diff --git a/index.php b/index.php
index 71a372f..08d7e48 100644
--- a/index.php
+++ b/index.php
@@ -29,7 +29,7 @@
         <p class="lead">Create backups from your WordPress website and restore files if necessary.</p>
         <form role="form" id="myform">
 			<input type="hidden" name="Submitform" value="1">
-			<p>Check which directories you like to exclude from the backup. ZIP files and the "mybackup" directory are always excluded!</p>
+			<p>Check which directories you like to exclude from the backup. ZIP files and the current directory (for example "mybackup") are always excluded!</p>
 			<div class="form-group">
 				<label class="checkbox-inline">
 				<input type="checkbox" name="exclude[]" value="cache" checked>
diff --git a/libs/Mysqldump.php b/libs/Mysqldump.php
deleted file mode 100644
index 06d3ff7..0000000
--- a/libs/Mysqldump.php
+++ /dev/null
@@ -1,2317 +0,0 @@
-<?php
-
-/**
- * PHP version of mysqldump cli that comes with MySQL.
- *
- * Tags: mysql mysqldump pdo php7 php5 database php sql hhvm mariadb mysql-backup.
- *
- * @category Library
- * @package  Ifsnop\Mysqldump
- * @author   Diego Torres <ifsnop@github.com>
- * @license  http://www.gnu.org/copyleft/gpl.html GNU General Public License
- * @link     https://github.com/ifsnop/mysqldump-php
- *
- */
-
-namespace Ifsnop\Mysqldump;
-
-use Exception;
-use PDO;
-use PDOException;
-
-/**
- * Class Mysqldump.
- *
- * @category Library
- * @author   Diego Torres <ifsnop@github.com>
- * @license  http://www.gnu.org/copyleft/gpl.html GNU General Public License
- * @link     https://github.com/ifsnop/mysqldump-php
- *
- */
-class Mysqldump
-{
-
-    // Same as mysqldump.
-    const MAXLINESIZE = 1000000;
-
-    // List of available compression methods as constants.
-    const GZIP  = 'Gzip';
-    const BZIP2 = 'Bzip2';
-    const NONE  = 'None';
-    const GZIPSTREAM = 'Gzipstream';
-
-    // List of available connection strings.
-    const UTF8    = 'utf8';
-    const UTF8MB4 = 'utf8mb4';
-
-    /**
-     * Database username.
-     * @var string
-     */
-    public $user;
-
-    /**
-     * Database password.
-     * @var string
-     */
-    public $pass;
-
-    /**
-     * Connection string for PDO.
-     * @var string
-     */
-    public $dsn;
-
-    /**
-     * Destination filename, defaults to stdout.
-     * @var string
-     */
-    public $fileName = 'php://stdout';
-
-    // Internal stuff.
-    private $tables = array();
-    private $views = array();
-    private $triggers = array();
-    private $procedures = array();
-    private $functions = array();
-    private $events = array();
-    private $dbHandler = null;
-    private $dbType = "";
-    private $compressManager;
-    private $typeAdapter;
-    private $dumpSettings = array();
-    private $pdoSettings = array();
-    private $version;
-    private $tableColumnTypes = array();
-    private $transformColumnValueCallable;
-
-    /**
-     * Database name, parsed from dsn.
-     * @var string
-     */
-    private $dbName;
-
-    /**
-     * Host name, parsed from dsn.
-     * @var string
-     */
-    private $host;
-
-    /**
-     * Dsn string parsed as an array.
-     * @var array
-     */
-    private $dsnArray = array();
-
-    /**
-     * Keyed on table name, with the value as the conditions.
-     * e.g. - 'users' => 'date_registered > NOW() - INTERVAL 6 MONTH'
-     *
-     * @var array
-     */
-    private $tableWheres = array();
-    private $tableLimits = array();
-
-    /**
-     * Constructor of Mysqldump. Note that in the case of an SQLite database
-     * connection, the filename must be in the $db parameter.
-     *
-     * @param string $dsn        PDO DSN connection string
-     * @param string $user       SQL account username
-     * @param string $pass       SQL account password
-     * @param array  $dumpSettings SQL database settings
-     * @param array  $pdoSettings  PDO configured attributes
-     */
-    public function __construct(
-        $dsn = '',
-        $user = '',
-        $pass = '',
-        $dumpSettings = array(),
-        $pdoSettings = array()
-    ) {
-        $dumpSettingsDefault = array(
-            'include-tables' => array(),
-            'exclude-tables' => array(),
-            'compress' => Mysqldump::NONE,
-            'init_commands' => array(),
-            'no-data' => array(),
-            'reset-auto-increment' => false,
-            'add-drop-database' => false,
-            'add-drop-table' => false,
-            'add-drop-trigger' => true,
-            'add-locks' => true,
-            'complete-insert' => false,
-            'databases' => false,
-            'default-character-set' => Mysqldump::UTF8,
-            'disable-keys' => true,
-            'extended-insert' => true,
-            'events' => false,
-            'hex-blob' => true, /* faster than escaped content */
-            'insert-ignore' => false,
-            'net_buffer_length' => self::MAXLINESIZE,
-            'no-autocommit' => true,
-            'no-create-info' => false,
-            'lock-tables' => true,
-            'routines' => false,
-            'single-transaction' => true,
-            'skip-triggers' => false,
-            'skip-tz-utc' => false,
-            'skip-comments' => false,
-            'skip-dump-date' => false,
-            'skip-definer' => false,
-            'where' => '',
-            /* deprecated */
-            'disable-foreign-keys-check' => true
-        );
-
-        $pdoSettingsDefault = array(
-            PDO::ATTR_PERSISTENT => true,
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-        );
-
-        $this->user = $user;
-        $this->pass = $pass;
-        $this->parseDsn($dsn);
-
-        // This drops MYSQL dependency, only use the constant if it's defined.
-        if ("mysql" === $this->dbType) {
-            $pdoSettingsDefault[PDO::MYSQL_ATTR_USE_BUFFERED_QUERY] = false;
-        }
-
-        $this->pdoSettings = self::array_replace_recursive($pdoSettingsDefault, $pdoSettings);
-        $this->dumpSettings = self::array_replace_recursive($dumpSettingsDefault, $dumpSettings);
-        $this->dumpSettings['init_commands'][] = "SET NAMES ".$this->dumpSettings['default-character-set'];
-
-        if (false === $this->dumpSettings['skip-tz-utc']) {
-            $this->dumpSettings['init_commands'][] = "SET TIME_ZONE='+00:00'";
-        }
-
-        $diff = array_diff(array_keys($this->dumpSettings), array_keys($dumpSettingsDefault));
-        if (count($diff) > 0) {
-            throw new Exception("Unexpected value in dumpSettings: (".implode(",", $diff).")");
-        }
-
-        if (!is_array($this->dumpSettings['include-tables']) ||
-            !is_array($this->dumpSettings['exclude-tables'])) {
-            throw new Exception("Include-tables and exclude-tables should be arrays");
-        }
-
-        // Dump the same views as tables, mimic mysqldump behaviour
-        $this->dumpSettings['include-views'] = $this->dumpSettings['include-tables'];
-
-        // Create a new compressManager to manage compressed output
-        $this->compressManager = CompressManagerFactory::create($this->dumpSettings['compress']);
-    }
-
-    /**
-     * Destructor of Mysqldump. Unsets dbHandlers and database objects.
-     */
-    public function __destruct()
-    {
-        $this->dbHandler = null;
-    }
-
-    /**
-     * Custom array_replace_recursive to be used if PHP < 5.3
-     * Replaces elements from passed arrays into the first array recursively.
-     *
-     * @param array $array1 The array in which elements are replaced
-     * @param array $array2 The array from which elements will be extracted
-     *
-     * @return array Returns an array, or NULL if an error occurs.
-     */
-    public static function array_replace_recursive($array1, $array2)
-    {
-        if (function_exists('array_replace_recursive')) {
-            return array_replace_recursive($array1, $array2);
-        }
-
-        foreach ($array2 as $key => $value) {
-            if (is_array($value)) {
-                $array1[$key] = self::array_replace_recursive($array1[$key], $value);
-            } else {
-                $array1[$key] = $value;
-            }
-        }
-        return $array1;
-    }
-
-    /**
-     * Keyed by table name, with the value as the conditions:
-     * e.g. 'users' => 'date_registered > NOW() - INTERVAL 6 MONTH AND deleted=0'
-     *
-     * @param array $tableWheres
-     */
-    public function setTableWheres(array $tableWheres)
-    {
-        $this->tableWheres = $tableWheres;
-    }
-
-    /**
-     * @param $tableName
-     *
-     * @return boolean|mixed
-     */
-    public function getTableWhere($tableName)
-    {
-        if (!empty($this->tableWheres[$tableName])) {
-            return $this->tableWheres[$tableName];
-        } elseif ($this->dumpSettings['where']) {
-            return $this->dumpSettings['where'];
-        }
-
-        return false;
-    }
-
-    /**
-     * Keyed by table name, with the value as the numeric limit:
-     * e.g. 'users' => 3000
-     *
-     * @param array $tableLimits
-     */
-    public function setTableLimits(array $tableLimits)
-    {
-        $this->tableLimits = $tableLimits;
-    }
-
-    /**
-     * Returns the LIMIT for the table.  Must be numeric to be returned.
-     * @param $tableName
-     * @return boolean
-     */
-    public function getTableLimit($tableName)
-    {
-        if (empty($this->tableLimits[$tableName])) {
-            return false;
-        }
-
-        $limit = $this->tableLimits[$tableName];
-        if (!is_numeric($limit)) {
-            return false;
-        }
-
-        return $limit;
-    }
-
-    /**
-     * Parse DSN string and extract dbname value
-     * Several examples of a DSN string
-     *   mysql:host=localhost;dbname=testdb
-     *   mysql:host=localhost;port=3307;dbname=testdb
-     *   mysql:unix_socket=/tmp/mysql.sock;dbname=testdb
-     *
-     * @param string $dsn dsn string to parse
-     * @return boolean
-     */
-    private function parseDsn($dsn)
-    {
-        if (empty($dsn) || (false === ($pos = strpos($dsn, ":")))) {
-            throw new Exception("Empty DSN string");
-        }
-
-        $this->dsn = $dsn;
-        $this->dbType = strtolower(substr($dsn, 0, $pos)); // always returns a string
-
-        if (empty($this->dbType)) {
-            throw new Exception("Missing database type from DSN string");
-        }
-
-        $dsn = substr($dsn, $pos + 1);
-
-        foreach (explode(";", $dsn) as $kvp) {
-            $kvpArr = explode("=", $kvp);
-            $this->dsnArray[strtolower($kvpArr[0])] = $kvpArr[1];
-        }
-
-        if (empty($this->dsnArray['host']) &&
-            empty($this->dsnArray['unix_socket'])) {
-            throw new Exception("Missing host from DSN string");
-        }
-        $this->host = (!empty($this->dsnArray['host'])) ?
-            $this->dsnArray['host'] : $this->dsnArray['unix_socket'];
-
-        if (empty($this->dsnArray['dbname'])) {
-            throw new Exception("Missing database name from DSN string");
-        }
-
-        $this->dbName = $this->dsnArray['dbname'];
-
-        return true;
-    }
-
-    /**
-     * Connect with PDO.
-     *
-     * @return null
-     */
-    private function connect()
-    {
-        // Connecting with PDO.
-        try {
-            switch ($this->dbType) {
-                case 'sqlite':
-                    $this->dbHandler = @new PDO("sqlite:".$this->dbName, null, null, $this->pdoSettings);
-                    break;
-                case 'mysql':
-                case 'pgsql':
-                case 'dblib':
-                    $this->dbHandler = @new PDO(
-                        $this->dsn,
-                        $this->user,
-                        $this->pass,
-                        $this->pdoSettings
-                    );
-                    // Execute init commands once connected
-                    foreach ($this->dumpSettings['init_commands'] as $stmt) {
-                        $this->dbHandler->exec($stmt);
-                    }
-                    // Store server version
-                    $this->version = $this->dbHandler->getAttribute(PDO::ATTR_SERVER_VERSION);
-                    break;
-                default:
-                    throw new Exception("Unsupported database type (".$this->dbType.")");
-            }
-        } catch (PDOException $e) {
-            throw new Exception(
-                "Connection to ".$this->dbType." failed with message: ".
-                $e->getMessage()
-            );
-        }
-
-        if (is_null($this->dbHandler)) {
-            throw new Exception("Connection to ".$this->dbType."failed");
-        }
-
-        $this->dbHandler->setAttribute(PDO::ATTR_ORACLE_NULLS, PDO::NULL_NATURAL);
-        $this->typeAdapter = TypeAdapterFactory::create($this->dbType, $this->dbHandler, $this->dumpSettings);
-    }
-
-    /**
-     * Primary function, triggers dumping.
-     *
-     * @param string $filename  Name of file to write sql dump to
-     * @return null
-     * @throws \Exception
-     */
-    public function start($filename = '')
-    {
-        // Output file can be redefined here
-        if (!empty($filename)) {
-            $this->fileName = $filename;
-        }
-
-        // Connect to database
-        $this->connect();
-
-        // Create output file
-        $this->compressManager->open($this->fileName);
-
-        // Write some basic info to output file
-        $this->compressManager->write($this->getDumpFileHeader());
-
-        // Store server settings and use sanner defaults to dump
-        $this->compressManager->write(
-            $this->typeAdapter->backup_parameters()
-        );
-
-        if ($this->dumpSettings['databases']) {
-            $this->compressManager->write(
-                $this->typeAdapter->getDatabaseHeader($this->dbName)
-            );
-            if ($this->dumpSettings['add-drop-database']) {
-                $this->compressManager->write(
-                    $this->typeAdapter->add_drop_database($this->dbName)
-                );
-            }
-        }
-
-        // Get table, view, trigger, procedures, functions and events structures from
-        // database.
-        $this->getDatabaseStructureTables();
-        $this->getDatabaseStructureViews();
-        $this->getDatabaseStructureTriggers();
-        $this->getDatabaseStructureProcedures();
-        $this->getDatabaseStructureFunctions();
-        $this->getDatabaseStructureEvents();
-
-        if ($this->dumpSettings['databases']) {
-            $this->compressManager->write(
-                $this->typeAdapter->databases($this->dbName)
-            );
-        }
-
-        // If there still are some tables/views in include-tables array,
-        // that means that some tables or views weren't found.
-        // Give proper error and exit.
-        // This check will be removed once include-tables supports regexps.
-        if (0 < count($this->dumpSettings['include-tables'])) {
-            $name = implode(",", $this->dumpSettings['include-tables']);
-            throw new Exception("Table (".$name.") not found in database");
-        }
-
-        $this->exportTables();
-        $this->exportTriggers();
-        $this->exportFunctions();
-        $this->exportProcedures();
-        $this->exportViews();
-        $this->exportEvents();
-
-        // Restore saved parameters.
-        $this->compressManager->write(
-            $this->typeAdapter->restore_parameters()
-        );
-        // Write some stats to output file.
-        $this->compressManager->write($this->getDumpFileFooter());
-        // Close output file.
-        $this->compressManager->close();
-
-        return;
-    }
-
-    /**
-     * Returns header for dump file.
-     *
-     * @return string
-     */
-    private function getDumpFileHeader()
-    {
-        $header = '';
-        if (!$this->dumpSettings['skip-comments']) {
-            // Some info about software, source and time
-            $header = "-- mysqldump-php https://github.com/ifsnop/mysqldump-php".PHP_EOL.
-                    "--".PHP_EOL.
-                    "-- Host: {$this->host}\tDatabase: {$this->dbName}".PHP_EOL.
-                    "-- ------------------------------------------------------".PHP_EOL;
-
-            if (!empty($this->version)) {
-                $header .= "-- Server version \t".$this->version.PHP_EOL;
-            }
-
-            if (!$this->dumpSettings['skip-dump-date']) {
-                $header .= "-- Date: ".date('r').PHP_EOL.PHP_EOL;
-            }
-        }
-        return $header;
-    }
-
-    /**
-     * Returns footer for dump file.
-     *
-     * @return string
-     */
-    private function getDumpFileFooter()
-    {
-        $footer = '';
-        if (!$this->dumpSettings['skip-comments']) {
-            $footer .= '-- Dump completed';
-            if (!$this->dumpSettings['skip-dump-date']) {
-                $footer .= ' on: '.date('r');
-            }
-            $footer .= PHP_EOL;
-        }
-
-        return $footer;
-    }
-
-    /**
-     * Reads table names from database.
-     * Fills $this->tables array so they will be dumped later.
-     *
-     * @return null
-     */
-    private function getDatabaseStructureTables()
-    {
-        // Listing all tables from database
-        if (empty($this->dumpSettings['include-tables'])) {
-            // include all tables for now, blacklisting happens later
-            foreach ($this->dbHandler->query($this->typeAdapter->show_tables($this->dbName)) as $row) {
-                array_push($this->tables, current($row));
-            }
-        } else {
-            // include only the tables mentioned in include-tables
-            foreach ($this->dbHandler->query($this->typeAdapter->show_tables($this->dbName)) as $row) {
-                if (in_array(current($row), $this->dumpSettings['include-tables'], true)) {
-                    array_push($this->tables, current($row));
-                    $elem = array_search(
-                        current($row),
-                        $this->dumpSettings['include-tables']
-                    );
-                    unset($this->dumpSettings['include-tables'][$elem]);
-                }
-            }
-        }
-        return;
-    }
-
-    /**
-     * Reads view names from database.
-     * Fills $this->tables array so they will be dumped later.
-     *
-     * @return null
-     */
-    private function getDatabaseStructureViews()
-    {
-        // Listing all views from database
-        if (empty($this->dumpSettings['include-views'])) {
-            // include all views for now, blacklisting happens later
-            foreach ($this->dbHandler->query($this->typeAdapter->show_views($this->dbName)) as $row) {
-                array_push($this->views, current($row));
-            }
-        } else {
-            // include only the tables mentioned in include-tables
-            foreach ($this->dbHandler->query($this->typeAdapter->show_views($this->dbName)) as $row) {
-                if (in_array(current($row), $this->dumpSettings['include-views'], true)) {
-                    array_push($this->views, current($row));
-                    $elem = array_search(
-                        current($row),
-                        $this->dumpSettings['include-views']
-                    );
-                    unset($this->dumpSettings['include-views'][$elem]);
-                }
-            }
-        }
-        return;
-    }
-
-    /**
-     * Reads trigger names from database.
-     * Fills $this->tables array so they will be dumped later.
-     *
-     * @return null
-     */
-    private function getDatabaseStructureTriggers()
-    {
-        // Listing all triggers from database
-        if (false === $this->dumpSettings['skip-triggers']) {
-            foreach ($this->dbHandler->query($this->typeAdapter->show_triggers($this->dbName)) as $row) {
-                array_push($this->triggers, $row['Trigger']);
-            }
-        }
-        return;
-    }
-
-    /**
-     * Reads procedure names from database.
-     * Fills $this->tables array so they will be dumped later.
-     *
-     * @return null
-     */
-    private function getDatabaseStructureProcedures()
-    {
-        // Listing all procedures from database
-        if ($this->dumpSettings['routines']) {
-            foreach ($this->dbHandler->query($this->typeAdapter->show_procedures($this->dbName)) as $row) {
-                array_push($this->procedures, $row['procedure_name']);
-            }
-        }
-        return;
-    }
-
-    /**
-     * Reads functions names from database.
-     * Fills $this->tables array so they will be dumped later.
-     *
-     * @return null
-     */
-    private function getDatabaseStructureFunctions()
-    {
-        // Listing all functions from database
-        if ($this->dumpSettings['routines']) {
-            foreach ($this->dbHandler->query($this->typeAdapter->show_functions($this->dbName)) as $row) {
-                array_push($this->functions, $row['function_name']);
-            }
-        }
-        return;
-    }
-
-    /**
-     * Reads event names from database.
-     * Fills $this->tables array so they will be dumped later.
-     *
-     * @return null
-     */
-    private function getDatabaseStructureEvents()
-    {
-        // Listing all events from database
-        if ($this->dumpSettings['events']) {
-            foreach ($this->dbHandler->query($this->typeAdapter->show_events($this->dbName)) as $row) {
-                array_push($this->events, $row['event_name']);
-            }
-        }
-        return;
-    }
-
-    /**
-     * Compare if $table name matches with a definition inside $arr
-     * @param $table string
-     * @param $arr array with strings or patterns
-     * @return boolean
-     */
-    private function matches($table, $arr)
-    {
-        $match = false;
-
-        foreach ($arr as $pattern) {
-            if ('/' != $pattern[0]) {
-                continue;
-            }
-            if (1 == preg_match($pattern, $table)) {
-                $match = true;
-            }
-        }
-
-        return in_array($table, $arr) || $match;
-    }
-
-    /**
-     * Exports all the tables selected from database
-     *
-     * @return null
-     */
-    private function exportTables()
-    {
-        // Exporting tables one by one
-        foreach ($this->tables as $table) {
-            if ($this->matches($table, $this->dumpSettings['exclude-tables'])) {
-                continue;
-            }
-            $this->getTableStructure($table);
-            if (false === $this->dumpSettings['no-data']) { // don't break compatibility with old trigger
-                $this->listValues($table);
-            } elseif (true === $this->dumpSettings['no-data']
-                 || $this->matches($table, $this->dumpSettings['no-data'])) {
-                continue;
-            } else {
-                $this->listValues($table);
-            }
-        }
-    }
-
-    /**
-     * Exports all the views found in database
-     *
-     * @return null
-     */
-    private function exportViews()
-    {
-        if (false === $this->dumpSettings['no-create-info']) {
-            // Exporting views one by one
-            foreach ($this->views as $view) {
-                if ($this->matches($view, $this->dumpSettings['exclude-tables'])) {
-                    continue;
-                }
-                $this->tableColumnTypes[$view] = $this->getTableColumnTypes($view);
-                $this->getViewStructureTable($view);
-            }
-            foreach ($this->views as $view) {
-                if ($this->matches($view, $this->dumpSettings['exclude-tables'])) {
-                    continue;
-                }
-                $this->getViewStructureView($view);
-            }
-        }
-    }
-
-    /**
-     * Exports all the triggers found in database
-     *
-     * @return null
-     */
-    private function exportTriggers()
-    {
-        // Exporting triggers one by one
-        foreach ($this->triggers as $trigger) {
-            $this->getTriggerStructure($trigger);
-        }
-    }
-
-    /**
-     * Exports all the procedures found in database
-     *
-     * @return null
-     */
-    private function exportProcedures()
-    {
-        // Exporting triggers one by one
-        foreach ($this->procedures as $procedure) {
-            $this->getProcedureStructure($procedure);
-        }
-    }
-
-    /**
-     * Exports all the functions found in database
-     *
-     * @return null
-     */
-    private function exportFunctions()
-    {
-        // Exporting triggers one by one
-        foreach ($this->functions as $function) {
-            $this->getFunctionStructure($function);
-        }
-    }
-
-    /**
-     * Exports all the events found in database
-     *
-     * @return null
-     */
-    private function exportEvents()
-    {
-        // Exporting triggers one by one
-        foreach ($this->events as $event) {
-            $this->getEventStructure($event);
-        }
-    }
-
-    /**
-     * Table structure extractor
-     *
-     * @todo move specific mysql code to typeAdapter
-     * @param string $tableName  Name of table to export
-     * @return null
-     */
-    private function getTableStructure($tableName)
-    {
-        if (!$this->dumpSettings['no-create-info']) {
-            $ret = '';
-            if (!$this->dumpSettings['skip-comments']) {
-                $ret = "--".PHP_EOL.
-                    "-- Table structure for table `$tableName`".PHP_EOL.
-                    "--".PHP_EOL.PHP_EOL;
-            }
-            $stmt = $this->typeAdapter->show_create_table($tableName);
-            foreach ($this->dbHandler->query($stmt) as $r) {
-                $this->compressManager->write($ret);
-                if ($this->dumpSettings['add-drop-table']) {
-                    $this->compressManager->write(
-                        $this->typeAdapter->drop_table($tableName)
-                    );
-                }
-                $this->compressManager->write(
-                    $this->typeAdapter->create_table($r)
-                );
-                break;
-            }
-        }
-        $this->tableColumnTypes[$tableName] = $this->getTableColumnTypes($tableName);
-        return;
-    }
-
-    /**
-     * Store column types to create data dumps and for Stand-In tables
-     *
-     * @param string $tableName  Name of table to export
-     * @return array type column types detailed
-     */
-
-    private function getTableColumnTypes($tableName)
-    {
-        $columnTypes = array();
-        $columns = $this->dbHandler->query(
-            $this->typeAdapter->show_columns($tableName)
-        );
-        $columns->setFetchMode(PDO::FETCH_ASSOC);
-
-        foreach ($columns as $key => $col) {
-            $types = $this->typeAdapter->parseColumnType($col);
-            $columnTypes[$col['Field']] = array(
-                'is_numeric'=> $types['is_numeric'],
-                'is_blob' => $types['is_blob'],
-                'type' => $types['type'],
-                'type_sql' => $col['Type'],
-                'is_virtual' => $types['is_virtual']
-            );
-        }
-
-        return $columnTypes;
-    }
-
-    /**
-     * View structure extractor, create table (avoids cyclic references)
-     *
-     * @todo move mysql specific code to typeAdapter
-     * @param string $viewName  Name of view to export
-     * @return null
-     */
-    private function getViewStructureTable($viewName)
-    {
-        if (!$this->dumpSettings['skip-comments']) {
-            $ret = "--".PHP_EOL.
-                "-- Stand-In structure for view `${viewName}`".PHP_EOL.
-                "--".PHP_EOL.PHP_EOL;
-            $this->compressManager->write($ret);
-        }
-        $stmt = $this->typeAdapter->show_create_view($viewName);
-
-        // create views as tables, to resolve dependencies
-        foreach ($this->dbHandler->query($stmt) as $r) {
-            if ($this->dumpSettings['add-drop-table']) {
-                $this->compressManager->write(
-                    $this->typeAdapter->drop_view($viewName)
-                );
-            }
-
-            $this->compressManager->write(
-                $this->createStandInTable($viewName)
-            );
-            break;
-        }
-    }
-
-    /**
-     * Write a create table statement for the table Stand-In, show create
-     * table would return a create algorithm when used on a view
-     *
-     * @param string $viewName  Name of view to export
-     * @return string create statement
-     */
-    public function createStandInTable($viewName)
-    {
-        $ret = array();
-        foreach ($this->tableColumnTypes[$viewName] as $k => $v) {
-            $ret[] = "`${k}` ${v['type_sql']}";
-        }
-        $ret = implode(PHP_EOL.",", $ret);
-
-        $ret = "CREATE TABLE IF NOT EXISTS `$viewName` (".
-            PHP_EOL.$ret.PHP_EOL.");".PHP_EOL;
-
-        return $ret;
-    }
-
-    /**
-     * View structure extractor, create view
-     *
-     * @todo move mysql specific code to typeAdapter
-     * @param string $viewName  Name of view to export
-     * @return null
-     */
-    private function getViewStructureView($viewName)
-    {
-        if (!$this->dumpSettings['skip-comments']) {
-            $ret = "--".PHP_EOL.
-                "-- View structure for view `${viewName}`".PHP_EOL.
-                "--".PHP_EOL.PHP_EOL;
-            $this->compressManager->write($ret);
-        }
-        $stmt = $this->typeAdapter->show_create_view($viewName);
-
-        // create views, to resolve dependencies
-        // replacing tables with views
-        foreach ($this->dbHandler->query($stmt) as $r) {
-            // because we must replace table with view, we should delete it
-            $this->compressManager->write(
-                $this->typeAdapter->drop_view($viewName)
-            );
-            $this->compressManager->write(
-                $this->typeAdapter->create_view($r)
-            );
-            break;
-        }
-    }
-
-    /**
-     * Trigger structure extractor
-     *
-     * @param string $triggerName  Name of trigger to export
-     * @return null
-     */
-    private function getTriggerStructure($triggerName)
-    {
-        $stmt = $this->typeAdapter->show_create_trigger($triggerName);
-        foreach ($this->dbHandler->query($stmt) as $r) {
-            if ($this->dumpSettings['add-drop-trigger']) {
-                $this->compressManager->write(
-                    $this->typeAdapter->add_drop_trigger($triggerName)
-                );
-            }
-            $this->compressManager->write(
-                $this->typeAdapter->create_trigger($r)
-            );
-            return;
-        }
-    }
-
-    /**
-     * Procedure structure extractor
-     *
-     * @param string $procedureName  Name of procedure to export
-     * @return null
-     */
-    private function getProcedureStructure($procedureName)
-    {
-        if (!$this->dumpSettings['skip-comments']) {
-            $ret = "--".PHP_EOL.
-                "-- Dumping routines for database '".$this->dbName."'".PHP_EOL.
-                "--".PHP_EOL.PHP_EOL;
-            $this->compressManager->write($ret);
-        }
-        $stmt = $this->typeAdapter->show_create_procedure($procedureName);
-        foreach ($this->dbHandler->query($stmt) as $r) {
-            $this->compressManager->write(
-                $this->typeAdapter->create_procedure($r)
-            );
-            return;
-        }
-    }
-
-    /**
-     * Function structure extractor
-     *
-     * @param string $functionName  Name of function to export
-     * @return null
-     */
-    private function getFunctionStructure($functionName)
-    {
-        if (!$this->dumpSettings['skip-comments']) {
-            $ret = "--".PHP_EOL.
-                "-- Dumping routines for database '".$this->dbName."'".PHP_EOL.
-                "--".PHP_EOL.PHP_EOL;
-            $this->compressManager->write($ret);
-        }
-        $stmt = $this->typeAdapter->show_create_function($functionName);
-        foreach ($this->dbHandler->query($stmt) as $r) {
-            $this->compressManager->write(
-                $this->typeAdapter->create_function($r)
-            );
-            return;
-        }
-    }
-
-    /**
-     * Event structure extractor
-     *
-     * @param string $eventName  Name of event to export
-     * @return null
-     */
-    private function getEventStructure($eventName)
-    {
-        if (!$this->dumpSettings['skip-comments']) {
-            $ret = "--".PHP_EOL.
-                "-- Dumping events for database '".$this->dbName."'".PHP_EOL.
-                "--".PHP_EOL.PHP_EOL;
-            $this->compressManager->write($ret);
-        }
-        $stmt = $this->typeAdapter->show_create_event($eventName);
-        foreach ($this->dbHandler->query($stmt) as $r) {
-            $this->compressManager->write(
-                $this->typeAdapter->create_event($r)
-            );
-            return;
-        }
-    }
-
-    /**
-     * Prepare values for output
-     *
-     * @param string $tableName Name of table which contains rows
-     * @param array $row Associative array of column names and values to be
-     *   quoted
-     *
-     * @return array
-     */
-    private function prepareColumnValues($tableName, $row)
-    {
-        $ret = array();
-        $columnTypes = $this->tableColumnTypes[$tableName];
-        foreach ($row as $colName => $colValue) {
-            $colValue = $this->hookTransformColumnValue($tableName, $colName, $colValue, $row);
-            $ret[] = $this->escape($colValue, $columnTypes[$colName]);
-        }
-
-        return $ret;
-    }
-
-    /**
-     * Escape values with quotes when needed
-     *
-     * @param string $tableName Name of table which contains rows
-     * @param array $row Associative array of column names and values to be quoted
-     *
-     * @return string
-     */
-    private function escape($colValue, $colType)
-    {
-        if (is_null($colValue)) {
-            return "NULL";
-        } elseif ($this->dumpSettings['hex-blob'] && $colType['is_blob']) {
-            if ($colType['type'] == 'bit' || !empty($colValue)) {
-                return "0x${colValue}";
-            } else {
-                return "''";
-            }
-        } elseif ($colType['is_numeric']) {
-            return $colValue;
-        }
-
-        return $this->dbHandler->quote($colValue);
-    }
-
-    /**
-     * Set a callable that will will be used to transform column values.
-     *
-     * @param callable $callable
-     *
-     * @return void
-     */
-    public function setTransformColumnValueHook($callable)
-    {
-        $this->transformColumnValueCallable = $callable;
-    }
-
-    /**
-     * Give extending classes an opportunity to transform column values
-     *
-     * @param string $tableName Name of table which contains rows
-     * @param string $colName Name of the column in question
-     * @param string $colValue Value of the column in question
-     *
-     * @return string
-     */
-    protected function hookTransformColumnValue($tableName, $colName, $colValue, $row)
-    {
-        if (!$this->transformColumnValueCallable) {
-            return $colValue;
-        }
-
-        return call_user_func_array($this->transformColumnValueCallable, array(
-            $tableName,
-            $colName,
-            $colValue,
-            $row
-        ));
-    }
-
-    /**
-     * Table rows extractor
-     *
-     * @param string $tableName  Name of table to export
-     *
-     * @return null
-     */
-    private function listValues($tableName)
-    {
-        $this->prepareListValues($tableName);
-
-        $onlyOnce = true;
-        $lineSize = 0;
-
-        // colStmt is used to form a query to obtain row values
-        $colStmt = $this->getColumnStmt($tableName);
-        // colNames is used to get the name of the columns when using complete-insert
-        if ($this->dumpSettings['complete-insert']) {
-            $colNames = $this->getColumnNames($tableName);
-        }
-
-        $stmt = "SELECT ".implode(",", $colStmt)." FROM `$tableName`";
-
-        // Table specific conditions override the default 'where'
-        $condition = $this->getTableWhere($tableName);
-
-        if ($condition) {
-            $stmt .= " WHERE {$condition}";
-        }
-
-        $limit = $this->getTableLimit($tableName);
-
-        if ($limit) {
-            $stmt .= " LIMIT {$limit}";
-        }
-
-        $resultSet = $this->dbHandler->query($stmt);
-        $resultSet->setFetchMode(PDO::FETCH_ASSOC);
-
-        $ignore = $this->dumpSettings['insert-ignore'] ? '  IGNORE' : '';
-
-        $count = 0;
-        foreach ($resultSet as $row) {
-            $count++;
-            $vals = $this->prepareColumnValues($tableName, $row);
-            if ($onlyOnce || !$this->dumpSettings['extended-insert']) {
-                if ($this->dumpSettings['complete-insert']) {
-                    $lineSize += $this->compressManager->write(
-                        "INSERT$ignore INTO `$tableName` (".
-                        implode(", ", $colNames).
-                        ") VALUES (".implode(",", $vals).")"
-                    );
-                } else {
-                    $lineSize += $this->compressManager->write(
-                        "INSERT$ignore INTO `$tableName` VALUES (".implode(",", $vals).")"
-                    );
-                }
-                $onlyOnce = false;
-            } else {
-                $lineSize += $this->compressManager->write(",(".implode(",", $vals).")");
-            }
-            if (($lineSize > $this->dumpSettings['net_buffer_length']) ||
-                    !$this->dumpSettings['extended-insert']) {
-                $onlyOnce = true;
-                $lineSize = $this->compressManager->write(";".PHP_EOL);
-            }
-        }
-        $resultSet->closeCursor();
-
-        if (!$onlyOnce) {
-            $this->compressManager->write(";".PHP_EOL);
-        }
-
-        $this->endListValues($tableName, $count);
-    }
-
-    /**
-     * Table rows extractor, append information prior to dump
-     *
-     * @param string $tableName  Name of table to export
-     *
-     * @return null
-     */
-    public function prepareListValues($tableName)
-    {
-        if (!$this->dumpSettings['skip-comments']) {
-            $this->compressManager->write(
-                "--".PHP_EOL.
-                "-- Dumping data for table `$tableName`".PHP_EOL.
-                "--".PHP_EOL.PHP_EOL
-            );
-        }
-
-        if ($this->dumpSettings['single-transaction']) {
-            $this->dbHandler->exec($this->typeAdapter->setup_transaction());
-            $this->dbHandler->exec($this->typeAdapter->start_transaction());
-        }
-
-        if ($this->dumpSettings['lock-tables'] && !$this->dumpSettings['single-transaction']) {
-            $this->typeAdapter->lock_table($tableName);
-        }
-
-        if ($this->dumpSettings['add-locks']) {
-            $this->compressManager->write(
-                $this->typeAdapter->start_add_lock_table($tableName)
-            );
-        }
-
-        if ($this->dumpSettings['disable-keys']) {
-            $this->compressManager->write(
-                $this->typeAdapter->start_add_disable_keys($tableName)
-            );
-        }
-
-        // Disable autocommit for faster reload
-        if ($this->dumpSettings['no-autocommit']) {
-            $this->compressManager->write(
-                $this->typeAdapter->start_disable_autocommit()
-            );
-        }
-
-        return;
-    }
-
-    /**
-     * Table rows extractor, close locks and commits after dump
-     *
-     * @param string $tableName Name of table to export.
-     * @param integer    $count     Number of rows inserted.
-     *
-     * @return void
-     */
-    public function endListValues($tableName, $count = 0)
-    {
-        if ($this->dumpSettings['disable-keys']) {
-            $this->compressManager->write(
-                $this->typeAdapter->end_add_disable_keys($tableName)
-            );
-        }
-
-        if ($this->dumpSettings['add-locks']) {
-            $this->compressManager->write(
-                $this->typeAdapter->end_add_lock_table($tableName)
-            );
-        }
-
-        if ($this->dumpSettings['single-transaction']) {
-            $this->dbHandler->exec($this->typeAdapter->commit_transaction());
-        }
-
-        if ($this->dumpSettings['lock-tables'] && !$this->dumpSettings['single-transaction']) {
-            $this->typeAdapter->unlock_table($tableName);
-        }
-
-        // Commit to enable autocommit
-        if ($this->dumpSettings['no-autocommit']) {
-            $this->compressManager->write(
-                $this->typeAdapter->end_disable_autocommit()
-            );
-        }
-
-        $this->compressManager->write(PHP_EOL);
-
-        if (!$this->dumpSettings['skip-comments']) {
-            $this->compressManager->write(
-                "-- Dumped table `".$tableName."` with $count row(s)".PHP_EOL.
-                '--'.PHP_EOL.PHP_EOL
-            );
-        }
-
-        return;
-    }
-
-    /**
-     * Build SQL List of all columns on current table which will be used for selecting
-     *
-     * @param string $tableName  Name of table to get columns
-     *
-     * @return array SQL sentence with columns for select
-     */
-    public function getColumnStmt($tableName)
-    {
-        $colStmt = array();
-        foreach ($this->tableColumnTypes[$tableName] as $colName => $colType) {
-            if ($colType['type'] == 'bit' && $this->dumpSettings['hex-blob']) {
-                $colStmt[] = "LPAD(HEX(`${colName}`),2,'0') AS `${colName}`";
-            } elseif ($colType['is_blob'] && $this->dumpSettings['hex-blob']) {
-                $colStmt[] = "HEX(`${colName}`) AS `${colName}`";
-            } elseif ($colType['is_virtual']) {
-                $this->dumpSettings['complete-insert'] = true;
-                continue;
-            } else {
-                $colStmt[] = "`${colName}`";
-            }
-        }
-
-        return $colStmt;
-    }
-
-    /**
-     * Build SQL List of all columns on current table which will be used for inserting
-     *
-     * @param string $tableName  Name of table to get columns
-     *
-     * @return array columns for sql sentence for insert
-     */
-    public function getColumnNames($tableName)
-    {
-        $colNames = array();
-        foreach ($this->tableColumnTypes[$tableName] as $colName => $colType) {
-            if ($colType['is_virtual']) {
-                $this->dumpSettings['complete-insert'] = true;
-                continue;
-            } else {
-                $colNames[] = "`${colName}`";
-            }
-        }
-        return $colNames;
-    }
-}
-
-/**
- * Enum with all available compression methods
- *
- */
-abstract class CompressMethod
-{
-    public static $enums = array(
-        Mysqldump::NONE,
-        Mysqldump::GZIP,
-        Mysqldump::BZIP2,
-        Mysqldump::GZIPSTREAM,
-    );
-
-    /**
-     * @param string $c
-     * @return boolean
-     */
-    public static function isValid($c)
-    {
-        return in_array($c, self::$enums);
-    }
-}
-
-abstract class CompressManagerFactory
-{
-    /**
-     * @param string $c
-     * @return CompressBzip2|CompressGzip|CompressNone
-     */
-    public static function create($c)
-    {
-        $c = ucfirst(strtolower($c));
-        if (!CompressMethod::isValid($c)) {
-            throw new Exception("Compression method ($c) is not defined yet");
-        }
-
-        $method = __NAMESPACE__."\\"."Compress".$c;
-
-        return new $method;
-    }
-}
-
-class CompressBzip2 extends CompressManagerFactory
-{
-    private $fileHandler = null;
-
-    public function __construct()
-    {
-        if (!function_exists("bzopen")) {
-            throw new Exception("Compression is enabled, but bzip2 lib is not installed or configured properly");
-        }
-    }
-
-    /**
-     * @param string $filename
-     */
-    public function open($filename)
-    {
-        $this->fileHandler = bzopen($filename, "w");
-        if (false === $this->fileHandler) {
-            throw new Exception("Output file is not writable");
-        }
-
-        return true;
-    }
-
-    public function write($str)
-    {
-        $bytesWritten = bzwrite($this->fileHandler, $str);
-        if (false === $bytesWritten) {
-            throw new Exception("Writting to file failed! Probably, there is no more free space left?");
-        }
-        return $bytesWritten;
-    }
-
-    public function close()
-    {
-        return bzclose($this->fileHandler);
-    }
-}
-
-class CompressGzip extends CompressManagerFactory
-{
-    private $fileHandler = null;
-
-    public function __construct()
-    {
-        if (!function_exists("gzopen")) {
-            throw new Exception("Compression is enabled, but gzip lib is not installed or configured properly");
-        }
-    }
-
-    /**
-     * @param string $filename
-     */
-    public function open($filename)
-    {
-        $this->fileHandler = gzopen($filename, "wb");
-        if (false === $this->fileHandler) {
-            throw new Exception("Output file is not writable");
-        }
-
-        return true;
-    }
-
-    public function write($str)
-    {
-        $bytesWritten = gzwrite($this->fileHandler, $str);
-        if (false === $bytesWritten) {
-            throw new Exception("Writting to file failed! Probably, there is no more free space left?");
-        }
-        return $bytesWritten;
-    }
-
-    public function close()
-    {
-        return gzclose($this->fileHandler);
-    }
-}
-
-class CompressNone extends CompressManagerFactory
-{
-    private $fileHandler = null;
-
-    /**
-     * @param string $filename
-     */
-    public function open($filename)
-    {
-        $this->fileHandler = fopen($filename, "wb");
-        if (false === $this->fileHandler) {
-            throw new Exception("Output file is not writable");
-        }
-
-        return true;
-    }
-
-    public function write($str)
-    {
-        $bytesWritten = fwrite($this->fileHandler, $str);
-        if (false === $bytesWritten) {
-            throw new Exception("Writting to file failed! Probably, there is no more free space left?");
-        }
-        return $bytesWritten;
-    }
-
-    public function close()
-    {
-        return fclose($this->fileHandler);
-    }
-}
-
-class CompressGzipstream extends CompressManagerFactory
-{
-  private $fileHandler = null;
-
-  private $compressContext;
-
-  /**
-   * @param string $filename
-   */
-  public function open($filename)
-  {
-    $this->fileHandler = fopen($filename, "wb");
-    if (false === $this->fileHandler) {
-      throw new Exception("Output file is not writable");
-    }
-
-    $this->compressContext = deflate_init(ZLIB_ENCODING_GZIP, array('level' => 9));
-    return true;
-  }
-
-  public function write($str)
-  {
-
-    $bytesWritten = fwrite($this->fileHandler, deflate_add($this->compressContext, $str, ZLIB_NO_FLUSH));
-    if (false === $bytesWritten) {
-      throw new Exception("Writting to file failed! Probably, there is no more free space left?");
-    }
-    return $bytesWritten;
-  }
-
-  public function close()
-  {
-    fwrite($this->fileHandler, deflate_add($this->compressContext, '', ZLIB_FINISH));
-    return fclose($this->fileHandler);
-  }
-}
-
-/**
- * Enum with all available TypeAdapter implementations
- *
- */
-abstract class TypeAdapter
-{
-    public static $enums = array(
-        "Sqlite",
-        "Mysql"
-    );
-
-    /**
-     * @param string $c
-     * @return boolean
-     */
-    public static function isValid($c)
-    {
-        return in_array($c, self::$enums);
-    }
-}
-
-/**
- * TypeAdapter Factory
- *
- */
-abstract class TypeAdapterFactory
-{
-    protected $dbHandler = null;
-    protected $dumpSettings = array();
-
-    /**
-     * @param string $c Type of database factory to create (Mysql, Sqlite,...)
-     * @param PDO $dbHandler
-     */
-    public static function create($c, $dbHandler = null, $dumpSettings = array())
-    {
-        $c = ucfirst(strtolower($c));
-        if (!TypeAdapter::isValid($c)) {
-            throw new Exception("Database type support for ($c) not yet available");
-        }
-        $method = __NAMESPACE__."\\"."TypeAdapter".$c;
-        return new $method($dbHandler, $dumpSettings);
-    }
-
-    public function __construct($dbHandler = null, $dumpSettings = array())
-    {
-        $this->dbHandler = $dbHandler;
-        $this->dumpSettings = $dumpSettings;
-    }
-
-    /**
-     * function databases Add sql to create and use database
-     * @todo make it do something with sqlite
-     */
-    public function databases()
-    {
-        return "";
-    }
-
-    public function show_create_table($tableName)
-    {
-        return "SELECT tbl_name as 'Table', sql as 'Create Table' ".
-            "FROM sqlite_master ".
-            "WHERE type='table' AND tbl_name='$tableName'";
-    }
-
-    /**
-     * function create_table Get table creation code from database
-     * @todo make it do something with sqlite
-     */
-    public function create_table($row)
-    {
-        return "";
-    }
-
-    public function show_create_view($viewName)
-    {
-        return "SELECT tbl_name as 'View', sql as 'Create View' ".
-            "FROM sqlite_master ".
-            "WHERE type='view' AND tbl_name='$viewName'";
-    }
-
-    /**
-     * function create_view Get view creation code from database
-     * @todo make it do something with sqlite
-     */
-    public function create_view($row)
-    {
-        return "";
-    }
-
-    /**
-     * function show_create_trigger Get trigger creation code from database
-     * @todo make it do something with sqlite
-     */
-    public function show_create_trigger($triggerName)
-    {
-        return "";
-    }
-
-    /**
-     * function create_trigger Modify trigger code, add delimiters, etc
-     * @todo make it do something with sqlite
-     */
-    public function create_trigger($triggerName)
-    {
-        return "";
-    }
-
-    /**
-     * function create_procedure Modify procedure code, add delimiters, etc
-     * @todo make it do something with sqlite
-     */
-    public function create_procedure($procedureName)
-    {
-        return "";
-    }
-
-    /**
-     * function create_function Modify function code, add delimiters, etc
-     * @todo make it do something with sqlite
-     */
-    public function create_function($functionName)
-    {
-        return "";
-    }
-
-    public function show_tables()
-    {
-        return "SELECT tbl_name FROM sqlite_master WHERE type='table'";
-    }
-
-    public function show_views()
-    {
-        return "SELECT tbl_name FROM sqlite_master WHERE type='view'";
-    }
-
-    public function show_triggers()
-    {
-        return "SELECT name FROM sqlite_master WHERE type='trigger'";
-    }
-
-    public function show_columns()
-    {
-        if (func_num_args() != 1) {
-            return "";
-        }
-
-        $args = func_get_args();
-
-        return "pragma table_info(${args[0]})";
-    }
-
-    public function show_procedures()
-    {
-        return "";
-    }
-
-    public function show_functions()
-    {
-        return "";
-    }
-
-    public function show_events()
-    {
-        return "";
-    }
-
-    public function setup_transaction()
-    {
-        return "";
-    }
-
-    public function start_transaction()
-    {
-        return "BEGIN EXCLUSIVE";
-    }
-
-    public function commit_transaction()
-    {
-        return "COMMIT";
-    }
-
-    public function lock_table()
-    {
-        return "";
-    }
-
-    public function unlock_table()
-    {
-        return "";
-    }
-
-    public function start_add_lock_table()
-    {
-        return PHP_EOL;
-    }
-
-    public function end_add_lock_table()
-    {
-        return PHP_EOL;
-    }
-
-    public function start_add_disable_keys()
-    {
-        return PHP_EOL;
-    }
-
-    public function end_add_disable_keys()
-    {
-        return PHP_EOL;
-    }
-
-    public function start_disable_foreign_keys_check()
-    {
-        return PHP_EOL;
-    }
-
-    public function end_disable_foreign_keys_check()
-    {
-        return PHP_EOL;
-    }
-
-    public function add_drop_database()
-    {
-        return PHP_EOL;
-    }
-
-    public function add_drop_trigger()
-    {
-        return PHP_EOL;
-    }
-
-    public function drop_table()
-    {
-        return PHP_EOL;
-    }
-
-    public function drop_view()
-    {
-        return PHP_EOL;
-    }
-
-    /**
-     * Decode column metadata and fill info structure.
-     * type, is_numeric and is_blob will always be available.
-     *
-     * @param array $colType Array returned from "SHOW COLUMNS FROM tableName"
-     * @return array
-     */
-    public function parseColumnType($colType)
-    {
-        return array();
-    }
-
-    public function backup_parameters()
-    {
-        return PHP_EOL;
-    }
-
-    public function restore_parameters()
-    {
-        return PHP_EOL;
-    }
-}
-
-class TypeAdapterPgsql extends TypeAdapterFactory
-{
-}
-
-class TypeAdapterDblib extends TypeAdapterFactory
-{
-}
-
-class TypeAdapterSqlite extends TypeAdapterFactory
-{
-}
-
-class TypeAdapterMysql extends TypeAdapterFactory
-{
-    const DEFINER_RE = 'DEFINER=`(?:[^`]|``)*`@`(?:[^`]|``)*`';
-
-
-    // Numerical Mysql types
-    public $mysqlTypes = array(
-        'numerical' => array(
-            'bit',
-            'tinyint',
-            'smallint',
-            'mediumint',
-            'int',
-            'integer',
-            'bigint',
-            'real',
-            'double',
-            'float',
-            'decimal',
-            'numeric'
-        ),
-        'blob' => array(
-            'tinyblob',
-            'blob',
-            'mediumblob',
-            'longblob',
-            'binary',
-            'varbinary',
-            'bit',
-            'geometry', /* http://bugs.mysql.com/bug.php?id=43544 */
-            'point',
-            'linestring',
-            'polygon',
-            'multipoint',
-            'multilinestring',
-            'multipolygon',
-            'geometrycollection',
-        )
-    );
-
-    public function databases()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        $databaseName = $args[0];
-
-        $resultSet = $this->dbHandler->query("SHOW VARIABLES LIKE 'character_set_database';");
-        $characterSet = $resultSet->fetchColumn(1);
-        $resultSet->closeCursor();
-
-        $resultSet = $this->dbHandler->query("SHOW VARIABLES LIKE 'collation_database';");
-        $collationDb = $resultSet->fetchColumn(1);
-        $resultSet->closeCursor();
-        $ret = "";
-
-        $ret .= "CREATE DATABASE /*!32312 IF NOT EXISTS*/ `${databaseName}`".
-            " /*!40100 DEFAULT CHARACTER SET ${characterSet} ".
-            " COLLATE ${collationDb} */;".PHP_EOL.PHP_EOL.
-            "USE `${databaseName}`;".PHP_EOL.PHP_EOL;
-
-        return $ret;
-    }
-
-    public function show_create_table($tableName)
-    {
-        return "SHOW CREATE TABLE `$tableName`";
-    }
-
-    public function show_create_view($viewName)
-    {
-        return "SHOW CREATE VIEW `$viewName`";
-    }
-
-    public function show_create_trigger($triggerName)
-    {
-        return "SHOW CREATE TRIGGER `$triggerName`";
-    }
-
-    public function show_create_procedure($procedureName)
-    {
-        return "SHOW CREATE PROCEDURE `$procedureName`";
-    }
-
-    public function show_create_function($functionName)
-    {
-        return "SHOW CREATE FUNCTION `$functionName`";
-    }
-
-    public function show_create_event($eventName)
-    {
-        return "SHOW CREATE EVENT `$eventName`";
-    }
-
-    public function create_table($row)
-    {
-        if (!isset($row['Create Table'])) {
-            throw new Exception("Error getting table code, unknown output");
-        }
-
-        $createTable = $row['Create Table'];
-        if ($this->dumpSettings['reset-auto-increment']) {
-            $match = "/AUTO_INCREMENT=[0-9]+/s";
-            $replace = "";
-            $createTable = preg_replace($match, $replace, $createTable);
-        }
-
-        $ret = "/*!40101 SET @saved_cs_client     = @@character_set_client */;".PHP_EOL.
-            "/*!40101 SET character_set_client = ".$this->dumpSettings['default-character-set']." */;".PHP_EOL.
-            $createTable.";".PHP_EOL.
-            "/*!40101 SET character_set_client = @saved_cs_client */;".PHP_EOL.
-            PHP_EOL;
-        return $ret;
-    }
-
-    public function create_view($row)
-    {
-        $ret = "";
-        if (!isset($row['Create View'])) {
-            throw new Exception("Error getting view structure, unknown output");
-        }
-
-        $viewStmt = $row['Create View'];
-
-        $definerStr = $this->dumpSettings['skip-definer'] ? '' : '/*!50013 \2 */'.PHP_EOL;
-
-        if ($viewStmtReplaced = preg_replace(
-            '/^(CREATE(?:\s+ALGORITHM=(?:UNDEFINED|MERGE|TEMPTABLE))?)\s+('
-            .self::DEFINER_RE.'(?:\s+SQL SECURITY DEFINER|INVOKER)?)?\s+(VIEW .+)$/',
-            '/*!50001 \1 */'.PHP_EOL.$definerStr.'/*!50001 \3 */',
-            $viewStmt,
-            1
-        )) {
-            $viewStmt = $viewStmtReplaced;
-        };
-
-        $ret .= $viewStmt.';'.PHP_EOL.PHP_EOL;
-        return $ret;
-    }
-
-    public function create_trigger($row)
-    {
-        $ret = "";
-        if (!isset($row['SQL Original Statement'])) {
-            throw new Exception("Error getting trigger code, unknown output");
-        }
-
-        $triggerStmt = $row['SQL Original Statement'];
-        $definerStr = $this->dumpSettings['skip-definer'] ? '' : '/*!50017 \2*/ ';
-        if ($triggerStmtReplaced = preg_replace(
-            '/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(TRIGGER\s.*)$/s',
-            '/*!50003 \1*/ '.$definerStr.'/*!50003 \3 */',
-            $triggerStmt,
-            1
-        )) {
-            $triggerStmt = $triggerStmtReplaced;
-        }
-
-        $ret .= "DELIMITER ;;".PHP_EOL.
-            $triggerStmt.";;".PHP_EOL.
-            "DELIMITER ;".PHP_EOL.PHP_EOL;
-        return $ret;
-    }
-
-    public function create_procedure($row)
-    {
-        $ret = "";
-        if (!isset($row['Create Procedure'])) {
-            throw new Exception("Error getting procedure code, unknown output. ".
-                "Please check 'https://bugs.mysql.com/bug.php?id=14564'");
-        }
-        $procedureStmt = $row['Create Procedure'];
-        if ( $this->dumpSettings['skip-definer'] ) {
-            if ($procedureStmtReplaced = preg_replace(
-                '/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(PROCEDURE\s.*)$/s',
-                '\1 \3',
-                $procedureStmt,
-                1
-            )) {
-                $procedureStmt = $procedureStmtReplaced;
-            }
-        }
-
-        $ret .= "/*!50003 DROP PROCEDURE IF EXISTS `".
-            $row['Procedure']."` */;".PHP_EOL.
-            "/*!40101 SET @saved_cs_client     = @@character_set_client */;".PHP_EOL.
-            "/*!40101 SET character_set_client = ".$this->dumpSettings['default-character-set']." */;".PHP_EOL.
-            "DELIMITER ;;".PHP_EOL.
-            $procedureStmt." ;;".PHP_EOL.
-            "DELIMITER ;".PHP_EOL.
-            "/*!40101 SET character_set_client = @saved_cs_client */;".PHP_EOL.PHP_EOL;
-
-        return $ret;
-    }
-
-    public function create_function($row)
-    {
-        $ret = "";
-        if (!isset($row['Create Function'])) {
-            throw new Exception("Error getting function code, unknown output. ".
-                "Please check 'https://bugs.mysql.com/bug.php?id=14564'");
-        }
-        $functionStmt = $row['Create Function'];
-        $characterSetClient = $row['character_set_client'];
-        $collationConnection = $row['collation_connection'];
-        $sqlMode = $row['sql_mode'];
-        if ( $this->dumpSettings['skip-definer'] ) {
-            if ($functionStmtReplaced = preg_replace(
-                '/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(FUNCTION\s.*)$/s',
-                '\1 \3',
-                $functionStmt,
-                1
-            )) {
-                $functionStmt = $functionStmtReplaced;
-            }
-        }
-
-        $ret .= "/*!50003 DROP FUNCTION IF EXISTS `".
-            $row['Function']."` */;".PHP_EOL.
-            "/*!40101 SET @saved_cs_client     = @@character_set_client */;".PHP_EOL.
-            "/*!50003 SET @saved_cs_results     = @@character_set_results */ ;".PHP_EOL.
-            "/*!50003 SET @saved_col_connection = @@collation_connection */ ;".PHP_EOL.
-            "/*!40101 SET character_set_client = ".$characterSetClient." */;".PHP_EOL.
-            "/*!40101 SET character_set_results = ".$characterSetClient." */;".PHP_EOL.
-            "/*!50003 SET collation_connection  = ".$collationConnection." */ ;".PHP_EOL.
-            "/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;;".PHP_EOL.
-            "/*!50003 SET sql_mode              = '".$sqlMode."' */ ;;".PHP_EOL.
-            "/*!50003 SET @saved_time_zone      = @@time_zone */ ;;".PHP_EOL.
-            "/*!50003 SET time_zone             = 'SYSTEM' */ ;;".PHP_EOL.
-            "DELIMITER ;;".PHP_EOL.
-            $functionStmt." ;;".PHP_EOL.
-            "DELIMITER ;".PHP_EOL.
-            "/*!50003 SET sql_mode              = @saved_sql_mode */ ;".PHP_EOL.
-            "/*!50003 SET character_set_client  = @saved_cs_client */ ;".PHP_EOL.
-            "/*!50003 SET character_set_results = @saved_cs_results */ ;".PHP_EOL.
-            "/*!50003 SET collation_connection  = @saved_col_connection */ ;".PHP_EOL.
-            "/*!50106 SET TIME_ZONE= @saved_time_zone */ ;".PHP_EOL.PHP_EOL;
-
-
-        return $ret;
-    }
-
-    public function create_event($row)
-    {
-        $ret = "";
-        if (!isset($row['Create Event'])) {
-            throw new Exception("Error getting event code, unknown output. ".
-                "Please check 'http://stackoverflow.com/questions/10853826/mysql-5-5-create-event-gives-syntax-error'");
-        }
-        $eventName = $row['Event'];
-        $eventStmt = $row['Create Event'];
-        $sqlMode = $row['sql_mode'];
-        $definerStr = $this->dumpSettings['skip-definer'] ? '' : '/*!50117 \2*/ ';
-
-        if ($eventStmtReplaced = preg_replace(
-            '/^(CREATE)\s+('.self::DEFINER_RE.')?\s+(EVENT .*)$/',
-            '/*!50106 \1*/ '.$definerStr.'/*!50106 \3 */',
-            $eventStmt,
-            1
-        )) {
-            $eventStmt = $eventStmtReplaced;
-        }
-
-        $ret .= "/*!50106 SET @save_time_zone= @@TIME_ZONE */ ;".PHP_EOL.
-            "/*!50106 DROP EVENT IF EXISTS `".$eventName."` */;".PHP_EOL.
-            "DELIMITER ;;".PHP_EOL.
-            "/*!50003 SET @saved_cs_client      = @@character_set_client */ ;;".PHP_EOL.
-            "/*!50003 SET @saved_cs_results     = @@character_set_results */ ;;".PHP_EOL.
-            "/*!50003 SET @saved_col_connection = @@collation_connection */ ;;".PHP_EOL.
-            "/*!50003 SET character_set_client  = utf8 */ ;;".PHP_EOL.
-            "/*!50003 SET character_set_results = utf8 */ ;;".PHP_EOL.
-            "/*!50003 SET collation_connection  = utf8_general_ci */ ;;".PHP_EOL.
-            "/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;;".PHP_EOL.
-            "/*!50003 SET sql_mode              = '".$sqlMode."' */ ;;".PHP_EOL.
-            "/*!50003 SET @saved_time_zone      = @@time_zone */ ;;".PHP_EOL.
-            "/*!50003 SET time_zone             = 'SYSTEM' */ ;;".PHP_EOL.
-            $eventStmt." ;;".PHP_EOL.
-            "/*!50003 SET time_zone             = @saved_time_zone */ ;;".PHP_EOL.
-            "/*!50003 SET sql_mode              = @saved_sql_mode */ ;;".PHP_EOL.
-            "/*!50003 SET character_set_client  = @saved_cs_client */ ;;".PHP_EOL.
-            "/*!50003 SET character_set_results = @saved_cs_results */ ;;".PHP_EOL.
-            "/*!50003 SET collation_connection  = @saved_col_connection */ ;;".PHP_EOL.
-            "DELIMITER ;".PHP_EOL.
-            "/*!50106 SET TIME_ZONE= @save_time_zone */ ;".PHP_EOL.PHP_EOL;
-            // Commented because we are doing this in restore_parameters()
-            // "/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;" . PHP_EOL . PHP_EOL;
-
-        return $ret;
-    }
-
-    public function show_tables()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "SELECT TABLE_NAME AS tbl_name ".
-            "FROM INFORMATION_SCHEMA.TABLES ".
-            "WHERE TABLE_TYPE='BASE TABLE' AND TABLE_SCHEMA='${args[0]}'";
-    }
-
-    public function show_views()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "SELECT TABLE_NAME AS tbl_name ".
-            "FROM INFORMATION_SCHEMA.TABLES ".
-            "WHERE TABLE_TYPE='VIEW' AND TABLE_SCHEMA='${args[0]}'";
-    }
-
-    public function show_triggers()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "SHOW TRIGGERS FROM `${args[0]}`;";
-    }
-
-    public function show_columns()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "SHOW COLUMNS FROM `${args[0]}`;";
-    }
-
-    public function show_procedures()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "SELECT SPECIFIC_NAME AS procedure_name ".
-            "FROM INFORMATION_SCHEMA.ROUTINES ".
-            "WHERE ROUTINE_TYPE='PROCEDURE' AND ROUTINE_SCHEMA='${args[0]}'";
-    }
-
-    public function show_functions()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "SELECT SPECIFIC_NAME AS function_name ".
-            "FROM INFORMATION_SCHEMA.ROUTINES ".
-            "WHERE ROUTINE_TYPE='FUNCTION' AND ROUTINE_SCHEMA='${args[0]}'";
-    }
-
-    /**
-     * Get query string to ask for names of events from current database.
-     *
-     * @param string Name of database
-     * @return string
-     */
-    public function show_events()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "SELECT EVENT_NAME AS event_name ".
-            "FROM INFORMATION_SCHEMA.EVENTS ".
-            "WHERE EVENT_SCHEMA='${args[0]}'";
-    }
-
-    public function setup_transaction()
-    {
-        return "SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ";
-    }
-
-    public function start_transaction()
-    {
-        return "START TRANSACTION " .
-            "/*!40100 WITH CONSISTENT SNAPSHOT */";
-    }
-
-
-    public function commit_transaction()
-    {
-        return "COMMIT";
-    }
-
-    public function lock_table()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return $this->dbHandler->exec("LOCK TABLES `${args[0]}` READ LOCAL");
-    }
-
-    public function unlock_table()
-    {
-        return $this->dbHandler->exec("UNLOCK TABLES");
-    }
-
-    public function start_add_lock_table()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "LOCK TABLES `${args[0]}` WRITE;".PHP_EOL;
-    }
-
-    public function end_add_lock_table()
-    {
-        return "UNLOCK TABLES;".PHP_EOL;
-    }
-
-    public function start_add_disable_keys()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "/*!40000 ALTER TABLE `${args[0]}` DISABLE KEYS */;".
-            PHP_EOL;
-    }
-
-    public function end_add_disable_keys()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "/*!40000 ALTER TABLE `${args[0]}` ENABLE KEYS */;".
-            PHP_EOL;
-    }
-
-    public function start_disable_autocommit()
-    {
-        return "SET autocommit=0;".PHP_EOL;
-    }
-
-    public function end_disable_autocommit()
-    {
-        return "COMMIT;".PHP_EOL;
-    }
-
-    public function add_drop_database()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "/*!40000 DROP DATABASE IF EXISTS `${args[0]}`*/;".
-            PHP_EOL.PHP_EOL;
-    }
-
-    public function add_drop_trigger()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "DROP TRIGGER IF EXISTS `${args[0]}`;".PHP_EOL;
-    }
-
-    public function drop_table()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "DROP TABLE IF EXISTS `${args[0]}`;".PHP_EOL;
-    }
-
-    public function drop_view()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "DROP TABLE IF EXISTS `${args[0]}`;".PHP_EOL.
-                "/*!50001 DROP VIEW IF EXISTS `${args[0]}`*/;".PHP_EOL;
-    }
-
-    public function getDatabaseHeader()
-    {
-        $this->check_parameters(func_num_args(), $expected_num_args = 1, __METHOD__);
-        $args = func_get_args();
-        return "--".PHP_EOL.
-            "-- Current Database: `${args[0]}`".PHP_EOL.
-            "--".PHP_EOL.PHP_EOL;
-    }
-
-    /**
-     * Decode column metadata and fill info structure.
-     * type, is_numeric and is_blob will always be available.
-     *
-     * @param array $colType Array returned from "SHOW COLUMNS FROM tableName"
-     * @return array
-     */
-    public function parseColumnType($colType)
-    {
-        $colInfo = array();
-        $colParts = explode(" ", $colType['Type']);
-
-        if ($fparen = strpos($colParts[0], "(")) {
-            $colInfo['type'] = substr($colParts[0], 0, $fparen);
-            $colInfo['length'] = str_replace(")", "", substr($colParts[0], $fparen + 1));
-            $colInfo['attributes'] = isset($colParts[1]) ? $colParts[1] : null;
-        } else {
-            $colInfo['type'] = $colParts[0];
-        }
-        $colInfo['is_numeric'] = in_array($colInfo['type'], $this->mysqlTypes['numerical']);
-        $colInfo['is_blob'] = in_array($colInfo['type'], $this->mysqlTypes['blob']);
-        // for virtual columns that are of type 'Extra', column type
-        // could by "STORED GENERATED" or "VIRTUAL GENERATED"
-        // MySQL reference: https://dev.mysql.com/doc/refman/5.7/en/create-table-generated-columns.html
-        $colInfo['is_virtual'] = strpos($colType['Extra'], "VIRTUAL GENERATED") !== false || strpos($colType['Extra'], "STORED GENERATED") !== false;
-
-        return $colInfo;
-    }
-
-    public function backup_parameters()
-    {
-        $ret = "/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;".PHP_EOL.
-            "/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;".PHP_EOL.
-            "/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;".PHP_EOL.
-            "/*!40101 SET NAMES ".$this->dumpSettings['default-character-set']." */;".PHP_EOL;
-
-        if (false === $this->dumpSettings['skip-tz-utc']) {
-            $ret .= "/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;".PHP_EOL.
-                "/*!40103 SET TIME_ZONE='+00:00' */;".PHP_EOL;
-        }
-
-        $ret .= "/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;".PHP_EOL.
-            "/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;".PHP_EOL.
-            "/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;".PHP_EOL.
-            "/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;".PHP_EOL.PHP_EOL;
-
-        return $ret;
-    }
-
-    public function restore_parameters()
-    {
-        $ret = "";
-
-        if (false === $this->dumpSettings['skip-tz-utc']) {
-            $ret .= "/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;".PHP_EOL;
-        }
-
-        $ret .= "/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;".PHP_EOL.
-            "/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;".PHP_EOL.
-            "/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;".PHP_EOL.
-            "/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;".PHP_EOL.
-            "/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;".PHP_EOL.
-            "/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;".PHP_EOL.
-            "/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;".PHP_EOL.PHP_EOL;
-
-        return $ret;
-    }
-
-    /**
-     * Check number of parameters passed to function, useful when inheriting.
-     * Raise exception if unexpected.
-     *
-     * @param integer $num_args
-     * @param integer $expected_num_args
-     * @param string $method_name
-     */
-    private function check_parameters($num_args, $expected_num_args, $method_name)
-    {
-        if ($num_args != $expected_num_args) {
-            throw new Exception("Unexpected parameter passed to $method_name");
-        }
-        return;
-    }
-}
diff --git a/libs/backup.php b/libs/backup.php
index f570e68..5c38e48 100644
--- a/libs/backup.php
+++ b/libs/backup.php
@@ -1,6 +1,8 @@
 <?php
 include_once 'func.php';
-include_once 'Mysqldump.php';
+
+use Ifsnop\Mysqldump;
+
 if (false == check_cookie()) {
 	die('Unauthorized access!');
 }
@@ -24,7 +26,7 @@
 		$partbackup = true;
 	}
 	mkdir($backup_targ, 0755, true);
-	$excl_str = " --exclude '*.zip' --exclude '*.wpress' --exclude 'mybackup'";
+	$excl_str = " --exclude '*.zip' --exclude '*.wpress' --exclude '".trim(MBDIRNAME, '/')."'";
 	$excl_array = array();
 	$info = '';
 	if (!empty($_POST['exclude'])) {
diff --git a/libs/func.php b/libs/func.php
index af07caf..8e8e768 100644
--- a/libs/func.php
+++ b/libs/func.php
@@ -1,9 +1,14 @@
 <?php
 
+
 define('MYBACKUPDIR', dirname(dirname(__FILE__)).'/');
+require_once MYBACKUPDIR.'vendor/autoload.php';
+
+
 define('ABSPATH', dirname(MYBACKUPDIR).'/');
 define('DATAPATH', dirname(dirname(MYBACKUPDIR)).'/backups/');
-define('BASE_URL', '//'.$_SERVER['HTTP_HOST'].dirname($_SERVER['PHP_SELF']).'/');
+define('MBDIRNAME', dirname($_SERVER['PHP_SELF'])); // for example /mybackup
+define('BASE_URL', '//'.$_SERVER['HTTP_HOST'].MBDIRNAME.'/');
 
 define('ENABLE_DOWNLOADS', false); // set to "true" to enable backup downnloads
 
@@ -12,11 +17,8 @@
 use PHPMailer\PHPMailer\PHPMailer;
 use PHPMailer\PHPMailer\SMTP;
 use PHPMailer\PHPMailer\Exception;
-require MYBACKUPDIR . 'libs/phpmailer/Exception.php';
-require MYBACKUPDIR . 'libs/phpmailer/PHPMailer.php';
-require MYBACKUPDIR . 'libs/phpmailer/SMTP.php';
 
-require_once MYBACKUPDIR . 'libs/sendgrid/sendgrid-php.php';
+use SendGrid\Mail\Mail;
 
 // This should be the part of the install process
 if (!file_exists(DATAPATH)) {
@@ -142,11 +144,11 @@ function check_htaccess() {
 function get_authorized() {
 	if (check_htaccess()) return;
 	$home = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on') ? 'https' : 'http';
-	$home .= '://'.$_SERVER['HTTP_HOST'].'/mybackup/';
+	$home .= '://'.$_SERVER['HTTP_HOST'].MBDIRNAME.'/';
 	if ($db = new SQLite3(DATAPATH.'wpbackupsDb.sqlite')) {
 		$confirmed = $db->querySingle("SELECT confirmed FROM backupsettings WHERE id = 1");
 		if ($confirmed != 'yes' && empty($_GET['auth'])) {
-			if ($_SERVER['REQUEST_URI'] != '/mybackup/options.php') {
+			if ($_SERVER['REQUEST_URI'] != MBDIRNAME.'/options.php') {
 				header('Location: '.$home.'options.php');
 				exit;
 			}
@@ -165,7 +167,7 @@ function get_authorized() {
 						header('Location: '.$home.'login.php?msg=invalidsession');
 						exit;
 					} else {
-						setcookie("mybackup_access", $matches[0], time()+(3600*4), "/mybackup/", $_SERVER['HTTP_HOST']);
+						setcookie("mybackup_access", $matches[0], time()+(3600*4), .MBDIRNAME."/", $_SERVER['HTTP_HOST']);
 						$confirmed = $db->querySingle("SELECT confirmed FROM backupsettings WHERE id = 1");
 						if ($confirmed == 'no') {
 							$db->exec("UPDATE backupsettings SET confirmed = 'yes' WHERE id = 1");
@@ -183,7 +185,7 @@ function get_authorized() {
 			}
 		} else {
 			if ($cookie = check_cookie()) {
-				setcookie("mybackup_access", $cookie, time()+(3600*4), "/mybackup/", $_SERVER['HTTP_HOST']);
+				setcookie("mybackup_access", $cookie, time()+(3600*4), MBDIRNAME."/", $_SERVER['HTTP_HOST']);
 			} else {
 				header('Location: '.$home.'login.php?msg=cookieexpired');
 				exit;
@@ -195,7 +197,7 @@ function get_authorized() {
 
 function create_login_url() {
 	$url = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on') ? 'https' : 'http';
-	$url .= '://'.$_SERVER['HTTP_HOST'].'/mybackup/?auth=';
+	$url .= '://'.$_SERVER['HTTP_HOST'].MBDIRNAME.'/?auth=';
 	$slug = md5(uniqid(rand(10000,99999), true));
 	if ($db = new SQLite3(DATAPATH.'wpbackupsDb.sqlite')) {
 		$stmt = $db->prepare("INSERT INTO logins (slug, created, ipadres) VALUES (:slug, :created, :ipadres)");
diff --git a/libs/phpmailer/Exception.php b/libs/phpmailer/Exception.php
deleted file mode 100644
index e7807fc..0000000
--- a/libs/phpmailer/Exception.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-/**
- * PHPMailer Exception class.
- * PHP Version 5.5.
- *
- * @see       https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
- *
- * @author    Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
- * @author    Jim Jagielski (jimjag) <jimjag@gmail.com>
- * @author    Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
- * @author    Brent R. Matzelle (original founder)
- * @copyright 2012 - 2020 Marcus Bointon
- * @copyright 2010 - 2012 Jim Jagielski
- * @copyright 2004 - 2009 Andy Prevost
- * @license   http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
- * @note      This program is distributed in the hope that it will be useful - WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-namespace PHPMailer\PHPMailer;
-
-/**
- * PHPMailer exception handler.
- *
- * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
- */
-class Exception extends \Exception
-{
-    /**
-     * Prettify error message output.
-     *
-     * @return string
-     */
-    public function errorMessage()
-    {
-        return '<strong>' . htmlspecialchars($this->getMessage()) . "</strong><br />\n";
-    }
-}
diff --git a/libs/phpmailer/PHPMailer.php b/libs/phpmailer/PHPMailer.php
deleted file mode 100644
index b214016..0000000
--- a/libs/phpmailer/PHPMailer.php
+++ /dev/null
@@ -1,4840 +0,0 @@
-<?php
-/**
- * PHPMailer - PHP email creation and transport class.
- * PHP Version 5.5.
- *
- * @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
- *
- * @author    Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
- * @author    Jim Jagielski (jimjag) <jimjag@gmail.com>
- * @author    Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
- * @author    Brent R. Matzelle (original founder)
- * @copyright 2012 - 2020 Marcus Bointon
- * @copyright 2010 - 2012 Jim Jagielski
- * @copyright 2004 - 2009 Andy Prevost
- * @license   http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
- * @note      This program is distributed in the hope that it will be useful - WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-namespace PHPMailer\PHPMailer;
-
-/**
- * PHPMailer - PHP email creation and transport class.
- *
- * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
- * @author Jim Jagielski (jimjag) <jimjag@gmail.com>
- * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
- * @author Brent R. Matzelle (original founder)
- */
-class PHPMailer
-{
-    const CHARSET_ASCII = 'us-ascii';
-    const CHARSET_ISO88591 = 'iso-8859-1';
-    const CHARSET_UTF8 = 'utf-8';
-
-    const CONTENT_TYPE_PLAINTEXT = 'text/plain';
-    const CONTENT_TYPE_TEXT_CALENDAR = 'text/calendar';
-    const CONTENT_TYPE_TEXT_HTML = 'text/html';
-    const CONTENT_TYPE_MULTIPART_ALTERNATIVE = 'multipart/alternative';
-    const CONTENT_TYPE_MULTIPART_MIXED = 'multipart/mixed';
-    const CONTENT_TYPE_MULTIPART_RELATED = 'multipart/related';
-
-    const ENCODING_7BIT = '7bit';
-    const ENCODING_8BIT = '8bit';
-    const ENCODING_BASE64 = 'base64';
-    const ENCODING_BINARY = 'binary';
-    const ENCODING_QUOTED_PRINTABLE = 'quoted-printable';
-
-    const ENCRYPTION_STARTTLS = 'tls';
-    const ENCRYPTION_SMTPS = 'ssl';
-
-    const ICAL_METHOD_REQUEST = 'REQUEST';
-    const ICAL_METHOD_PUBLISH = 'PUBLISH';
-    const ICAL_METHOD_REPLY = 'REPLY';
-    const ICAL_METHOD_ADD = 'ADD';
-    const ICAL_METHOD_CANCEL = 'CANCEL';
-    const ICAL_METHOD_REFRESH = 'REFRESH';
-    const ICAL_METHOD_COUNTER = 'COUNTER';
-    const ICAL_METHOD_DECLINECOUNTER = 'DECLINECOUNTER';
-
-    /**
-     * Email priority.
-     * Options: null (default), 1 = High, 3 = Normal, 5 = low.
-     * When null, the header is not set at all.
-     *
-     * @var int|null
-     */
-    public $Priority;
-
-    /**
-     * The character set of the message.
-     *
-     * @var string
-     */
-    public $CharSet = self::CHARSET_ISO88591;
-
-    /**
-     * The MIME Content-type of the message.
-     *
-     * @var string
-     */
-    public $ContentType = self::CONTENT_TYPE_PLAINTEXT;
-
-    /**
-     * The message encoding.
-     * Options: "8bit", "7bit", "binary", "base64", and "quoted-printable".
-     *
-     * @var string
-     */
-    public $Encoding = self::ENCODING_8BIT;
-
-    /**
-     * Holds the most recent mailer error message.
-     *
-     * @var string
-     */
-    public $ErrorInfo = '';
-
-    /**
-     * The From email address for the message.
-     *
-     * @var string
-     */
-    public $From = 'root@localhost';
-
-    /**
-     * The From name of the message.
-     *
-     * @var string
-     */
-    public $FromName = 'Root User';
-
-    /**
-     * The envelope sender of the message.
-     * This will usually be turned into a Return-Path header by the receiver,
-     * and is the address that bounces will be sent to.
-     * If not empty, will be passed via `-f` to sendmail or as the 'MAIL FROM' value over SMTP.
-     *
-     * @var string
-     */
-    public $Sender = '';
-
-    /**
-     * The Subject of the message.
-     *
-     * @var string
-     */
-    public $Subject = '';
-
-    /**
-     * An HTML or plain text message body.
-     * If HTML then call isHTML(true).
-     *
-     * @var string
-     */
-    public $Body = '';
-
-    /**
-     * The plain-text message body.
-     * This body can be read by mail clients that do not have HTML email
-     * capability such as mutt & Eudora.
-     * Clients that can read HTML will view the normal Body.
-     *
-     * @var string
-     */
-    public $AltBody = '';
-
-    /**
-     * An iCal message part body.
-     * Only supported in simple alt or alt_inline message types
-     * To generate iCal event structures, use classes like EasyPeasyICS or iCalcreator.
-     *
-     * @see http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/
-     * @see http://kigkonsult.se/iCalcreator/
-     *
-     * @var string
-     */
-    public $Ical = '';
-
-    /**
-     * Value-array of "method" in Contenttype header "text/calendar"
-     *
-     * @var string[]
-     */
-    protected static $IcalMethods = [
-        self::ICAL_METHOD_REQUEST,
-        self::ICAL_METHOD_PUBLISH,
-        self::ICAL_METHOD_REPLY,
-        self::ICAL_METHOD_ADD,
-        self::ICAL_METHOD_CANCEL,
-        self::ICAL_METHOD_REFRESH,
-        self::ICAL_METHOD_COUNTER,
-        self::ICAL_METHOD_DECLINECOUNTER,
-    ];
-
-    /**
-     * The complete compiled MIME message body.
-     *
-     * @var string
-     */
-    protected $MIMEBody = '';
-
-    /**
-     * The complete compiled MIME message headers.
-     *
-     * @var string
-     */
-    protected $MIMEHeader = '';
-
-    /**
-     * Extra headers that createHeader() doesn't fold in.
-     *
-     * @var string
-     */
-    protected $mailHeader = '';
-
-    /**
-     * Word-wrap the message body to this number of chars.
-     * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance.
-     *
-     * @see static::STD_LINE_LENGTH
-     *
-     * @var int
-     */
-    public $WordWrap = 0;
-
-    /**
-     * Which method to use to send mail.
-     * Options: "mail", "sendmail", or "smtp".
-     *
-     * @var string
-     */
-    public $Mailer = 'mail';
-
-    /**
-     * The path to the sendmail program.
-     *
-     * @var string
-     */
-    public $Sendmail = '/usr/sbin/sendmail';
-
-    /**
-     * Whether mail() uses a fully sendmail-compatible MTA.
-     * One which supports sendmail's "-oi -f" options.
-     *
-     * @var bool
-     */
-    public $UseSendmailOptions = true;
-
-    /**
-     * The email address that a reading confirmation should be sent to, also known as read receipt.
-     *
-     * @var string
-     */
-    public $ConfirmReadingTo = '';
-
-    /**
-     * The hostname to use in the Message-ID header and as default HELO string.
-     * If empty, PHPMailer attempts to find one with, in order,
-     * $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value
-     * 'localhost.localdomain'.
-     *
-     * @see PHPMailer::$Helo
-     *
-     * @var string
-     */
-    public $Hostname = '';
-
-    /**
-     * An ID to be used in the Message-ID header.
-     * If empty, a unique id will be generated.
-     * You can set your own, but it must be in the format "<id@domain>",
-     * as defined in RFC5322 section 3.6.4 or it will be ignored.
-     *
-     * @see https://tools.ietf.org/html/rfc5322#section-3.6.4
-     *
-     * @var string
-     */
-    public $MessageID = '';
-
-    /**
-     * The message Date to be used in the Date header.
-     * If empty, the current date will be added.
-     *
-     * @var string
-     */
-    public $MessageDate = '';
-
-    /**
-     * SMTP hosts.
-     * Either a single hostname or multiple semicolon-delimited hostnames.
-     * You can also specify a different port
-     * for each host by using this format: [hostname:port]
-     * (e.g. "smtp1.example.com:25;smtp2.example.com").
-     * You can also specify encryption type, for example:
-     * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465").
-     * Hosts will be tried in order.
-     *
-     * @var string
-     */
-    public $Host = 'localhost';
-
-    /**
-     * The default SMTP server port.
-     *
-     * @var int
-     */
-    public $Port = 25;
-
-    /**
-     * The SMTP HELO/EHLO name used for the SMTP connection.
-     * Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find
-     * one with the same method described above for $Hostname.
-     *
-     * @see PHPMailer::$Hostname
-     *
-     * @var string
-     */
-    public $Helo = '';
-
-    /**
-     * What kind of encryption to use on the SMTP connection.
-     * Options: '', static::ENCRYPTION_STARTTLS, or static::ENCRYPTION_SMTPS.
-     *
-     * @var string
-     */
-    public $SMTPSecure = '';
-
-    /**
-     * Whether to enable TLS encryption automatically if a server supports it,
-     * even if `SMTPSecure` is not set to 'tls'.
-     * Be aware that in PHP >= 5.6 this requires that the server's certificates are valid.
-     *
-     * @var bool
-     */
-    public $SMTPAutoTLS = true;
-
-    /**
-     * Whether to use SMTP authentication.
-     * Uses the Username and Password properties.
-     *
-     * @see PHPMailer::$Username
-     * @see PHPMailer::$Password
-     *
-     * @var bool
-     */
-    public $SMTPAuth = false;
-
-    /**
-     * Options array passed to stream_context_create when connecting via SMTP.
-     *
-     * @var array
-     */
-    public $SMTPOptions = [];
-
-    /**
-     * SMTP username.
-     *
-     * @var string
-     */
-    public $Username = '';
-
-    /**
-     * SMTP password.
-     *
-     * @var string
-     */
-    public $Password = '';
-
-    /**
-     * SMTP auth type.
-     * Options are CRAM-MD5, LOGIN, PLAIN, XOAUTH2, attempted in that order if not specified.
-     *
-     * @var string
-     */
-    public $AuthType = '';
-
-    /**
-     * An instance of the PHPMailer OAuth class.
-     *
-     * @var OAuth
-     */
-    protected $oauth;
-
-    /**
-     * The SMTP server timeout in seconds.
-     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
-     *
-     * @var int
-     */
-    public $Timeout = 300;
-
-    /**
-     * Comma separated list of DSN notifications
-     * 'NEVER' under no circumstances a DSN must be returned to the sender.
-     *         If you use NEVER all other notifications will be ignored.
-     * 'SUCCESS' will notify you when your mail has arrived at its destination.
-     * 'FAILURE' will arrive if an error occurred during delivery.
-     * 'DELAY'   will notify you if there is an unusual delay in delivery, but the actual
-     *           delivery's outcome (success or failure) is not yet decided.
-     *
-     * @see https://tools.ietf.org/html/rfc3461 See section 4.1 for more information about NOTIFY
-     */
-    public $dsn = '';
-
-    /**
-     * SMTP class debug output mode.
-     * Debug output level.
-     * Options:
-     * * SMTP::DEBUG_OFF: No output
-     * * SMTP::DEBUG_CLIENT: Client messages
-     * * SMTP::DEBUG_SERVER: Client and server messages
-     * * SMTP::DEBUG_CONNECTION: As SERVER plus connection status
-     * * SMTP::DEBUG_LOWLEVEL: Noisy, low-level data output, rarely needed
-     *
-     * @see SMTP::$do_debug
-     *
-     * @var int
-     */
-    public $SMTPDebug = 0;
-
-    /**
-     * How to handle debug output.
-     * Options:
-     * * `echo` Output plain-text as-is, appropriate for CLI
-     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
-     * * `error_log` Output to error log as configured in php.ini
-     * By default PHPMailer will use `echo` if run from a `cli` or `cli-server` SAPI, `html` otherwise.
-     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
-     *
-     * ```php
-     * $mail->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
-     * ```
-     *
-     * Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
-     * level output is used:
-     *
-     * ```php
-     * $mail->Debugoutput = new myPsr3Logger;
-     * ```
-     *
-     * @see SMTP::$Debugoutput
-     *
-     * @var string|callable|\Psr\Log\LoggerInterface
-     */
-    public $Debugoutput = 'echo';
-
-    /**
-     * Whether to keep SMTP connection open after each message.
-     * If this is set to true then to close the connection
-     * requires an explicit call to smtpClose().
-     *
-     * @var bool
-     */
-    public $SMTPKeepAlive = false;
-
-    /**
-     * Whether to split multiple to addresses into multiple messages
-     * or send them all in one message.
-     * Only supported in `mail` and `sendmail` transports, not in SMTP.
-     *
-     * @var bool
-     *
-     * @deprecated 6.0.0 PHPMailer isn't a mailing list manager!
-     */
-    public $SingleTo = false;
-
-    /**
-     * Storage for addresses when SingleTo is enabled.
-     *
-     * @var array
-     */
-    protected $SingleToArray = [];
-
-    /**
-     * Whether to generate VERP addresses on send.
-     * Only applicable when sending via SMTP.
-     *
-     * @see https://en.wikipedia.org/wiki/Variable_envelope_return_path
-     * @see http://www.postfix.org/VERP_README.html Postfix VERP info
-     *
-     * @var bool
-     */
-    public $do_verp = false;
-
-    /**
-     * Whether to allow sending messages with an empty body.
-     *
-     * @var bool
-     */
-    public $AllowEmpty = false;
-
-    /**
-     * DKIM selector.
-     *
-     * @var string
-     */
-    public $DKIM_selector = '';
-
-    /**
-     * DKIM Identity.
-     * Usually the email address used as the source of the email.
-     *
-     * @var string
-     */
-    public $DKIM_identity = '';
-
-    /**
-     * DKIM passphrase.
-     * Used if your key is encrypted.
-     *
-     * @var string
-     */
-    public $DKIM_passphrase = '';
-
-    /**
-     * DKIM signing domain name.
-     *
-     * @example 'example.com'
-     *
-     * @var string
-     */
-    public $DKIM_domain = '';
-
-    /**
-     * DKIM Copy header field values for diagnostic use.
-     *
-     * @var bool
-     */
-    public $DKIM_copyHeaderFields = true;
-
-    /**
-     * DKIM Extra signing headers.
-     *
-     * @example ['List-Unsubscribe', 'List-Help']
-     *
-     * @var array
-     */
-    public $DKIM_extraHeaders = [];
-
-    /**
-     * DKIM private key file path.
-     *
-     * @var string
-     */
-    public $DKIM_private = '';
-
-    /**
-     * DKIM private key string.
-     *
-     * If set, takes precedence over `$DKIM_private`.
-     *
-     * @var string
-     */
-    public $DKIM_private_string = '';
-
-    /**
-     * Callback Action function name.
-     *
-     * The function that handles the result of the send email action.
-     * It is called out by send() for each email sent.
-     *
-     * Value can be any php callable: http://www.php.net/is_callable
-     *
-     * Parameters:
-     *   bool $result        result of the send action
-     *   array   $to            email addresses of the recipients
-     *   array   $cc            cc email addresses
-     *   array   $bcc           bcc email addresses
-     *   string  $subject       the subject
-     *   string  $body          the email body
-     *   string  $from          email address of sender
-     *   string  $extra         extra information of possible use
-     *                          "smtp_transaction_id' => last smtp transaction id
-     *
-     * @var string
-     */
-    public $action_function = '';
-
-    /**
-     * What to put in the X-Mailer header.
-     * Options: An empty string for PHPMailer default, whitespace/null for none, or a string to use.
-     *
-     * @var string|null
-     */
-    public $XMailer = '';
-
-    /**
-     * Which validator to use by default when validating email addresses.
-     * May be a callable to inject your own validator, but there are several built-in validators.
-     * The default validator uses PHP's FILTER_VALIDATE_EMAIL filter_var option.
-     *
-     * @see PHPMailer::validateAddress()
-     *
-     * @var string|callable
-     */
-    public static $validator = 'php';
-
-    /**
-     * An instance of the SMTP sender class.
-     *
-     * @var SMTP
-     */
-    protected $smtp;
-
-    /**
-     * The array of 'to' names and addresses.
-     *
-     * @var array
-     */
-    protected $to = [];
-
-    /**
-     * The array of 'cc' names and addresses.
-     *
-     * @var array
-     */
-    protected $cc = [];
-
-    /**
-     * The array of 'bcc' names and addresses.
-     *
-     * @var array
-     */
-    protected $bcc = [];
-
-    /**
-     * The array of reply-to names and addresses.
-     *
-     * @var array
-     */
-    protected $ReplyTo = [];
-
-    /**
-     * An array of all kinds of addresses.
-     * Includes all of $to, $cc, $bcc.
-     *
-     * @see PHPMailer::$to
-     * @see PHPMailer::$cc
-     * @see PHPMailer::$bcc
-     *
-     * @var array
-     */
-    protected $all_recipients = [];
-
-    /**
-     * An array of names and addresses queued for validation.
-     * In send(), valid and non duplicate entries are moved to $all_recipients
-     * and one of $to, $cc, or $bcc.
-     * This array is used only for addresses with IDN.
-     *
-     * @see PHPMailer::$to
-     * @see PHPMailer::$cc
-     * @see PHPMailer::$bcc
-     * @see PHPMailer::$all_recipients
-     *
-     * @var array
-     */
-    protected $RecipientsQueue = [];
-
-    /**
-     * An array of reply-to names and addresses queued for validation.
-     * In send(), valid and non duplicate entries are moved to $ReplyTo.
-     * This array is used only for addresses with IDN.
-     *
-     * @see PHPMailer::$ReplyTo
-     *
-     * @var array
-     */
-    protected $ReplyToQueue = [];
-
-    /**
-     * The array of attachments.
-     *
-     * @var array
-     */
-    protected $attachment = [];
-
-    /**
-     * The array of custom headers.
-     *
-     * @var array
-     */
-    protected $CustomHeader = [];
-
-    /**
-     * The most recent Message-ID (including angular brackets).
-     *
-     * @var string
-     */
-    protected $lastMessageID = '';
-
-    /**
-     * The message's MIME type.
-     *
-     * @var string
-     */
-    protected $message_type = '';
-
-    /**
-     * The array of MIME boundary strings.
-     *
-     * @var array
-     */
-    protected $boundary = [];
-
-    /**
-     * The array of available languages.
-     *
-     * @var array
-     */
-    protected $language = [];
-
-    /**
-     * The number of errors encountered.
-     *
-     * @var int
-     */
-    protected $error_count = 0;
-
-    /**
-     * The S/MIME certificate file path.
-     *
-     * @var string
-     */
-    protected $sign_cert_file = '';
-
-    /**
-     * The S/MIME key file path.
-     *
-     * @var string
-     */
-    protected $sign_key_file = '';
-
-    /**
-     * The optional S/MIME extra certificates ("CA Chain") file path.
-     *
-     * @var string
-     */
-    protected $sign_extracerts_file = '';
-
-    /**
-     * The S/MIME password for the key.
-     * Used only if the key is encrypted.
-     *
-     * @var string
-     */
-    protected $sign_key_pass = '';
-
-    /**
-     * Whether to throw exceptions for errors.
-     *
-     * @var bool
-     */
-    protected $exceptions = false;
-
-    /**
-     * Unique ID used for message ID and boundaries.
-     *
-     * @var string
-     */
-    protected $uniqueid = '';
-
-    /**
-     * The PHPMailer Version number.
-     *
-     * @var string
-     */
-    const VERSION = '6.1.7';
-
-    /**
-     * Error severity: message only, continue processing.
-     *
-     * @var int
-     */
-    const STOP_MESSAGE = 0;
-
-    /**
-     * Error severity: message, likely ok to continue processing.
-     *
-     * @var int
-     */
-    const STOP_CONTINUE = 1;
-
-    /**
-     * Error severity: message, plus full stop, critical error reached.
-     *
-     * @var int
-     */
-    const STOP_CRITICAL = 2;
-
-    /**
-     * The SMTP standard CRLF line break.
-     * If you want to change line break format, change static::$LE, not this.
-     */
-    const CRLF = "\r\n";
-
-    /**
-     * "Folding White Space" a white space string used for line folding.
-     */
-    const FWS = ' ';
-
-    /**
-     * SMTP RFC standard line ending; Carriage Return, Line Feed.
-     *
-     * @var string
-     */
-    protected static $LE = self::CRLF;
-
-    /**
-     * The maximum line length supported by mail().
-     *
-     * Background: mail() will sometimes corrupt messages
-     * with headers headers longer than 65 chars, see #818.
-     *
-     * @var int
-     */
-    const MAIL_MAX_LINE_LENGTH = 63;
-
-    /**
-     * The maximum line length allowed by RFC 2822 section 2.1.1.
-     *
-     * @var int
-     */
-    const MAX_LINE_LENGTH = 998;
-
-    /**
-     * The lower maximum line length allowed by RFC 2822 section 2.1.1.
-     * This length does NOT include the line break
-     * 76 means that lines will be 77 or 78 chars depending on whether
-     * the line break format is LF or CRLF; both are valid.
-     *
-     * @var int
-     */
-    const STD_LINE_LENGTH = 76;
-
-    /**
-     * Constructor.
-     *
-     * @param bool $exceptions Should we throw external exceptions?
-     */
-    public function __construct($exceptions = null)
-    {
-        if (null !== $exceptions) {
-            $this->exceptions = (bool) $exceptions;
-        }
-        //Pick an appropriate debug output format automatically
-        $this->Debugoutput = (strpos(PHP_SAPI, 'cli') !== false ? 'echo' : 'html');
-    }
-
-    /**
-     * Destructor.
-     */
-    public function __destruct()
-    {
-        //Close any open SMTP connection nicely
-        $this->smtpClose();
-    }
-
-    /**
-     * Call mail() in a safe_mode-aware fashion.
-     * Also, unless sendmail_path points to sendmail (or something that
-     * claims to be sendmail), don't pass params (not a perfect fix,
-     * but it will do).
-     *
-     * @param string      $to      To
-     * @param string      $subject Subject
-     * @param string      $body    Message Body
-     * @param string      $header  Additional Header(s)
-     * @param string|null $params  Params
-     *
-     * @return bool
-     */
-    private function mailPassthru($to, $subject, $body, $header, $params)
-    {
-        //Check overloading of mail function to avoid double-encoding
-        if (ini_get('mbstring.func_overload') & 1) {
-            $subject = $this->secureHeader($subject);
-        } else {
-            $subject = $this->encodeHeader($this->secureHeader($subject));
-        }
-        //Calling mail() with null params breaks
-        if (!$this->UseSendmailOptions || null === $params) {
-            $result = @mail($to, $subject, $body, $header);
-        } else {
-            $result = @mail($to, $subject, $body, $header, $params);
-        }
-
-        return $result;
-    }
-
-    /**
-     * Output debugging info via user-defined method.
-     * Only generates output if SMTP debug output is enabled (@see SMTP::$do_debug).
-     *
-     * @see PHPMailer::$Debugoutput
-     * @see PHPMailer::$SMTPDebug
-     *
-     * @param string $str
-     */
-    protected function edebug($str)
-    {
-        if ($this->SMTPDebug <= 0) {
-            return;
-        }
-        //Is this a PSR-3 logger?
-        if ($this->Debugoutput instanceof \Psr\Log\LoggerInterface) {
-            $this->Debugoutput->debug($str);
-
-            return;
-        }
-        //Avoid clash with built-in function names
-        if (is_callable($this->Debugoutput) && !in_array($this->Debugoutput, ['error_log', 'html', 'echo'])) {
-            call_user_func($this->Debugoutput, $str, $this->SMTPDebug);
-
-            return;
-        }
-        switch ($this->Debugoutput) {
-            case 'error_log':
-                //Don't output, just log
-                /** @noinspection ForgottenDebugOutputInspection */
-                error_log($str);
-                break;
-            case 'html':
-                //Cleans up output a bit for a better looking, HTML-safe output
-                echo htmlentities(
-                    preg_replace('/[\r\n]+/', '', $str),
-                    ENT_QUOTES,
-                    'UTF-8'
-                ), "<br>\n";
-                break;
-            case 'echo':
-            default:
-                //Normalize line breaks
-                $str = preg_replace('/\r\n|\r/m', "\n", $str);
-                echo gmdate('Y-m-d H:i:s'),
-                "\t",
-                    //Trim trailing space
-                trim(
-                    //Indent for readability, except for trailing break
-                    str_replace(
-                        "\n",
-                        "\n                   \t                  ",
-                        trim($str)
-                    )
-                ),
-                "\n";
-        }
-    }
-
-    /**
-     * Sets message type to HTML or plain.
-     *
-     * @param bool $isHtml True for HTML mode
-     */
-    public function isHTML($isHtml = true)
-    {
-        if ($isHtml) {
-            $this->ContentType = static::CONTENT_TYPE_TEXT_HTML;
-        } else {
-            $this->ContentType = static::CONTENT_TYPE_PLAINTEXT;
-        }
-    }
-
-    /**
-     * Send messages using SMTP.
-     */
-    public function isSMTP()
-    {
-        $this->Mailer = 'smtp';
-    }
-
-    /**
-     * Send messages using PHP's mail() function.
-     */
-    public function isMail()
-    {
-        $this->Mailer = 'mail';
-    }
-
-    /**
-     * Send messages using $Sendmail.
-     */
-    public function isSendmail()
-    {
-        $ini_sendmail_path = ini_get('sendmail_path');
-
-        if (false === stripos($ini_sendmail_path, 'sendmail')) {
-            $this->Sendmail = '/usr/sbin/sendmail';
-        } else {
-            $this->Sendmail = $ini_sendmail_path;
-        }
-        $this->Mailer = 'sendmail';
-    }
-
-    /**
-     * Send messages using qmail.
-     */
-    public function isQmail()
-    {
-        $ini_sendmail_path = ini_get('sendmail_path');
-
-        if (false === stripos($ini_sendmail_path, 'qmail')) {
-            $this->Sendmail = '/var/qmail/bin/qmail-inject';
-        } else {
-            $this->Sendmail = $ini_sendmail_path;
-        }
-        $this->Mailer = 'qmail';
-    }
-
-    /**
-     * Add a "To" address.
-     *
-     * @param string $address The email address to send to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addAddress($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('to', $address, $name);
-    }
-
-    /**
-     * Add a "CC" address.
-     *
-     * @param string $address The email address to send to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addCC($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('cc', $address, $name);
-    }
-
-    /**
-     * Add a "BCC" address.
-     *
-     * @param string $address The email address to send to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addBCC($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('bcc', $address, $name);
-    }
-
-    /**
-     * Add a "Reply-To" address.
-     *
-     * @param string $address The email address to reply to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    public function addReplyTo($address, $name = '')
-    {
-        return $this->addOrEnqueueAnAddress('Reply-To', $address, $name);
-    }
-
-    /**
-     * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer
-     * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still
-     * be modified after calling this function), addition of such addresses is delayed until send().
-     * Addresses that have been added already return false, but do not throw exceptions.
-     *
-     * @param string $kind    One of 'to', 'cc', 'bcc', or 'ReplyTo'
-     * @param string $address The email address to send, resp. to reply to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    protected function addOrEnqueueAnAddress($kind, $address, $name)
-    {
-        $address = trim($address);
-        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
-        $pos = strrpos($address, '@');
-        if (false === $pos) {
-            // At-sign is missing.
-            $error_message = sprintf(
-                '%s (%s): %s',
-                $this->lang('invalid_address'),
-                $kind,
-                $address
-            );
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        $params = [$kind, $address, $name];
-        // Enqueue addresses with IDN until we know the PHPMailer::$CharSet.
-        if (static::idnSupported() && $this->has8bitChars(substr($address, ++$pos))) {
-            if ('Reply-To' !== $kind) {
-                if (!array_key_exists($address, $this->RecipientsQueue)) {
-                    $this->RecipientsQueue[$address] = $params;
-
-                    return true;
-                }
-            } elseif (!array_key_exists($address, $this->ReplyToQueue)) {
-                $this->ReplyToQueue[$address] = $params;
-
-                return true;
-            }
-
-            return false;
-        }
-
-        // Immediately add standard addresses without IDN.
-        return call_user_func_array([$this, 'addAnAddress'], $params);
-    }
-
-    /**
-     * Add an address to one of the recipient arrays or to the ReplyTo array.
-     * Addresses that have been added already return false, but do not throw exceptions.
-     *
-     * @param string $kind    One of 'to', 'cc', 'bcc', or 'ReplyTo'
-     * @param string $address The email address to send, resp. to reply to
-     * @param string $name
-     *
-     * @throws Exception
-     *
-     * @return bool true on success, false if address already used or invalid in some way
-     */
-    protected function addAnAddress($kind, $address, $name = '')
-    {
-        if (!in_array($kind, ['to', 'cc', 'bcc', 'Reply-To'])) {
-            $error_message = sprintf(
-                '%s: %s',
-                $this->lang('Invalid recipient kind'),
-                $kind
-            );
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        if (!static::validateAddress($address)) {
-            $error_message = sprintf(
-                '%s (%s): %s',
-                $this->lang('invalid_address'),
-                $kind,
-                $address
-            );
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        if ('Reply-To' !== $kind) {
-            if (!array_key_exists(strtolower($address), $this->all_recipients)) {
-                $this->{$kind}[] = [$address, $name];
-                $this->all_recipients[strtolower($address)] = true;
-
-                return true;
-            }
-        } elseif (!array_key_exists(strtolower($address), $this->ReplyTo)) {
-            $this->ReplyTo[strtolower($address)] = [$address, $name];
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Parse and validate a string containing one or more RFC822-style comma-separated email addresses
-     * of the form "display name <address>" into an array of name/address pairs.
-     * Uses the imap_rfc822_parse_adrlist function if the IMAP extension is available.
-     * Note that quotes in the name part are removed.
-     *
-     * @see http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation
-     *
-     * @param string $addrstr The address list string
-     * @param bool   $useimap Whether to use the IMAP extension to parse the list
-     *
-     * @return array
-     */
-    public static function parseAddresses($addrstr, $useimap = true)
-    {
-        $addresses = [];
-        if ($useimap && function_exists('imap_rfc822_parse_adrlist')) {
-            //Use this built-in parser if it's available
-            $list = imap_rfc822_parse_adrlist($addrstr, '');
-            foreach ($list as $address) {
-                if (('.SYNTAX-ERROR.' !== $address->host) && static::validateAddress(
-                    $address->mailbox . '@' . $address->host
-                )) {
-                    $addresses[] = [
-                        'name' => (property_exists($address, 'personal') ? $address->personal : ''),
-                        'address' => $address->mailbox . '@' . $address->host,
-                    ];
-                }
-            }
-        } else {
-            //Use this simpler parser
-            $list = explode(',', $addrstr);
-            foreach ($list as $address) {
-                $address = trim($address);
-                //Is there a separate name part?
-                if (strpos($address, '<') === false) {
-                    //No separate name, just use the whole thing
-                    if (static::validateAddress($address)) {
-                        $addresses[] = [
-                            'name' => '',
-                            'address' => $address,
-                        ];
-                    }
-                } else {
-                    list($name, $email) = explode('<', $address);
-                    $email = trim(str_replace('>', '', $email));
-                    if (static::validateAddress($email)) {
-                        $addresses[] = [
-                            'name' => trim(str_replace(['"', "'"], '', $name)),
-                            'address' => $email,
-                        ];
-                    }
-                }
-            }
-        }
-
-        return $addresses;
-    }
-
-    /**
-     * Set the From and FromName properties.
-     *
-     * @param string $address
-     * @param string $name
-     * @param bool   $auto    Whether to also set the Sender address, defaults to true
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function setFrom($address, $name = '', $auto = true)
-    {
-        $address = trim($address);
-        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
-        // Don't validate now addresses with IDN. Will be done in send().
-        $pos = strrpos($address, '@');
-        if ((false === $pos)
-            || ((!$this->has8bitChars(substr($address, ++$pos)) || !static::idnSupported())
-            && !static::validateAddress($address))
-        ) {
-            $error_message = sprintf(
-                '%s (From): %s',
-                $this->lang('invalid_address'),
-                $address
-            );
-            $this->setError($error_message);
-            $this->edebug($error_message);
-            if ($this->exceptions) {
-                throw new Exception($error_message);
-            }
-
-            return false;
-        }
-        $this->From = $address;
-        $this->FromName = $name;
-        if ($auto && empty($this->Sender)) {
-            $this->Sender = $address;
-        }
-
-        return true;
-    }
-
-    /**
-     * Return the Message-ID header of the last email.
-     * Technically this is the value from the last time the headers were created,
-     * but it's also the message ID of the last sent message except in
-     * pathological cases.
-     *
-     * @return string
-     */
-    public function getLastMessageID()
-    {
-        return $this->lastMessageID;
-    }
-
-    /**
-     * Check that a string looks like an email address.
-     * Validation patterns supported:
-     * * `auto` Pick best pattern automatically;
-     * * `pcre8` Use the squiloople.com pattern, requires PCRE > 8.0;
-     * * `pcre` Use old PCRE implementation;
-     * * `php` Use PHP built-in FILTER_VALIDATE_EMAIL;
-     * * `html5` Use the pattern given by the HTML5 spec for 'email' type form input elements.
-     * * `noregex` Don't use a regex: super fast, really dumb.
-     * Alternatively you may pass in a callable to inject your own validator, for example:
-     *
-     * ```php
-     * PHPMailer::validateAddress('user@example.com', function($address) {
-     *     return (strpos($address, '@') !== false);
-     * });
-     * ```
-     *
-     * You can also set the PHPMailer::$validator static to a callable, allowing built-in methods to use your validator.
-     *
-     * @param string          $address       The email address to check
-     * @param string|callable $patternselect Which pattern to use
-     *
-     * @return bool
-     */
-    public static function validateAddress($address, $patternselect = null)
-    {
-        if (null === $patternselect) {
-            $patternselect = static::$validator;
-        }
-        if (is_callable($patternselect)) {
-            return call_user_func($patternselect, $address);
-        }
-        //Reject line breaks in addresses; it's valid RFC5322, but not RFC5321
-        if (strpos($address, "\n") !== false || strpos($address, "\r") !== false) {
-            return false;
-        }
-        switch ($patternselect) {
-            case 'pcre': //Kept for BC
-            case 'pcre8':
-                /*
-                 * A more complex and more permissive version of the RFC5322 regex on which FILTER_VALIDATE_EMAIL
-                 * is based.
-                 * In addition to the addresses allowed by filter_var, also permits:
-                 *  * dotless domains: `a@b`
-                 *  * comments: `1234 @ local(blah) .machine .example`
-                 *  * quoted elements: `'"test blah"@example.org'`
-                 *  * numeric TLDs: `a@b.123`
-                 *  * unbracketed IPv4 literals: `a@192.168.0.1`
-                 *  * IPv6 literals: 'first.last@[IPv6:a1::]'
-                 * Not all of these will necessarily work for sending!
-                 *
-                 * @see       http://squiloople.com/2009/12/20/email-address-validation/
-                 * @copyright 2009-2010 Michael Rushton
-                 * Feel free to use and redistribute this code. But please keep this copyright notice.
-                 */
-                return (bool) preg_match(
-                    '/^(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){255,})(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){65,}@)' .
-                    '((?>(?>(?>((?>(?>(?>\x0D\x0A)?[\t ])+|(?>[\t ]*\x0D\x0A)?[\t ]+)?)(\((?>(?2)' .
-                    '(?>[\x01-\x08\x0B\x0C\x0E-\'*-\[\]-\x7F]|\\\[\x00-\x7F]|(?3)))*(?2)\)))+(?2))|(?2))?)' .
-                    '([!#-\'*+\/-9=?^-~-]+|"(?>(?2)(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\x7F]))*' .
-                    '(?2)")(?>(?1)\.(?1)(?4))*(?1)@(?!(?1)[a-z0-9-]{64,})(?1)(?>([a-z0-9](?>[a-z0-9-]*[a-z0-9])?)' .
-                    '(?>(?1)\.(?!(?1)[a-z0-9-]{64,})(?1)(?5)){0,126}|\[(?:(?>IPv6:(?>([a-f0-9]{1,4})(?>:(?6)){7}' .
-                    '|(?!(?:.*[a-f0-9][:\]]){8,})((?6)(?>:(?6)){0,6})?::(?7)?))|(?>(?>IPv6:(?>(?6)(?>:(?6)){5}:' .
-                    '|(?!(?:.*[a-f0-9]:){6,})(?8)?::(?>((?6)(?>:(?6)){0,4}):)?))?(25[0-5]|2[0-4][0-9]|1[0-9]{2}' .
-                    '|[1-9]?[0-9])(?>\.(?9)){3}))\])(?1)$/isD',
-                    $address
-                );
-            case 'html5':
-                /*
-                 * This is the pattern used in the HTML5 spec for validation of 'email' type form input elements.
-                 *
-                 * @see https://html.spec.whatwg.org/#e-mail-state-(type=email)
-                 */
-                return (bool) preg_match(
-                    '/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}' .
-                    '[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/sD',
-                    $address
-                );
-            case 'php':
-            default:
-                return filter_var($address, FILTER_VALIDATE_EMAIL) !== false;
-        }
-    }
-
-    /**
-     * Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the
-     * `intl` and `mbstring` PHP extensions.
-     *
-     * @return bool `true` if required functions for IDN support are present
-     */
-    public static function idnSupported()
-    {
-        return function_exists('idn_to_ascii') && function_exists('mb_convert_encoding');
-    }
-
-    /**
-     * Converts IDN in given email address to its ASCII form, also known as punycode, if possible.
-     * Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet.
-     * This function silently returns unmodified address if:
-     * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form)
-     * - Conversion to punycode is impossible (e.g. required PHP functions are not available)
-     *   or fails for any reason (e.g. domain contains characters not allowed in an IDN).
-     *
-     * @see PHPMailer::$CharSet
-     *
-     * @param string $address The email address to convert
-     *
-     * @return string The encoded address in ASCII form
-     */
-    public function punyencodeAddress($address)
-    {
-        // Verify we have required functions, CharSet, and at-sign.
-        $pos = strrpos($address, '@');
-        if (!empty($this->CharSet) &&
-            false !== $pos &&
-            static::idnSupported()
-        ) {
-            $domain = substr($address, ++$pos);
-            // Verify CharSet string is a valid one, and domain properly encoded in this CharSet.
-            if ($this->has8bitChars($domain) && @mb_check_encoding($domain, $this->CharSet)) {
-                $domain = mb_convert_encoding($domain, 'UTF-8', $this->CharSet);
-                //Ignore IDE complaints about this line - method signature changed in PHP 5.4
-                $errorcode = 0;
-                if (defined('INTL_IDNA_VARIANT_UTS46')) {
-                    $punycode = idn_to_ascii($domain, $errorcode, INTL_IDNA_VARIANT_UTS46);
-                } elseif (defined('INTL_IDNA_VARIANT_2003')) {
-                    $punycode = idn_to_ascii($domain, $errorcode, INTL_IDNA_VARIANT_2003);
-                } else {
-                    $punycode = idn_to_ascii($domain, $errorcode);
-                }
-                if (false !== $punycode) {
-                    return substr($address, 0, $pos) . $punycode;
-                }
-            }
-        }
-
-        return $address;
-    }
-
-    /**
-     * Create a message and send it.
-     * Uses the sending method specified by $Mailer.
-     *
-     * @throws Exception
-     *
-     * @return bool false on error - See the ErrorInfo property for details of the error
-     */
-    public function send()
-    {
-        try {
-            if (!$this->preSend()) {
-                return false;
-            }
-
-            return $this->postSend();
-        } catch (Exception $exc) {
-            $this->mailHeader = '';
-            $this->setError($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-    }
-
-    /**
-     * Prepare a message for sending.
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function preSend()
-    {
-        if ('smtp' === $this->Mailer
-            || ('mail' === $this->Mailer && stripos(PHP_OS, 'WIN') === 0)
-        ) {
-            //SMTP mandates RFC-compliant line endings
-            //and it's also used with mail() on Windows
-            static::setLE(self::CRLF);
-        } else {
-            //Maintain backward compatibility with legacy Linux command line mailers
-            static::setLE(PHP_EOL);
-        }
-        //Check for buggy PHP versions that add a header with an incorrect line break
-        if ('mail' === $this->Mailer
-            && ((PHP_VERSION_ID >= 70000 && PHP_VERSION_ID < 70017)
-                || (PHP_VERSION_ID >= 70100 && PHP_VERSION_ID < 70103))
-            && ini_get('mail.add_x_header') === '1'
-            && stripos(PHP_OS, 'WIN') === 0
-        ) {
-            trigger_error(
-                'Your version of PHP is affected by a bug that may result in corrupted messages.' .
-                ' To fix it, switch to sending using SMTP, disable the mail.add_x_header option in' .
-                ' your php.ini, switch to MacOS or Linux, or upgrade your PHP to version 7.0.17+ or 7.1.3+.',
-                E_USER_WARNING
-            );
-        }
-
-        try {
-            $this->error_count = 0; // Reset errors
-            $this->mailHeader = '';
-
-            // Dequeue recipient and Reply-To addresses with IDN
-            foreach (array_merge($this->RecipientsQueue, $this->ReplyToQueue) as $params) {
-                $params[1] = $this->punyencodeAddress($params[1]);
-                call_user_func_array([$this, 'addAnAddress'], $params);
-            }
-            if (count($this->to) + count($this->cc) + count($this->bcc) < 1) {
-                throw new Exception($this->lang('provide_address'), self::STOP_CRITICAL);
-            }
-
-            // Validate From, Sender, and ConfirmReadingTo addresses
-            foreach (['From', 'Sender', 'ConfirmReadingTo'] as $address_kind) {
-                $this->$address_kind = trim($this->$address_kind);
-                if (empty($this->$address_kind)) {
-                    continue;
-                }
-                $this->$address_kind = $this->punyencodeAddress($this->$address_kind);
-                if (!static::validateAddress($this->$address_kind)) {
-                    $error_message = sprintf(
-                        '%s (%s): %s',
-                        $this->lang('invalid_address'),
-                        $address_kind,
-                        $this->$address_kind
-                    );
-                    $this->setError($error_message);
-                    $this->edebug($error_message);
-                    if ($this->exceptions) {
-                        throw new Exception($error_message);
-                    }
-
-                    return false;
-                }
-            }
-
-            // Set whether the message is multipart/alternative
-            if ($this->alternativeExists()) {
-                $this->ContentType = static::CONTENT_TYPE_MULTIPART_ALTERNATIVE;
-            }
-
-            $this->setMessageType();
-            // Refuse to send an empty message unless we are specifically allowing it
-            if (!$this->AllowEmpty && empty($this->Body)) {
-                throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL);
-            }
-
-            //Trim subject consistently
-            $this->Subject = trim($this->Subject);
-            // Create body before headers in case body makes changes to headers (e.g. altering transfer encoding)
-            $this->MIMEHeader = '';
-            $this->MIMEBody = $this->createBody();
-            // createBody may have added some headers, so retain them
-            $tempheaders = $this->MIMEHeader;
-            $this->MIMEHeader = $this->createHeader();
-            $this->MIMEHeader .= $tempheaders;
-
-            // To capture the complete message when using mail(), create
-            // an extra header list which createHeader() doesn't fold in
-            if ('mail' === $this->Mailer) {
-                if (count($this->to) > 0) {
-                    $this->mailHeader .= $this->addrAppend('To', $this->to);
-                } else {
-                    $this->mailHeader .= $this->headerLine('To', 'undisclosed-recipients:;');
-                }
-                $this->mailHeader .= $this->headerLine(
-                    'Subject',
-                    $this->encodeHeader($this->secureHeader($this->Subject))
-                );
-            }
-
-            // Sign with DKIM if enabled
-            if (!empty($this->DKIM_domain)
-                && !empty($this->DKIM_selector)
-                && (!empty($this->DKIM_private_string)
-                    || (!empty($this->DKIM_private)
-                        && static::isPermittedPath($this->DKIM_private)
-                        && file_exists($this->DKIM_private)
-                    )
-                )
-            ) {
-                $header_dkim = $this->DKIM_Add(
-                    $this->MIMEHeader . $this->mailHeader,
-                    $this->encodeHeader($this->secureHeader($this->Subject)),
-                    $this->MIMEBody
-                );
-                $this->MIMEHeader = static::stripTrailingWSP($this->MIMEHeader) . static::$LE .
-                    static::normalizeBreaks($header_dkim) . static::$LE;
-            }
-
-            return true;
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-    }
-
-    /**
-     * Actually send a message via the selected mechanism.
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function postSend()
-    {
-        try {
-            // Choose the mailer and send through it
-            switch ($this->Mailer) {
-                case 'sendmail':
-                case 'qmail':
-                    return $this->sendmailSend($this->MIMEHeader, $this->MIMEBody);
-                case 'smtp':
-                    return $this->smtpSend($this->MIMEHeader, $this->MIMEBody);
-                case 'mail':
-                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
-                default:
-                    $sendMethod = $this->Mailer . 'Send';
-                    if (method_exists($this, $sendMethod)) {
-                        return $this->$sendMethod($this->MIMEHeader, $this->MIMEBody);
-                    }
-
-                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
-            }
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Send mail using the $Sendmail program.
-     *
-     * @see PHPMailer::$Sendmail
-     *
-     * @param string $header The message headers
-     * @param string $body   The message body
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    protected function sendmailSend($header, $body)
-    {
-        $header = static::stripTrailingWSP($header) . static::$LE . static::$LE;
-
-        // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
-        if (!empty($this->Sender) && self::isShellSafe($this->Sender)) {
-            if ('qmail' === $this->Mailer) {
-                $sendmailFmt = '%s -f%s';
-            } else {
-                $sendmailFmt = '%s -oi -f%s -t';
-            }
-        } elseif ('qmail' === $this->Mailer) {
-            $sendmailFmt = '%s';
-        } else {
-            $sendmailFmt = '%s -oi -t';
-        }
-
-        $sendmail = sprintf($sendmailFmt, escapeshellcmd($this->Sendmail), $this->Sender);
-
-        if ($this->SingleTo) {
-            foreach ($this->SingleToArray as $toAddr) {
-                $mail = @popen($sendmail, 'w');
-                if (!$mail) {
-                    throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-                }
-                fwrite($mail, 'To: ' . $toAddr . "\n");
-                fwrite($mail, $header);
-                fwrite($mail, $body);
-                $result = pclose($mail);
-                $this->doCallback(
-                    ($result === 0),
-                    [$toAddr],
-                    $this->cc,
-                    $this->bcc,
-                    $this->Subject,
-                    $body,
-                    $this->From,
-                    []
-                );
-                if (0 !== $result) {
-                    throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-                }
-            }
-        } else {
-            $mail = @popen($sendmail, 'w');
-            if (!$mail) {
-                throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-            }
-            fwrite($mail, $header);
-            fwrite($mail, $body);
-            $result = pclose($mail);
-            $this->doCallback(
-                ($result === 0),
-                $this->to,
-                $this->cc,
-                $this->bcc,
-                $this->Subject,
-                $body,
-                $this->From,
-                []
-            );
-            if (0 !== $result) {
-                throw new Exception($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Fix CVE-2016-10033 and CVE-2016-10045 by disallowing potentially unsafe shell characters.
-     * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows.
-     *
-     * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report
-     *
-     * @param string $string The string to be validated
-     *
-     * @return bool
-     */
-    protected static function isShellSafe($string)
-    {
-        // Future-proof
-        if (escapeshellcmd($string) !== $string
-            || !in_array(escapeshellarg($string), ["'$string'", "\"$string\""])
-        ) {
-            return false;
-        }
-
-        $length = strlen($string);
-
-        for ($i = 0; $i < $length; ++$i) {
-            $c = $string[$i];
-
-            // All other characters have a special meaning in at least one common shell, including = and +.
-            // Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here.
-            // Note that this does permit non-Latin alphanumeric characters based on the current locale.
-            if (!ctype_alnum($c) && strpos('@_-.', $c) === false) {
-                return false;
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Check whether a file path is of a permitted type.
-     * Used to reject URLs and phar files from functions that access local file paths,
-     * such as addAttachment.
-     *
-     * @param string $path A relative or absolute path to a file
-     *
-     * @return bool
-     */
-    protected static function isPermittedPath($path)
-    {
-        return !preg_match('#^[a-z]+://#i', $path);
-    }
-
-    /**
-     * Send mail using the PHP mail() function.
-     *
-     * @see http://www.php.net/manual/en/book.mail.php
-     *
-     * @param string $header The message headers
-     * @param string $body   The message body
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    protected function mailSend($header, $body)
-    {
-        $header = static::stripTrailingWSP($header) . static::$LE . static::$LE;
-
-        $toArr = [];
-        foreach ($this->to as $toaddr) {
-            $toArr[] = $this->addrFormat($toaddr);
-        }
-        $to = implode(', ', $toArr);
-
-        $params = null;
-        //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver
-        //A space after `-f` is optional, but there is a long history of its presence
-        //causing problems, so we don't use one
-        //Exim docs: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-the_exim_command_line.html
-        //Sendmail docs: http://www.sendmail.org/~ca/email/man/sendmail.html
-        //Qmail docs: http://www.qmail.org/man/man8/qmail-inject.html
-        //Example problem: https://www.drupal.org/node/1057954
-        // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
-        if (!empty($this->Sender) && static::validateAddress($this->Sender) && self::isShellSafe($this->Sender)) {
-            $params = sprintf('-f%s', $this->Sender);
-        }
-        if (!empty($this->Sender) && static::validateAddress($this->Sender)) {
-            $old_from = ini_get('sendmail_from');
-            ini_set('sendmail_from', $this->Sender);
-        }
-        $result = false;
-        if ($this->SingleTo && count($toArr) > 1) {
-            foreach ($toArr as $toAddr) {
-                $result = $this->mailPassthru($toAddr, $this->Subject, $body, $header, $params);
-                $this->doCallback($result, [$toAddr], $this->cc, $this->bcc, $this->Subject, $body, $this->From, []);
-            }
-        } else {
-            $result = $this->mailPassthru($to, $this->Subject, $body, $header, $params);
-            $this->doCallback($result, $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From, []);
-        }
-        if (isset($old_from)) {
-            ini_set('sendmail_from', $old_from);
-        }
-        if (!$result) {
-            throw new Exception($this->lang('instantiate'), self::STOP_CRITICAL);
-        }
-
-        return true;
-    }
-
-    /**
-     * Get an instance to use for SMTP operations.
-     * Override this function to load your own SMTP implementation,
-     * or set one with setSMTPInstance.
-     *
-     * @return SMTP
-     */
-    public function getSMTPInstance()
-    {
-        if (!is_object($this->smtp)) {
-            $this->smtp = new SMTP();
-        }
-
-        return $this->smtp;
-    }
-
-    /**
-     * Provide an instance to use for SMTP operations.
-     *
-     * @return SMTP
-     */
-    public function setSMTPInstance(SMTP $smtp)
-    {
-        $this->smtp = $smtp;
-
-        return $this->smtp;
-    }
-
-    /**
-     * Send mail via SMTP.
-     * Returns false if there is a bad MAIL FROM, RCPT, or DATA input.
-     *
-     * @see PHPMailer::setSMTPInstance() to use a different class.
-     *
-     * @uses \PHPMailer\PHPMailer\SMTP
-     *
-     * @param string $header The message headers
-     * @param string $body   The message body
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    protected function smtpSend($header, $body)
-    {
-        $header = static::stripTrailingWSP($header) . static::$LE . static::$LE;
-        $bad_rcpt = [];
-        if (!$this->smtpConnect($this->SMTPOptions)) {
-            throw new Exception($this->lang('smtp_connect_failed'), self::STOP_CRITICAL);
-        }
-        //Sender already validated in preSend()
-        if ('' === $this->Sender) {
-            $smtp_from = $this->From;
-        } else {
-            $smtp_from = $this->Sender;
-        }
-        if (!$this->smtp->mail($smtp_from)) {
-            $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError()));
-            throw new Exception($this->ErrorInfo, self::STOP_CRITICAL);
-        }
-
-        $callbacks = [];
-        // Attempt to send to all recipients
-        foreach ([$this->to, $this->cc, $this->bcc] as $togroup) {
-            foreach ($togroup as $to) {
-                if (!$this->smtp->recipient($to[0], $this->dsn)) {
-                    $error = $this->smtp->getError();
-                    $bad_rcpt[] = ['to' => $to[0], 'error' => $error['detail']];
-                    $isSent = false;
-                } else {
-                    $isSent = true;
-                }
-
-                $callbacks[] = ['issent'=>$isSent, 'to'=>$to[0]];
-            }
-        }
-
-        // Only send the DATA command if we have viable recipients
-        if ((count($this->all_recipients) > count($bad_rcpt)) && !$this->smtp->data($header . $body)) {
-            throw new Exception($this->lang('data_not_accepted'), self::STOP_CRITICAL);
-        }
-
-        $smtp_transaction_id = $this->smtp->getLastTransactionID();
-
-        if ($this->SMTPKeepAlive) {
-            $this->smtp->reset();
-        } else {
-            $this->smtp->quit();
-            $this->smtp->close();
-        }
-
-        foreach ($callbacks as $cb) {
-            $this->doCallback(
-                $cb['issent'],
-                [$cb['to']],
-                [],
-                [],
-                $this->Subject,
-                $body,
-                $this->From,
-                ['smtp_transaction_id' => $smtp_transaction_id]
-            );
-        }
-
-        //Create error message for any bad addresses
-        if (count($bad_rcpt) > 0) {
-            $errstr = '';
-            foreach ($bad_rcpt as $bad) {
-                $errstr .= $bad['to'] . ': ' . $bad['error'];
-            }
-            throw new Exception($this->lang('recipients_failed') . $errstr, self::STOP_CONTINUE);
-        }
-
-        return true;
-    }
-
-    /**
-     * Initiate a connection to an SMTP server.
-     * Returns false if the operation failed.
-     *
-     * @param array $options An array of options compatible with stream_context_create()
-     *
-     * @throws Exception
-     *
-     * @uses \PHPMailer\PHPMailer\SMTP
-     *
-     * @return bool
-     */
-    public function smtpConnect($options = null)
-    {
-        if (null === $this->smtp) {
-            $this->smtp = $this->getSMTPInstance();
-        }
-
-        //If no options are provided, use whatever is set in the instance
-        if (null === $options) {
-            $options = $this->SMTPOptions;
-        }
-
-        // Already connected?
-        if ($this->smtp->connected()) {
-            return true;
-        }
-
-        $this->smtp->setTimeout($this->Timeout);
-        $this->smtp->setDebugLevel($this->SMTPDebug);
-        $this->smtp->setDebugOutput($this->Debugoutput);
-        $this->smtp->setVerp($this->do_verp);
-        $hosts = explode(';', $this->Host);
-        $lastexception = null;
-
-        foreach ($hosts as $hostentry) {
-            $hostinfo = [];
-            if (!preg_match(
-                '/^(?:(ssl|tls):\/\/)?(.+?)(?::(\d+))?$/',
-                trim($hostentry),
-                $hostinfo
-            )) {
-                $this->edebug($this->lang('invalid_hostentry') . ' ' . trim($hostentry));
-                // Not a valid host entry
-                continue;
-            }
-            // $hostinfo[1]: optional ssl or tls prefix
-            // $hostinfo[2]: the hostname
-            // $hostinfo[3]: optional port number
-            // The host string prefix can temporarily override the current setting for SMTPSecure
-            // If it's not specified, the default value is used
-
-            //Check the host name is a valid name or IP address before trying to use it
-            if (!static::isValidHost($hostinfo[2])) {
-                $this->edebug($this->lang('invalid_host') . ' ' . $hostinfo[2]);
-                continue;
-            }
-            $prefix = '';
-            $secure = $this->SMTPSecure;
-            $tls = (static::ENCRYPTION_STARTTLS === $this->SMTPSecure);
-            if ('ssl' === $hostinfo[1] || ('' === $hostinfo[1] && static::ENCRYPTION_SMTPS === $this->SMTPSecure)) {
-                $prefix = 'ssl://';
-                $tls = false; // Can't have SSL and TLS at the same time
-                $secure = static::ENCRYPTION_SMTPS;
-            } elseif ('tls' === $hostinfo[1]) {
-                $tls = true;
-                // tls doesn't use a prefix
-                $secure = static::ENCRYPTION_STARTTLS;
-            }
-            //Do we need the OpenSSL extension?
-            $sslext = defined('OPENSSL_ALGO_SHA256');
-            if (static::ENCRYPTION_STARTTLS === $secure || static::ENCRYPTION_SMTPS === $secure) {
-                //Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled
-                if (!$sslext) {
-                    throw new Exception($this->lang('extension_missing') . 'openssl', self::STOP_CRITICAL);
-                }
-            }
-            $host = $hostinfo[2];
-            $port = $this->Port;
-            if (
-                array_key_exists(3, $hostinfo) &&
-                is_numeric($hostinfo[3]) &&
-                $hostinfo[3] > 0 &&
-                $hostinfo[3] < 65536
-            ) {
-                $port = (int) $hostinfo[3];
-            }
-            if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) {
-                try {
-                    if ($this->Helo) {
-                        $hello = $this->Helo;
-                    } else {
-                        $hello = $this->serverHostname();
-                    }
-                    $this->smtp->hello($hello);
-                    //Automatically enable TLS encryption if:
-                    // * it's not disabled
-                    // * we have openssl extension
-                    // * we are not already using SSL
-                    // * the server offers STARTTLS
-                    if ($this->SMTPAutoTLS && $sslext && 'ssl' !== $secure && $this->smtp->getServerExt('STARTTLS')) {
-                        $tls = true;
-                    }
-                    if ($tls) {
-                        if (!$this->smtp->startTLS()) {
-                            throw new Exception($this->lang('connect_host'));
-                        }
-                        // We must resend EHLO after TLS negotiation
-                        $this->smtp->hello($hello);
-                    }
-                    if ($this->SMTPAuth && !$this->smtp->authenticate(
-                        $this->Username,
-                        $this->Password,
-                        $this->AuthType,
-                        $this->oauth
-                    )) {
-                        throw new Exception($this->lang('authenticate'));
-                    }
-
-                    return true;
-                } catch (Exception $exc) {
-                    $lastexception = $exc;
-                    $this->edebug($exc->getMessage());
-                    // We must have connected, but then failed TLS or Auth, so close connection nicely
-                    $this->smtp->quit();
-                }
-            }
-        }
-        // If we get here, all connection attempts have failed, so close connection hard
-        $this->smtp->close();
-        // As we've caught all exceptions, just report whatever the last one was
-        if ($this->exceptions && null !== $lastexception) {
-            throw $lastexception;
-        }
-
-        return false;
-    }
-
-    /**
-     * Close the active SMTP session if one exists.
-     */
-    public function smtpClose()
-    {
-        if ((null !== $this->smtp) && $this->smtp->connected()) {
-            $this->smtp->quit();
-            $this->smtp->close();
-        }
-    }
-
-    /**
-     * Set the language for error messages.
-     * Returns false if it cannot load the language file.
-     * The default language is English.
-     *
-     * @param string $langcode  ISO 639-1 2-character language code (e.g. French is "fr")
-     * @param string $lang_path Path to the language file directory, with trailing separator (slash)
-     *
-     * @return bool
-     */
-    public function setLanguage($langcode = 'en', $lang_path = '')
-    {
-        // Backwards compatibility for renamed language codes
-        $renamed_langcodes = [
-            'br' => 'pt_br',
-            'cz' => 'cs',
-            'dk' => 'da',
-            'no' => 'nb',
-            'se' => 'sv',
-            'rs' => 'sr',
-            'tg' => 'tl',
-            'am' => 'hy',
-        ];
-
-        if (isset($renamed_langcodes[$langcode])) {
-            $langcode = $renamed_langcodes[$langcode];
-        }
-
-        // Define full set of translatable strings in English
-        $PHPMAILER_LANG = [
-            'authenticate' => 'SMTP Error: Could not authenticate.',
-            'connect_host' => 'SMTP Error: Could not connect to SMTP host.',
-            'data_not_accepted' => 'SMTP Error: data not accepted.',
-            'empty_message' => 'Message body empty',
-            'encoding' => 'Unknown encoding: ',
-            'execute' => 'Could not execute: ',
-            'file_access' => 'Could not access file: ',
-            'file_open' => 'File Error: Could not open file: ',
-            'from_failed' => 'The following From address failed: ',
-            'instantiate' => 'Could not instantiate mail function.',
-            'invalid_address' => 'Invalid address: ',
-            'invalid_hostentry' => 'Invalid hostentry: ',
-            'invalid_host' => 'Invalid host: ',
-            'mailer_not_supported' => ' mailer is not supported.',
-            'provide_address' => 'You must provide at least one recipient email address.',
-            'recipients_failed' => 'SMTP Error: The following recipients failed: ',
-            'signing' => 'Signing Error: ',
-            'smtp_connect_failed' => 'SMTP connect() failed.',
-            'smtp_error' => 'SMTP server error: ',
-            'variable_set' => 'Cannot set or reset variable: ',
-            'extension_missing' => 'Extension missing: ',
-        ];
-        if (empty($lang_path)) {
-            // Calculate an absolute path so it can work if CWD is not here
-            $lang_path = dirname(__DIR__) . DIRECTORY_SEPARATOR . 'language' . DIRECTORY_SEPARATOR;
-        }
-        //Validate $langcode
-        if (!preg_match('/^[a-z]{2}(?:_[a-zA-Z]{2})?$/', $langcode)) {
-            $langcode = 'en';
-        }
-        $foundlang = true;
-        $lang_file = $lang_path . 'phpmailer.lang-' . $langcode . '.php';
-        // There is no English translation file
-        if ('en' !== $langcode) {
-            // Make sure language file path is readable
-            if (!static::isPermittedPath($lang_file) || !file_exists($lang_file)) {
-                $foundlang = false;
-            } else {
-                // Overwrite language-specific strings.
-                // This way we'll never have missing translation keys.
-                $foundlang = include $lang_file;
-            }
-        }
-        $this->language = $PHPMAILER_LANG;
-
-        return (bool) $foundlang; // Returns false if language not found
-    }
-
-    /**
-     * Get the array of strings for the current language.
-     *
-     * @return array
-     */
-    public function getTranslations()
-    {
-        return $this->language;
-    }
-
-    /**
-     * Create recipient headers.
-     *
-     * @param string $type
-     * @param array  $addr An array of recipients,
-     *                     where each recipient is a 2-element indexed array with element 0 containing an address
-     *                     and element 1 containing a name, like:
-     *                     [['joe@example.com', 'Joe User'], ['zoe@example.com', 'Zoe User']]
-     *
-     * @return string
-     */
-    public function addrAppend($type, $addr)
-    {
-        $addresses = [];
-        foreach ($addr as $address) {
-            $addresses[] = $this->addrFormat($address);
-        }
-
-        return $type . ': ' . implode(', ', $addresses) . static::$LE;
-    }
-
-    /**
-     * Format an address for use in a message header.
-     *
-     * @param array $addr A 2-element indexed array, element 0 containing an address, element 1 containing a name like
-     *                    ['joe@example.com', 'Joe User']
-     *
-     * @return string
-     */
-    public function addrFormat($addr)
-    {
-        if (empty($addr[1])) { // No name provided
-            return $this->secureHeader($addr[0]);
-        }
-
-        return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') .
-            ' <' . $this->secureHeader($addr[0]) . '>';
-    }
-
-    /**
-     * Word-wrap message.
-     * For use with mailers that do not automatically perform wrapping
-     * and for quoted-printable encoded messages.
-     * Original written by philippe.
-     *
-     * @param string $message The message to wrap
-     * @param int    $length  The line length to wrap to
-     * @param bool   $qp_mode Whether to run in Quoted-Printable mode
-     *
-     * @return string
-     */
-    public function wrapText($message, $length, $qp_mode = false)
-    {
-        if ($qp_mode) {
-            $soft_break = sprintf(' =%s', static::$LE);
-        } else {
-            $soft_break = static::$LE;
-        }
-        // If utf-8 encoding is used, we will need to make sure we don't
-        // split multibyte characters when we wrap
-        $is_utf8 = static::CHARSET_UTF8 === strtolower($this->CharSet);
-        $lelen = strlen(static::$LE);
-        $crlflen = strlen(static::$LE);
-
-        $message = static::normalizeBreaks($message);
-        //Remove a trailing line break
-        if (substr($message, -$lelen) === static::$LE) {
-            $message = substr($message, 0, -$lelen);
-        }
-
-        //Split message into lines
-        $lines = explode(static::$LE, $message);
-        //Message will be rebuilt in here
-        $message = '';
-        foreach ($lines as $line) {
-            $words = explode(' ', $line);
-            $buf = '';
-            $firstword = true;
-            foreach ($words as $word) {
-                if ($qp_mode && (strlen($word) > $length)) {
-                    $space_left = $length - strlen($buf) - $crlflen;
-                    if (!$firstword) {
-                        if ($space_left > 20) {
-                            $len = $space_left;
-                            if ($is_utf8) {
-                                $len = $this->utf8CharBoundary($word, $len);
-                            } elseif ('=' === substr($word, $len - 1, 1)) {
-                                --$len;
-                            } elseif ('=' === substr($word, $len - 2, 1)) {
-                                $len -= 2;
-                            }
-                            $part = substr($word, 0, $len);
-                            $word = substr($word, $len);
-                            $buf .= ' ' . $part;
-                            $message .= $buf . sprintf('=%s', static::$LE);
-                        } else {
-                            $message .= $buf . $soft_break;
-                        }
-                        $buf = '';
-                    }
-                    while ($word !== '') {
-                        if ($length <= 0) {
-                            break;
-                        }
-                        $len = $length;
-                        if ($is_utf8) {
-                            $len = $this->utf8CharBoundary($word, $len);
-                        } elseif ('=' === substr($word, $len - 1, 1)) {
-                            --$len;
-                        } elseif ('=' === substr($word, $len - 2, 1)) {
-                            $len -= 2;
-                        }
-                        $part = substr($word, 0, $len);
-                        $word = (string) substr($word, $len);
-
-                        if ($word !== '') {
-                            $message .= $part . sprintf('=%s', static::$LE);
-                        } else {
-                            $buf = $part;
-                        }
-                    }
-                } else {
-                    $buf_o = $buf;
-                    if (!$firstword) {
-                        $buf .= ' ';
-                    }
-                    $buf .= $word;
-
-                    if ('' !== $buf_o && strlen($buf) > $length) {
-                        $message .= $buf_o . $soft_break;
-                        $buf = $word;
-                    }
-                }
-                $firstword = false;
-            }
-            $message .= $buf . static::$LE;
-        }
-
-        return $message;
-    }
-
-    /**
-     * Find the last character boundary prior to $maxLength in a utf-8
-     * quoted-printable encoded string.
-     * Original written by Colin Brown.
-     *
-     * @param string $encodedText utf-8 QP text
-     * @param int    $maxLength   Find the last character boundary prior to this length
-     *
-     * @return int
-     */
-    public function utf8CharBoundary($encodedText, $maxLength)
-    {
-        $foundSplitPos = false;
-        $lookBack = 3;
-        while (!$foundSplitPos) {
-            $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack);
-            $encodedCharPos = strpos($lastChunk, '=');
-            if (false !== $encodedCharPos) {
-                // Found start of encoded character byte within $lookBack block.
-                // Check the encoded byte value (the 2 chars after the '=')
-                $hex = substr($encodedText, $maxLength - $lookBack + $encodedCharPos + 1, 2);
-                $dec = hexdec($hex);
-                if ($dec < 128) {
-                    // Single byte character.
-                    // If the encoded char was found at pos 0, it will fit
-                    // otherwise reduce maxLength to start of the encoded char
-                    if ($encodedCharPos > 0) {
-                        $maxLength -= $lookBack - $encodedCharPos;
-                    }
-                    $foundSplitPos = true;
-                } elseif ($dec >= 192) {
-                    // First byte of a multi byte character
-                    // Reduce maxLength to split at start of character
-                    $maxLength -= $lookBack - $encodedCharPos;
-                    $foundSplitPos = true;
-                } elseif ($dec < 192) {
-                    // Middle byte of a multi byte character, look further back
-                    $lookBack += 3;
-                }
-            } else {
-                // No encoded character found
-                $foundSplitPos = true;
-            }
-        }
-
-        return $maxLength;
-    }
-
-    /**
-     * Apply word wrapping to the message body.
-     * Wraps the message body to the number of chars set in the WordWrap property.
-     * You should only do this to plain-text bodies as wrapping HTML tags may break them.
-     * This is called automatically by createBody(), so you don't need to call it yourself.
-     */
-    public function setWordWrap()
-    {
-        if ($this->WordWrap < 1) {
-            return;
-        }
-
-        switch ($this->message_type) {
-            case 'alt':
-            case 'alt_inline':
-            case 'alt_attach':
-            case 'alt_inline_attach':
-                $this->AltBody = $this->wrapText($this->AltBody, $this->WordWrap);
-                break;
-            default:
-                $this->Body = $this->wrapText($this->Body, $this->WordWrap);
-                break;
-        }
-    }
-
-    /**
-     * Assemble message headers.
-     *
-     * @return string The assembled headers
-     */
-    public function createHeader()
-    {
-        $result = '';
-
-        $result .= $this->headerLine('Date', '' === $this->MessageDate ? self::rfcDate() : $this->MessageDate);
-
-        // The To header is created automatically by mail(), so needs to be omitted here
-        if ('mail' !== $this->Mailer) {
-            if ($this->SingleTo) {
-                foreach ($this->to as $toaddr) {
-                    $this->SingleToArray[] = $this->addrFormat($toaddr);
-                }
-            } elseif (count($this->to) > 0) {
-                $result .= $this->addrAppend('To', $this->to);
-            } elseif (count($this->cc) === 0) {
-                $result .= $this->headerLine('To', 'undisclosed-recipients:;');
-            }
-        }
-        $result .= $this->addrAppend('From', [[trim($this->From), $this->FromName]]);
-
-        // sendmail and mail() extract Cc from the header before sending
-        if (count($this->cc) > 0) {
-            $result .= $this->addrAppend('Cc', $this->cc);
-        }
-
-        // sendmail and mail() extract Bcc from the header before sending
-        if ((
-                'sendmail' === $this->Mailer || 'qmail' === $this->Mailer || 'mail' === $this->Mailer
-            )
-            && count($this->bcc) > 0
-        ) {
-            $result .= $this->addrAppend('Bcc', $this->bcc);
-        }
-
-        if (count($this->ReplyTo) > 0) {
-            $result .= $this->addrAppend('Reply-To', $this->ReplyTo);
-        }
-
-        // mail() sets the subject itself
-        if ('mail' !== $this->Mailer) {
-            $result .= $this->headerLine('Subject', $this->encodeHeader($this->secureHeader($this->Subject)));
-        }
-
-        // Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4
-        // https://tools.ietf.org/html/rfc5322#section-3.6.4
-        if ('' !== $this->MessageID && preg_match('/^<.*@.*>$/', $this->MessageID)) {
-            $this->lastMessageID = $this->MessageID;
-        } else {
-            $this->lastMessageID = sprintf('<%s@%s>', $this->uniqueid, $this->serverHostname());
-        }
-        $result .= $this->headerLine('Message-ID', $this->lastMessageID);
-        if (null !== $this->Priority) {
-            $result .= $this->headerLine('X-Priority', $this->Priority);
-        }
-        if ('' === $this->XMailer) {
-            $result .= $this->headerLine(
-                'X-Mailer',
-                'PHPMailer ' . self::VERSION . ' (https://github.com/PHPMailer/PHPMailer)'
-            );
-        } else {
-            $myXmailer = trim($this->XMailer);
-            if ($myXmailer) {
-                $result .= $this->headerLine('X-Mailer', $myXmailer);
-            }
-        }
-
-        if ('' !== $this->ConfirmReadingTo) {
-            $result .= $this->headerLine('Disposition-Notification-To', '<' . $this->ConfirmReadingTo . '>');
-        }
-
-        // Add custom headers
-        foreach ($this->CustomHeader as $header) {
-            $result .= $this->headerLine(
-                trim($header[0]),
-                $this->encodeHeader(trim($header[1]))
-            );
-        }
-        if (!$this->sign_key_file) {
-            $result .= $this->headerLine('MIME-Version', '1.0');
-            $result .= $this->getMailMIME();
-        }
-
-        return $result;
-    }
-
-    /**
-     * Get the message MIME type headers.
-     *
-     * @return string
-     */
-    public function getMailMIME()
-    {
-        $result = '';
-        $ismultipart = true;
-        switch ($this->message_type) {
-            case 'inline':
-                $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';');
-                $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"');
-                break;
-            case 'attach':
-            case 'inline_attach':
-            case 'alt_attach':
-            case 'alt_inline_attach':
-                $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_MIXED . ';');
-                $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"');
-                break;
-            case 'alt':
-            case 'alt_inline':
-                $result .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';');
-                $result .= $this->textLine(' boundary="' . $this->boundary[1] . '"');
-                break;
-            default:
-                // Catches case 'plain': and case '':
-                $result .= $this->textLine('Content-Type: ' . $this->ContentType . '; charset=' . $this->CharSet);
-                $ismultipart = false;
-                break;
-        }
-        // RFC1341 part 5 says 7bit is assumed if not specified
-        if (static::ENCODING_7BIT !== $this->Encoding) {
-            // RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE
-            if ($ismultipart) {
-                if (static::ENCODING_8BIT === $this->Encoding) {
-                    $result .= $this->headerLine('Content-Transfer-Encoding', static::ENCODING_8BIT);
-                }
-                // The only remaining alternatives are quoted-printable and base64, which are both 7bit compatible
-            } else {
-                $result .= $this->headerLine('Content-Transfer-Encoding', $this->Encoding);
-            }
-        }
-
-        if ('mail' !== $this->Mailer) {
-//            $result .= static::$LE;
-        }
-
-        return $result;
-    }
-
-    /**
-     * Returns the whole MIME message.
-     * Includes complete headers and body.
-     * Only valid post preSend().
-     *
-     * @see PHPMailer::preSend()
-     *
-     * @return string
-     */
-    public function getSentMIMEMessage()
-    {
-        return static::stripTrailingWSP($this->MIMEHeader . $this->mailHeader) .
-            static::$LE . static::$LE . $this->MIMEBody;
-    }
-
-    /**
-     * Create a unique ID to use for boundaries.
-     *
-     * @return string
-     */
-    protected function generateId()
-    {
-        $len = 32; //32 bytes = 256 bits
-        $bytes = '';
-        if (function_exists('random_bytes')) {
-            try {
-                $bytes = random_bytes($len);
-            } catch (\Exception $e) {
-                //Do nothing
-            }
-        } elseif (function_exists('openssl_random_pseudo_bytes')) {
-            /** @noinspection CryptographicallySecureRandomnessInspection */
-            $bytes = openssl_random_pseudo_bytes($len);
-        }
-        if ($bytes === '') {
-            //We failed to produce a proper random string, so make do.
-            //Use a hash to force the length to the same as the other methods
-            $bytes = hash('sha256', uniqid((string) mt_rand(), true), true);
-        }
-
-        //We don't care about messing up base64 format here, just want a random string
-        return str_replace(['=', '+', '/'], '', base64_encode(hash('sha256', $bytes, true)));
-    }
-
-    /**
-     * Assemble the message body.
-     * Returns an empty string on failure.
-     *
-     * @throws Exception
-     *
-     * @return string The assembled message body
-     */
-    public function createBody()
-    {
-        $body = '';
-        //Create unique IDs and preset boundaries
-        $this->uniqueid = $this->generateId();
-        $this->boundary[1] = 'b1_' . $this->uniqueid;
-        $this->boundary[2] = 'b2_' . $this->uniqueid;
-        $this->boundary[3] = 'b3_' . $this->uniqueid;
-
-        if ($this->sign_key_file) {
-            $body .= $this->getMailMIME() . static::$LE;
-        }
-
-        $this->setWordWrap();
-
-        $bodyEncoding = $this->Encoding;
-        $bodyCharSet = $this->CharSet;
-        //Can we do a 7-bit downgrade?
-        if (static::ENCODING_8BIT === $bodyEncoding && !$this->has8bitChars($this->Body)) {
-            $bodyEncoding = static::ENCODING_7BIT;
-            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
-            $bodyCharSet = static::CHARSET_ASCII;
-        }
-        //If lines are too long, and we're not already using an encoding that will shorten them,
-        //change to quoted-printable transfer encoding for the body part only
-        if (static::ENCODING_BASE64 !== $this->Encoding && static::hasLineLongerThanMax($this->Body)) {
-            $bodyEncoding = static::ENCODING_QUOTED_PRINTABLE;
-        }
-
-        $altBodyEncoding = $this->Encoding;
-        $altBodyCharSet = $this->CharSet;
-        //Can we do a 7-bit downgrade?
-        if (static::ENCODING_8BIT === $altBodyEncoding && !$this->has8bitChars($this->AltBody)) {
-            $altBodyEncoding = static::ENCODING_7BIT;
-            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
-            $altBodyCharSet = static::CHARSET_ASCII;
-        }
-        //If lines are too long, and we're not already using an encoding that will shorten them,
-        //change to quoted-printable transfer encoding for the alt body part only
-        if (static::ENCODING_BASE64 !== $altBodyEncoding && static::hasLineLongerThanMax($this->AltBody)) {
-            $altBodyEncoding = static::ENCODING_QUOTED_PRINTABLE;
-        }
-        //Use this as a preamble in all multipart message types
-        $mimepre = 'This is a multi-part message in MIME format.' . static::$LE . static::$LE;
-        switch ($this->message_type) {
-            case 'inline':
-                $body .= $mimepre;
-                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[1]);
-                break;
-            case 'attach':
-                $body .= $mimepre;
-                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            case 'inline_attach':
-                $body .= $mimepre;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';');
-                $body .= $this->textLine(' boundary="' . $this->boundary[2] . '";');
-                $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, '', $bodyEncoding);
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            case 'alt':
-                $body .= $mimepre;
-                $body .= $this->getBoundary(
-                    $this->boundary[1],
-                    $altBodyCharSet,
-                    static::CONTENT_TYPE_PLAINTEXT,
-                    $altBodyEncoding
-                );
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->getBoundary(
-                    $this->boundary[1],
-                    $bodyCharSet,
-                    static::CONTENT_TYPE_TEXT_HTML,
-                    $bodyEncoding
-                );
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                if (!empty($this->Ical)) {
-                    $method = static::ICAL_METHOD_REQUEST;
-                    foreach (static::$IcalMethods as $imethod) {
-                        if (stripos($this->Ical, 'METHOD:' . $imethod) !== false) {
-                            $method = $imethod;
-                            break;
-                        }
-                    }
-                    $body .= $this->getBoundary(
-                        $this->boundary[1],
-                        '',
-                        static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method,
-                        ''
-                    );
-                    $body .= $this->encodeString($this->Ical, $this->Encoding);
-                    $body .= static::$LE;
-                }
-                $body .= $this->endBoundary($this->boundary[1]);
-                break;
-            case 'alt_inline':
-                $body .= $mimepre;
-                $body .= $this->getBoundary(
-                    $this->boundary[1],
-                    $altBodyCharSet,
-                    static::CONTENT_TYPE_PLAINTEXT,
-                    $altBodyEncoding
-                );
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';');
-                $body .= $this->textLine(' boundary="' . $this->boundary[2] . '";');
-                $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary(
-                    $this->boundary[2],
-                    $bodyCharSet,
-                    static::CONTENT_TYPE_TEXT_HTML,
-                    $bodyEncoding
-                );
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->endBoundary($this->boundary[1]);
-                break;
-            case 'alt_attach':
-                $body .= $mimepre;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';');
-                $body .= $this->textLine(' boundary="' . $this->boundary[2] . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary(
-                    $this->boundary[2],
-                    $altBodyCharSet,
-                    static::CONTENT_TYPE_PLAINTEXT,
-                    $altBodyEncoding
-                );
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->getBoundary(
-                    $this->boundary[2],
-                    $bodyCharSet,
-                    static::CONTENT_TYPE_TEXT_HTML,
-                    $bodyEncoding
-                );
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                if (!empty($this->Ical)) {
-                    $method = static::ICAL_METHOD_REQUEST;
-                    foreach (static::$IcalMethods as $imethod) {
-                        if (stripos($this->Ical, 'METHOD:' . $imethod) !== false) {
-                            $method = $imethod;
-                            break;
-                        }
-                    }
-                    $body .= $this->getBoundary(
-                        $this->boundary[2],
-                        '',
-                        static::CONTENT_TYPE_TEXT_CALENDAR . '; method=' . $method,
-                        ''
-                    );
-                    $body .= $this->encodeString($this->Ical, $this->Encoding);
-                }
-                $body .= $this->endBoundary($this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            case 'alt_inline_attach':
-                $body .= $mimepre;
-                $body .= $this->textLine('--' . $this->boundary[1]);
-                $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_ALTERNATIVE . ';');
-                $body .= $this->textLine(' boundary="' . $this->boundary[2] . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary(
-                    $this->boundary[2],
-                    $altBodyCharSet,
-                    static::CONTENT_TYPE_PLAINTEXT,
-                    $altBodyEncoding
-                );
-                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->textLine('--' . $this->boundary[2]);
-                $body .= $this->headerLine('Content-Type', static::CONTENT_TYPE_MULTIPART_RELATED . ';');
-                $body .= $this->textLine(' boundary="' . $this->boundary[3] . '";');
-                $body .= $this->textLine(' type="' . static::CONTENT_TYPE_TEXT_HTML . '"');
-                $body .= static::$LE;
-                $body .= $this->getBoundary(
-                    $this->boundary[3],
-                    $bodyCharSet,
-                    static::CONTENT_TYPE_TEXT_HTML,
-                    $bodyEncoding
-                );
-                $body .= $this->encodeString($this->Body, $bodyEncoding);
-                $body .= static::$LE;
-                $body .= $this->attachAll('inline', $this->boundary[3]);
-                $body .= static::$LE;
-                $body .= $this->endBoundary($this->boundary[2]);
-                $body .= static::$LE;
-                $body .= $this->attachAll('attachment', $this->boundary[1]);
-                break;
-            default:
-                // Catch case 'plain' and case '', applies to simple `text/plain` and `text/html` body content types
-                //Reset the `Encoding` property in case we changed it for line length reasons
-                $this->Encoding = $bodyEncoding;
-                $body .= $this->encodeString($this->Body, $this->Encoding);
-                break;
-        }
-
-        if ($this->isError()) {
-            $body = '';
-            if ($this->exceptions) {
-                throw new Exception($this->lang('empty_message'), self::STOP_CRITICAL);
-            }
-        } elseif ($this->sign_key_file) {
-            try {
-                if (!defined('PKCS7_TEXT')) {
-                    throw new Exception($this->lang('extension_missing') . 'openssl');
-                }
-
-                $file = tempnam(sys_get_temp_dir(), 'srcsign');
-                $signed = tempnam(sys_get_temp_dir(), 'mailsign');
-                file_put_contents($file, $body);
-
-                //Workaround for PHP bug https://bugs.php.net/bug.php?id=69197
-                if (empty($this->sign_extracerts_file)) {
-                    $sign = @openssl_pkcs7_sign(
-                        $file,
-                        $signed,
-                        'file://' . realpath($this->sign_cert_file),
-                        ['file://' . realpath($this->sign_key_file), $this->sign_key_pass],
-                        []
-                    );
-                } else {
-                    $sign = @openssl_pkcs7_sign(
-                        $file,
-                        $signed,
-                        'file://' . realpath($this->sign_cert_file),
-                        ['file://' . realpath($this->sign_key_file), $this->sign_key_pass],
-                        [],
-                        PKCS7_DETACHED,
-                        $this->sign_extracerts_file
-                    );
-                }
-
-                @unlink($file);
-                if ($sign) {
-                    $body = file_get_contents($signed);
-                    @unlink($signed);
-                    //The message returned by openssl contains both headers and body, so need to split them up
-                    $parts = explode("\n\n", $body, 2);
-                    $this->MIMEHeader .= $parts[0] . static::$LE . static::$LE;
-                    $body = $parts[1];
-                } else {
-                    @unlink($signed);
-                    throw new Exception($this->lang('signing') . openssl_error_string());
-                }
-            } catch (Exception $exc) {
-                $body = '';
-                if ($this->exceptions) {
-                    throw $exc;
-                }
-            }
-        }
-
-        return $body;
-    }
-
-    /**
-     * Return the start of a message boundary.
-     *
-     * @param string $boundary
-     * @param string $charSet
-     * @param string $contentType
-     * @param string $encoding
-     *
-     * @return string
-     */
-    protected function getBoundary($boundary, $charSet, $contentType, $encoding)
-    {
-        $result = '';
-        if ('' === $charSet) {
-            $charSet = $this->CharSet;
-        }
-        if ('' === $contentType) {
-            $contentType = $this->ContentType;
-        }
-        if ('' === $encoding) {
-            $encoding = $this->Encoding;
-        }
-        $result .= $this->textLine('--' . $boundary);
-        $result .= sprintf('Content-Type: %s; charset=%s', $contentType, $charSet);
-        $result .= static::$LE;
-        // RFC1341 part 5 says 7bit is assumed if not specified
-        if (static::ENCODING_7BIT !== $encoding) {
-            $result .= $this->headerLine('Content-Transfer-Encoding', $encoding);
-        }
-        $result .= static::$LE;
-
-        return $result;
-    }
-
-    /**
-     * Return the end of a message boundary.
-     *
-     * @param string $boundary
-     *
-     * @return string
-     */
-    protected function endBoundary($boundary)
-    {
-        return static::$LE . '--' . $boundary . '--' . static::$LE;
-    }
-
-    /**
-     * Set the message type.
-     * PHPMailer only supports some preset message types, not arbitrary MIME structures.
-     */
-    protected function setMessageType()
-    {
-        $type = [];
-        if ($this->alternativeExists()) {
-            $type[] = 'alt';
-        }
-        if ($this->inlineImageExists()) {
-            $type[] = 'inline';
-        }
-        if ($this->attachmentExists()) {
-            $type[] = 'attach';
-        }
-        $this->message_type = implode('_', $type);
-        if ('' === $this->message_type) {
-            //The 'plain' message_type refers to the message having a single body element, not that it is plain-text
-            $this->message_type = 'plain';
-        }
-    }
-
-    /**
-     * Format a header line.
-     *
-     * @param string     $name
-     * @param string|int $value
-     *
-     * @return string
-     */
-    public function headerLine($name, $value)
-    {
-        return $name . ': ' . $value . static::$LE;
-    }
-
-    /**
-     * Return a formatted mail line.
-     *
-     * @param string $value
-     *
-     * @return string
-     */
-    public function textLine($value)
-    {
-        return $value . static::$LE;
-    }
-
-    /**
-     * Add an attachment from a path on the filesystem.
-     * Never use a user-supplied path to a file!
-     * Returns false if the file could not be found or read.
-     * Explicitly *does not* support passing URLs; PHPMailer is not an HTTP client.
-     * If you need to do that, fetch the resource yourself and pass it in via a local file or string.
-     *
-     * @param string $path        Path to the attachment
-     * @param string $name        Overrides the attachment name
-     * @param string $encoding    File encoding (see $Encoding)
-     * @param string $type        File extension (MIME) type
-     * @param string $disposition Disposition to use
-     *
-     * @throws Exception
-     *
-     * @return bool
-     */
-    public function addAttachment(
-        $path,
-        $name = '',
-        $encoding = self::ENCODING_BASE64,
-        $type = '',
-        $disposition = 'attachment'
-    ) {
-        try {
-            if (!static::isPermittedPath($path) || !@is_file($path) || !is_readable($path)) {
-                throw new Exception($this->lang('file_access') . $path, self::STOP_CONTINUE);
-            }
-
-            // If a MIME type is not specified, try to work it out from the file name
-            if ('' === $type) {
-                $type = static::filenameToType($path);
-            }
-
-            $filename = (string) static::mb_pathinfo($path, PATHINFO_BASENAME);
-            if ('' === $name) {
-                $name = $filename;
-            }
-            if (!$this->validateEncoding($encoding)) {
-                throw new Exception($this->lang('encoding') . $encoding);
-            }
-
-            $this->attachment[] = [
-                0 => $path,
-                1 => $filename,
-                2 => $name,
-                3 => $encoding,
-                4 => $type,
-                5 => false, // isStringAttachment
-                6 => $disposition,
-                7 => $name,
-            ];
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Return the array of attachments.
-     *
-     * @return array
-     */
-    public function getAttachments()
-    {
-        return $this->attachment;
-    }
-
-    /**
-     * Attach all file, string, and binary attachments to the message.
-     * Returns an empty string on failure.
-     *
-     * @param string $disposition_type
-     * @param string $boundary
-     *
-     * @throws Exception
-     *
-     * @return string
-     */
-    protected function attachAll($disposition_type, $boundary)
-    {
-        // Return text of body
-        $mime = [];
-        $cidUniq = [];
-        $incl = [];
-
-        // Add all attachments
-        foreach ($this->attachment as $attachment) {
-            // Check if it is a valid disposition_filter
-            if ($attachment[6] === $disposition_type) {
-                // Check for string attachment
-                $string = '';
-                $path = '';
-                $bString = $attachment[5];
-                if ($bString) {
-                    $string = $attachment[0];
-                } else {
-                    $path = $attachment[0];
-                }
-
-                $inclhash = hash('sha256', serialize($attachment));
-                if (in_array($inclhash, $incl, true)) {
-                    continue;
-                }
-                $incl[] = $inclhash;
-                $name = $attachment[2];
-                $encoding = $attachment[3];
-                $type = $attachment[4];
-                $disposition = $attachment[6];
-                $cid = $attachment[7];
-                if ('inline' === $disposition && array_key_exists($cid, $cidUniq)) {
-                    continue;
-                }
-                $cidUniq[$cid] = true;
-
-                $mime[] = sprintf('--%s%s', $boundary, static::$LE);
-                //Only include a filename property if we have one
-                if (!empty($name)) {
-                    $mime[] = sprintf(
-                        'Content-Type: %s; name=%s%s',
-                        $type,
-                        static::quotedString($this->encodeHeader($this->secureHeader($name))),
-                        static::$LE
-                    );
-                } else {
-                    $mime[] = sprintf(
-                        'Content-Type: %s%s',
-                        $type,
-                        static::$LE
-                    );
-                }
-                // RFC1341 part 5 says 7bit is assumed if not specified
-                if (static::ENCODING_7BIT !== $encoding) {
-                    $mime[] = sprintf('Content-Transfer-Encoding: %s%s', $encoding, static::$LE);
-                }
-
-                //Only set Content-IDs on inline attachments
-                if ((string) $cid !== '' && $disposition === 'inline') {
-                    $mime[] = 'Content-ID: <' . $this->encodeHeader($this->secureHeader($cid)) . '>' . static::$LE;
-                }
-
-                // Allow for bypassing the Content-Disposition header
-                if (!empty($disposition)) {
-                    $encoded_name = $this->encodeHeader($this->secureHeader($name));
-                    if (!empty($encoded_name)) {
-                        $mime[] = sprintf(
-                            'Content-Disposition: %s; filename=%s%s',
-                            $disposition,
-                            static::quotedString($encoded_name),
-                            static::$LE . static::$LE
-                        );
-                    } else {
-                        $mime[] = sprintf(
-                            'Content-Disposition: %s%s',
-                            $disposition,
-                            static::$LE . static::$LE
-                        );
-                    }
-                } else {
-                    $mime[] = static::$LE;
-                }
-
-                // Encode as string attachment
-                if ($bString) {
-                    $mime[] = $this->encodeString($string, $encoding);
-                } else {
-                    $mime[] = $this->encodeFile($path, $encoding);
-                }
-                if ($this->isError()) {
-                    return '';
-                }
-                $mime[] = static::$LE;
-            }
-        }
-
-        $mime[] = sprintf('--%s--%s', $boundary, static::$LE);
-
-        return implode('', $mime);
-    }
-
-    /**
-     * Encode a file attachment in requested format.
-     * Returns an empty string on failure.
-     *
-     * @param string $path     The full path to the file
-     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
-     *
-     * @return string
-     */
-    protected function encodeFile($path, $encoding = self::ENCODING_BASE64)
-    {
-        try {
-            if (!static::isPermittedPath($path) || !file_exists($path) || !is_readable($path)) {
-                throw new Exception($this->lang('file_open') . $path, self::STOP_CONTINUE);
-            }
-            $file_buffer = file_get_contents($path);
-            if (false === $file_buffer) {
-                throw new Exception($this->lang('file_open') . $path, self::STOP_CONTINUE);
-            }
-            $file_buffer = $this->encodeString($file_buffer, $encoding);
-
-            return $file_buffer;
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return '';
-        }
-    }
-
-    /**
-     * Encode a string in requested format.
-     * Returns an empty string on failure.
-     *
-     * @param string $str      The text to encode
-     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
-     *
-     * @throws Exception
-     *
-     * @return string
-     */
-    public function encodeString($str, $encoding = self::ENCODING_BASE64)
-    {
-        $encoded = '';
-        switch (strtolower($encoding)) {
-            case static::ENCODING_BASE64:
-                $encoded = chunk_split(
-                    base64_encode($str),
-                    static::STD_LINE_LENGTH,
-                    static::$LE
-                );
-                break;
-            case static::ENCODING_7BIT:
-            case static::ENCODING_8BIT:
-                $encoded = static::normalizeBreaks($str);
-                // Make sure it ends with a line break
-                if (substr($encoded, -(strlen(static::$LE))) !== static::$LE) {
-                    $encoded .= static::$LE;
-                }
-                break;
-            case static::ENCODING_BINARY:
-                $encoded = $str;
-                break;
-            case static::ENCODING_QUOTED_PRINTABLE:
-                $encoded = $this->encodeQP($str);
-                break;
-            default:
-                $this->setError($this->lang('encoding') . $encoding);
-                if ($this->exceptions) {
-                    throw new Exception($this->lang('encoding') . $encoding);
-                }
-                break;
-        }
-
-        return $encoded;
-    }
-
-    /**
-     * Encode a header value (not including its label) optimally.
-     * Picks shortest of Q, B, or none. Result includes folding if needed.
-     * See RFC822 definitions for phrase, comment and text positions.
-     *
-     * @param string $str      The header value to encode
-     * @param string $position What context the string will be used in
-     *
-     * @return string
-     */
-    public function encodeHeader($str, $position = 'text')
-    {
-        $matchcount = 0;
-        switch (strtolower($position)) {
-            case 'phrase':
-                if (!preg_match('/[\200-\377]/', $str)) {
-                    // Can't use addslashes as we don't know the value of magic_quotes_sybase
-                    $encoded = addcslashes($str, "\0..\37\177\\\"");
-                    if (($str === $encoded) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str)) {
-                        return $encoded;
-                    }
-
-                    return "\"$encoded\"";
-                }
-                $matchcount = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
-                break;
-            /* @noinspection PhpMissingBreakStatementInspection */
-            case 'comment':
-                $matchcount = preg_match_all('/[()"]/', $str, $matches);
-            //fallthrough
-            case 'text':
-            default:
-                $matchcount += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
-                break;
-        }
-
-        if ($this->has8bitChars($str)) {
-            $charset = $this->CharSet;
-        } else {
-            $charset = static::CHARSET_ASCII;
-        }
-
-        // Q/B encoding adds 8 chars and the charset ("` =?<charset>?[QB]?<content>?=`").
-        $overhead = 8 + strlen($charset);
-
-        if ('mail' === $this->Mailer) {
-            $maxlen = static::MAIL_MAX_LINE_LENGTH - $overhead;
-        } else {
-            $maxlen = static::MAX_LINE_LENGTH - $overhead;
-        }
-
-        // Select the encoding that produces the shortest output and/or prevents corruption.
-        if ($matchcount > strlen($str) / 3) {
-            // More than 1/3 of the content needs encoding, use B-encode.
-            $encoding = 'B';
-        } elseif ($matchcount > 0) {
-            // Less than 1/3 of the content needs encoding, use Q-encode.
-            $encoding = 'Q';
-        } elseif (strlen($str) > $maxlen) {
-            // No encoding needed, but value exceeds max line length, use Q-encode to prevent corruption.
-            $encoding = 'Q';
-        } else {
-            // No reformatting needed
-            $encoding = false;
-        }
-
-        switch ($encoding) {
-            case 'B':
-                if ($this->hasMultiBytes($str)) {
-                    // Use a custom function which correctly encodes and wraps long
-                    // multibyte strings without breaking lines within a character
-                    $encoded = $this->base64EncodeWrapMB($str, "\n");
-                } else {
-                    $encoded = base64_encode($str);
-                    $maxlen -= $maxlen % 4;
-                    $encoded = trim(chunk_split($encoded, $maxlen, "\n"));
-                }
-                $encoded = preg_replace('/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded);
-                break;
-            case 'Q':
-                $encoded = $this->encodeQ($str, $position);
-                $encoded = $this->wrapText($encoded, $maxlen, true);
-                $encoded = str_replace('=' . static::$LE, "\n", trim($encoded));
-                $encoded = preg_replace('/^(.*)$/m', ' =?' . $charset . "?$encoding?\\1?=", $encoded);
-                break;
-            default:
-                return $str;
-        }
-
-        return trim(static::normalizeBreaks($encoded));
-    }
-
-    /**
-     * Check if a string contains multi-byte characters.
-     *
-     * @param string $str multi-byte text to wrap encode
-     *
-     * @return bool
-     */
-    public function hasMultiBytes($str)
-    {
-        if (function_exists('mb_strlen')) {
-            return strlen($str) > mb_strlen($str, $this->CharSet);
-        }
-
-        // Assume no multibytes (we can't handle without mbstring functions anyway)
-        return false;
-    }
-
-    /**
-     * Does a string contain any 8-bit chars (in any charset)?
-     *
-     * @param string $text
-     *
-     * @return bool
-     */
-    public function has8bitChars($text)
-    {
-        return (bool) preg_match('/[\x80-\xFF]/', $text);
-    }
-
-    /**
-     * Encode and wrap long multibyte strings for mail headers
-     * without breaking lines within a character.
-     * Adapted from a function by paravoid.
-     *
-     * @see http://www.php.net/manual/en/function.mb-encode-mimeheader.php#60283
-     *
-     * @param string $str       multi-byte text to wrap encode
-     * @param string $linebreak string to use as linefeed/end-of-line
-     *
-     * @return string
-     */
-    public function base64EncodeWrapMB($str, $linebreak = null)
-    {
-        $start = '=?' . $this->CharSet . '?B?';
-        $end = '?=';
-        $encoded = '';
-        if (null === $linebreak) {
-            $linebreak = static::$LE;
-        }
-
-        $mb_length = mb_strlen($str, $this->CharSet);
-        // Each line must have length <= 75, including $start and $end
-        $length = 75 - strlen($start) - strlen($end);
-        // Average multi-byte ratio
-        $ratio = $mb_length / strlen($str);
-        // Base64 has a 4:3 ratio
-        $avgLength = floor($length * $ratio * .75);
-
-        $offset = 0;
-        for ($i = 0; $i < $mb_length; $i += $offset) {
-            $lookBack = 0;
-            do {
-                $offset = $avgLength - $lookBack;
-                $chunk = mb_substr($str, $i, $offset, $this->CharSet);
-                $chunk = base64_encode($chunk);
-                ++$lookBack;
-            } while (strlen($chunk) > $length);
-            $encoded .= $chunk . $linebreak;
-        }
-
-        // Chomp the last linefeed
-        return substr($encoded, 0, -strlen($linebreak));
-    }
-
-    /**
-     * Encode a string in quoted-printable format.
-     * According to RFC2045 section 6.7.
-     *
-     * @param string $string The text to encode
-     *
-     * @return string
-     */
-    public function encodeQP($string)
-    {
-        return static::normalizeBreaks(quoted_printable_encode($string));
-    }
-
-    /**
-     * Encode a string using Q encoding.
-     *
-     * @see http://tools.ietf.org/html/rfc2047#section-4.2
-     *
-     * @param string $str      the text to encode
-     * @param string $position Where the text is going to be used, see the RFC for what that means
-     *
-     * @return string
-     */
-    public function encodeQ($str, $position = 'text')
-    {
-        // There should not be any EOL in the string
-        $pattern = '';
-        $encoded = str_replace(["\r", "\n"], '', $str);
-        switch (strtolower($position)) {
-            case 'phrase':
-                // RFC 2047 section 5.3
-                $pattern = '^A-Za-z0-9!*+\/ -';
-                break;
-            /*
-             * RFC 2047 section 5.2.
-             * Build $pattern without including delimiters and []
-             */
-            /* @noinspection PhpMissingBreakStatementInspection */
-            case 'comment':
-                $pattern = '\(\)"';
-            /* Intentional fall through */
-            case 'text':
-            default:
-                // RFC 2047 section 5.1
-                // Replace every high ascii, control, =, ? and _ characters
-                $pattern = '\000-\011\013\014\016-\037\075\077\137\177-\377' . $pattern;
-                break;
-        }
-        $matches = [];
-        if (preg_match_all("/[{$pattern}]/", $encoded, $matches)) {
-            // If the string contains an '=', make sure it's the first thing we replace
-            // so as to avoid double-encoding
-            $eqkey = array_search('=', $matches[0], true);
-            if (false !== $eqkey) {
-                unset($matches[0][$eqkey]);
-                array_unshift($matches[0], '=');
-            }
-            foreach (array_unique($matches[0]) as $char) {
-                $encoded = str_replace($char, '=' . sprintf('%02X', ord($char)), $encoded);
-            }
-        }
-        // Replace spaces with _ (more readable than =20)
-        // RFC 2047 section 4.2(2)
-        return str_replace(' ', '_', $encoded);
-    }
-
-    /**
-     * Add a string or binary attachment (non-filesystem).
-     * This method can be used to attach ascii or binary data,
-     * such as a BLOB record from a database.
-     *
-     * @param string $string      String attachment data
-     * @param string $filename    Name of the attachment
-     * @param string $encoding    File encoding (see $Encoding)
-     * @param string $type        File extension (MIME) type
-     * @param string $disposition Disposition to use
-     *
-     * @throws Exception
-     *
-     * @return bool True on successfully adding an attachment
-     */
-    public function addStringAttachment(
-        $string,
-        $filename,
-        $encoding = self::ENCODING_BASE64,
-        $type = '',
-        $disposition = 'attachment'
-    ) {
-        try {
-            // If a MIME type is not specified, try to work it out from the file name
-            if ('' === $type) {
-                $type = static::filenameToType($filename);
-            }
-
-            if (!$this->validateEncoding($encoding)) {
-                throw new Exception($this->lang('encoding') . $encoding);
-            }
-
-            // Append to $attachment array
-            $this->attachment[] = [
-                0 => $string,
-                1 => $filename,
-                2 => static::mb_pathinfo($filename, PATHINFO_BASENAME),
-                3 => $encoding,
-                4 => $type,
-                5 => true, // isStringAttachment
-                6 => $disposition,
-                7 => 0,
-            ];
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Add an embedded (inline) attachment from a file.
-     * This can include images, sounds, and just about any other document type.
-     * These differ from 'regular' attachments in that they are intended to be
-     * displayed inline with the message, not just attached for download.
-     * This is used in HTML messages that embed the images
-     * the HTML refers to using the $cid value.
-     * Never use a user-supplied path to a file!
-     *
-     * @param string $path        Path to the attachment
-     * @param string $cid         Content ID of the attachment; Use this to reference
-     *                            the content when using an embedded image in HTML
-     * @param string $name        Overrides the attachment name
-     * @param string $encoding    File encoding (see $Encoding)
-     * @param string $type        File MIME type
-     * @param string $disposition Disposition to use
-     *
-     * @throws Exception
-     *
-     * @return bool True on successfully adding an attachment
-     */
-    public function addEmbeddedImage(
-        $path,
-        $cid,
-        $name = '',
-        $encoding = self::ENCODING_BASE64,
-        $type = '',
-        $disposition = 'inline'
-    ) {
-        try {
-            if (!static::isPermittedPath($path) || !@is_file($path) || !is_readable($path)) {
-                throw new Exception($this->lang('file_access') . $path, self::STOP_CONTINUE);
-            }
-
-            // If a MIME type is not specified, try to work it out from the file name
-            if ('' === $type) {
-                $type = static::filenameToType($path);
-            }
-
-            if (!$this->validateEncoding($encoding)) {
-                throw new Exception($this->lang('encoding') . $encoding);
-            }
-
-            $filename = (string) static::mb_pathinfo($path, PATHINFO_BASENAME);
-            if ('' === $name) {
-                $name = $filename;
-            }
-
-            // Append to $attachment array
-            $this->attachment[] = [
-                0 => $path,
-                1 => $filename,
-                2 => $name,
-                3 => $encoding,
-                4 => $type,
-                5 => false, // isStringAttachment
-                6 => $disposition,
-                7 => $cid,
-            ];
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Add an embedded stringified attachment.
-     * This can include images, sounds, and just about any other document type.
-     * If your filename doesn't contain an extension, be sure to set the $type to an appropriate MIME type.
-     *
-     * @param string $string      The attachment binary data
-     * @param string $cid         Content ID of the attachment; Use this to reference
-     *                            the content when using an embedded image in HTML
-     * @param string $name        A filename for the attachment. If this contains an extension,
-     *                            PHPMailer will attempt to set a MIME type for the attachment.
-     *                            For example 'file.jpg' would get an 'image/jpeg' MIME type.
-     * @param string $encoding    File encoding (see $Encoding), defaults to 'base64'
-     * @param string $type        MIME type - will be used in preference to any automatically derived type
-     * @param string $disposition Disposition to use
-     *
-     * @throws Exception
-     *
-     * @return bool True on successfully adding an attachment
-     */
-    public function addStringEmbeddedImage(
-        $string,
-        $cid,
-        $name = '',
-        $encoding = self::ENCODING_BASE64,
-        $type = '',
-        $disposition = 'inline'
-    ) {
-        try {
-            // If a MIME type is not specified, try to work it out from the name
-            if ('' === $type && !empty($name)) {
-                $type = static::filenameToType($name);
-            }
-
-            if (!$this->validateEncoding($encoding)) {
-                throw new Exception($this->lang('encoding') . $encoding);
-            }
-
-            // Append to $attachment array
-            $this->attachment[] = [
-                0 => $string,
-                1 => $name,
-                2 => $name,
-                3 => $encoding,
-                4 => $type,
-                5 => true, // isStringAttachment
-                6 => $disposition,
-                7 => $cid,
-            ];
-        } catch (Exception $exc) {
-            $this->setError($exc->getMessage());
-            $this->edebug($exc->getMessage());
-            if ($this->exceptions) {
-                throw $exc;
-            }
-
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Validate encodings.
-     *
-     * @param string $encoding
-     *
-     * @return bool
-     */
-    protected function validateEncoding($encoding)
-    {
-        return in_array(
-            $encoding,
-            [
-                self::ENCODING_7BIT,
-                self::ENCODING_QUOTED_PRINTABLE,
-                self::ENCODING_BASE64,
-                self::ENCODING_8BIT,
-                self::ENCODING_BINARY,
-            ],
-            true
-        );
-    }
-
-    /**
-     * Check if an embedded attachment is present with this cid.
-     *
-     * @param string $cid
-     *
-     * @return bool
-     */
-    protected function cidExists($cid)
-    {
-        foreach ($this->attachment as $attachment) {
-            if ('inline' === $attachment[6] && $cid === $attachment[7]) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Check if an inline attachment is present.
-     *
-     * @return bool
-     */
-    public function inlineImageExists()
-    {
-        foreach ($this->attachment as $attachment) {
-            if ('inline' === $attachment[6]) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Check if an attachment (non-inline) is present.
-     *
-     * @return bool
-     */
-    public function attachmentExists()
-    {
-        foreach ($this->attachment as $attachment) {
-            if ('attachment' === $attachment[6]) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Check if this message has an alternative body set.
-     *
-     * @return bool
-     */
-    public function alternativeExists()
-    {
-        return !empty($this->AltBody);
-    }
-
-    /**
-     * Clear queued addresses of given kind.
-     *
-     * @param string $kind 'to', 'cc', or 'bcc'
-     */
-    public function clearQueuedAddresses($kind)
-    {
-        $this->RecipientsQueue = array_filter(
-            $this->RecipientsQueue,
-            static function ($params) use ($kind) {
-                return $params[0] !== $kind;
-            }
-        );
-    }
-
-    /**
-     * Clear all To recipients.
-     */
-    public function clearAddresses()
-    {
-        foreach ($this->to as $to) {
-            unset($this->all_recipients[strtolower($to[0])]);
-        }
-        $this->to = [];
-        $this->clearQueuedAddresses('to');
-    }
-
-    /**
-     * Clear all CC recipients.
-     */
-    public function clearCCs()
-    {
-        foreach ($this->cc as $cc) {
-            unset($this->all_recipients[strtolower($cc[0])]);
-        }
-        $this->cc = [];
-        $this->clearQueuedAddresses('cc');
-    }
-
-    /**
-     * Clear all BCC recipients.
-     */
-    public function clearBCCs()
-    {
-        foreach ($this->bcc as $bcc) {
-            unset($this->all_recipients[strtolower($bcc[0])]);
-        }
-        $this->bcc = [];
-        $this->clearQueuedAddresses('bcc');
-    }
-
-    /**
-     * Clear all ReplyTo recipients.
-     */
-    public function clearReplyTos()
-    {
-        $this->ReplyTo = [];
-        $this->ReplyToQueue = [];
-    }
-
-    /**
-     * Clear all recipient types.
-     */
-    public function clearAllRecipients()
-    {
-        $this->to = [];
-        $this->cc = [];
-        $this->bcc = [];
-        $this->all_recipients = [];
-        $this->RecipientsQueue = [];
-    }
-
-    /**
-     * Clear all filesystem, string, and binary attachments.
-     */
-    public function clearAttachments()
-    {
-        $this->attachment = [];
-    }
-
-    /**
-     * Clear all custom headers.
-     */
-    public function clearCustomHeaders()
-    {
-        $this->CustomHeader = [];
-    }
-
-    /**
-     * Add an error message to the error container.
-     *
-     * @param string $msg
-     */
-    protected function setError($msg)
-    {
-        ++$this->error_count;
-        if ('smtp' === $this->Mailer && null !== $this->smtp) {
-            $lasterror = $this->smtp->getError();
-            if (!empty($lasterror['error'])) {
-                $msg .= $this->lang('smtp_error') . $lasterror['error'];
-                if (!empty($lasterror['detail'])) {
-                    $msg .= ' Detail: ' . $lasterror['detail'];
-                }
-                if (!empty($lasterror['smtp_code'])) {
-                    $msg .= ' SMTP code: ' . $lasterror['smtp_code'];
-                }
-                if (!empty($lasterror['smtp_code_ex'])) {
-                    $msg .= ' Additional SMTP info: ' . $lasterror['smtp_code_ex'];
-                }
-            }
-        }
-        $this->ErrorInfo = $msg;
-    }
-
-    /**
-     * Return an RFC 822 formatted date.
-     *
-     * @return string
-     */
-    public static function rfcDate()
-    {
-        // Set the time zone to whatever the default is to avoid 500 errors
-        // Will default to UTC if it's not set properly in php.ini
-        date_default_timezone_set(@date_default_timezone_get());
-
-        return date('D, j M Y H:i:s O');
-    }
-
-    /**
-     * Get the server hostname.
-     * Returns 'localhost.localdomain' if unknown.
-     *
-     * @return string
-     */
-    protected function serverHostname()
-    {
-        $result = '';
-        if (!empty($this->Hostname)) {
-            $result = $this->Hostname;
-        } elseif (isset($_SERVER) && array_key_exists('SERVER_NAME', $_SERVER)) {
-            $result = $_SERVER['SERVER_NAME'];
-        } elseif (function_exists('gethostname') && gethostname() !== false) {
-            $result = gethostname();
-        } elseif (php_uname('n') !== false) {
-            $result = php_uname('n');
-        }
-        if (!static::isValidHost($result)) {
-            return 'localhost.localdomain';
-        }
-
-        return $result;
-    }
-
-    /**
-     * Validate whether a string contains a valid value to use as a hostname or IP address.
-     * IPv6 addresses must include [], e.g. `[::1]`, not just `::1`.
-     *
-     * @param string $host The host name or IP address to check
-     *
-     * @return bool
-     */
-    public static function isValidHost($host)
-    {
-        //Simple syntax limits
-        if (empty($host)
-            || !is_string($host)
-            || strlen($host) > 256
-            || !preg_match('/^([a-zA-Z\d.-]*|\[[a-fA-F\d:]+])$/', $host)
-        ) {
-            return false;
-        }
-        //Looks like a bracketed IPv6 address
-        if (strlen($host) > 2 && substr($host, 0, 1) === '[' && substr($host, -1, 1) === ']') {
-            return filter_var(substr($host, 1, -1), FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) !== false;
-        }
-        //If removing all the dots results in a numeric string, it must be an IPv4 address.
-        //Need to check this first because otherwise things like `999.0.0.0` are considered valid host names
-        if (is_numeric(str_replace('.', '', $host))) {
-            //Is it a valid IPv4 address?
-            return filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4) !== false;
-        }
-        if (filter_var('http://' . $host, FILTER_VALIDATE_URL) !== false) {
-            //Is it a syntactically valid hostname?
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Get an error message in the current language.
-     *
-     * @param string $key
-     *
-     * @return string
-     */
-    protected function lang($key)
-    {
-        if (count($this->language) < 1) {
-            $this->setLanguage(); // set the default language
-        }
-
-        if (array_key_exists($key, $this->language)) {
-            if ('smtp_connect_failed' === $key) {
-                //Include a link to troubleshooting docs on SMTP connection failure
-                //this is by far the biggest cause of support questions
-                //but it's usually not PHPMailer's fault.
-                return $this->language[$key] . ' https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting';
-            }
-
-            return $this->language[$key];
-        }
-
-        //Return the key as a fallback
-        return $key;
-    }
-
-    /**
-     * Check if an error occurred.
-     *
-     * @return bool True if an error did occur
-     */
-    public function isError()
-    {
-        return $this->error_count > 0;
-    }
-
-    /**
-     * Add a custom header.
-     * $name value can be overloaded to contain
-     * both header name and value (name:value).
-     *
-     * @param string      $name  Custom header name
-     * @param string|null $value Header value
-     *
-     * @throws Exception
-     */
-    public function addCustomHeader($name, $value = null)
-    {
-        if (null === $value && strpos($name, ':') !== false) {
-            // Value passed in as name:value
-            list($name, $value) = explode(':', $name, 2);
-        }
-        $name = trim($name);
-        $value = trim($value);
-        //Ensure name is not empty, and that neither name nor value contain line breaks
-        if (empty($name) || strpbrk($name . $value, "\r\n") !== false) {
-            if ($this->exceptions) {
-                throw new Exception('Invalid header name or value');
-            }
-
-            return false;
-        }
-        $this->CustomHeader[] = [$name, $value];
-
-        return true;
-    }
-
-    /**
-     * Returns all custom headers.
-     *
-     * @return array
-     */
-    public function getCustomHeaders()
-    {
-        return $this->CustomHeader;
-    }
-
-    /**
-     * Create a message body from an HTML string.
-     * Automatically inlines images and creates a plain-text version by converting the HTML,
-     * overwriting any existing values in Body and AltBody.
-     * Do not source $message content from user input!
-     * $basedir is prepended when handling relative URLs, e.g. <img src="/images/a.png"> and must not be empty
-     * will look for an image file in $basedir/images/a.png and convert it to inline.
-     * If you don't provide a $basedir, relative paths will be left untouched (and thus probably break in email)
-     * Converts data-uri images into embedded attachments.
-     * If you don't want to apply these transformations to your HTML, just set Body and AltBody directly.
-     *
-     * @param string        $message  HTML message string
-     * @param string        $basedir  Absolute path to a base directory to prepend to relative paths to images
-     * @param bool|callable $advanced Whether to use the internal HTML to text converter
-     *                                or your own custom converter
-     * @return string The transformed message body
-     *
-     * @throws Exception
-     *
-     * @see PHPMailer::html2text()
-     */
-    public function msgHTML($message, $basedir = '', $advanced = false)
-    {
-        preg_match_all('/(?<!-)(src|background)=["\'](.*)["\']/Ui', $message, $images);
-        if (array_key_exists(2, $images)) {
-            if (strlen($basedir) > 1 && '/' !== substr($basedir, -1)) {
-                // Ensure $basedir has a trailing /
-                $basedir .= '/';
-            }
-            foreach ($images[2] as $imgindex => $url) {
-                // Convert data URIs into embedded images
-                //e.g. "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
-                $match = [];
-                if (preg_match('#^data:(image/(?:jpe?g|gif|png));?(base64)?,(.+)#', $url, $match)) {
-                    if (count($match) === 4 && static::ENCODING_BASE64 === $match[2]) {
-                        $data = base64_decode($match[3]);
-                    } elseif ('' === $match[2]) {
-                        $data = rawurldecode($match[3]);
-                    } else {
-                        //Not recognised so leave it alone
-                        continue;
-                    }
-                    //Hash the decoded data, not the URL, so that the same data-URI image used in multiple places
-                    //will only be embedded once, even if it used a different encoding
-                    $cid = substr(hash('sha256', $data), 0, 32) . '@phpmailer.0'; // RFC2392 S 2
-
-                    if (!$this->cidExists($cid)) {
-                        $this->addStringEmbeddedImage(
-                            $data,
-                            $cid,
-                            'embed' . $imgindex,
-                            static::ENCODING_BASE64,
-                            $match[1]
-                        );
-                    }
-                    $message = str_replace(
-                        $images[0][$imgindex],
-                        $images[1][$imgindex] . '="cid:' . $cid . '"',
-                        $message
-                    );
-                    continue;
-                }
-                if (// Only process relative URLs if a basedir is provided (i.e. no absolute local paths)
-                    !empty($basedir)
-                    // Ignore URLs containing parent dir traversal (..)
-                    && (strpos($url, '..') === false)
-                    // Do not change urls that are already inline images
-                    && 0 !== strpos($url, 'cid:')
-                    // Do not change absolute URLs, including anonymous protocol
-                    && !preg_match('#^[a-z][a-z0-9+.-]*:?//#i', $url)
-                ) {
-                    $filename = static::mb_pathinfo($url, PATHINFO_BASENAME);
-                    $directory = dirname($url);
-                    if ('.' === $directory) {
-                        $directory = '';
-                    }
-                    // RFC2392 S 2
-                    $cid = substr(hash('sha256', $url), 0, 32) . '@phpmailer.0';
-                    if (strlen($basedir) > 1 && '/' !== substr($basedir, -1)) {
-                        $basedir .= '/';
-                    }
-                    if (strlen($directory) > 1 && '/' !== substr($directory, -1)) {
-                        $directory .= '/';
-                    }
-                    if ($this->addEmbeddedImage(
-                        $basedir . $directory . $filename,
-                        $cid,
-                        $filename,
-                        static::ENCODING_BASE64,
-                        static::_mime_types((string) static::mb_pathinfo($filename, PATHINFO_EXTENSION))
-                    )
-                    ) {
-                        $message = preg_replace(
-                            '/' . $images[1][$imgindex] . '=["\']' . preg_quote($url, '/') . '["\']/Ui',
-                            $images[1][$imgindex] . '="cid:' . $cid . '"',
-                            $message
-                        );
-                    }
-                }
-            }
-        }
-        $this->isHTML();
-        // Convert all message body line breaks to LE, makes quoted-printable encoding work much better
-        $this->Body = static::normalizeBreaks($message);
-        $this->AltBody = static::normalizeBreaks($this->html2text($message, $advanced));
-        if (!$this->alternativeExists()) {
-            $this->AltBody = 'This is an HTML-only message. To view it, activate HTML in your email application.'
-                . static::$LE;
-        }
-
-        return $this->Body;
-    }
-
-    /**
-     * Convert an HTML string into plain text.
-     * This is used by msgHTML().
-     * Note - older versions of this function used a bundled advanced converter
-     * which was removed for license reasons in #232.
-     * Example usage:
-     *
-     * ```php
-     * // Use default conversion
-     * $plain = $mail->html2text($html);
-     * // Use your own custom converter
-     * $plain = $mail->html2text($html, function($html) {
-     *     $converter = new MyHtml2text($html);
-     *     return $converter->get_text();
-     * });
-     * ```
-     *
-     * @param string        $html     The HTML text to convert
-     * @param bool|callable $advanced Any boolean value to use the internal converter,
-     *                                or provide your own callable for custom conversion
-     *
-     * @return string
-     */
-    public function html2text($html, $advanced = false)
-    {
-        if (is_callable($advanced)) {
-            return call_user_func($advanced, $html);
-        }
-
-        return html_entity_decode(
-            trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/si', '', $html))),
-            ENT_QUOTES,
-            $this->CharSet
-        );
-    }
-
-    /**
-     * Get the MIME type for a file extension.
-     *
-     * @param string $ext File extension
-     *
-     * @return string MIME type of file
-     */
-    public static function _mime_types($ext = '')
-    {
-        $mimes = [
-            'xl' => 'application/excel',
-            'js' => 'application/javascript',
-            'hqx' => 'application/mac-binhex40',
-            'cpt' => 'application/mac-compactpro',
-            'bin' => 'application/macbinary',
-            'doc' => 'application/msword',
-            'word' => 'application/msword',
-            'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
-            'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
-            'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
-            'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
-            'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
-            'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
-            'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
-            'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
-            'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
-            'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
-            'class' => 'application/octet-stream',
-            'dll' => 'application/octet-stream',
-            'dms' => 'application/octet-stream',
-            'exe' => 'application/octet-stream',
-            'lha' => 'application/octet-stream',
-            'lzh' => 'application/octet-stream',
-            'psd' => 'application/octet-stream',
-            'sea' => 'application/octet-stream',
-            'so' => 'application/octet-stream',
-            'oda' => 'application/oda',
-            'pdf' => 'application/pdf',
-            'ai' => 'application/postscript',
-            'eps' => 'application/postscript',
-            'ps' => 'application/postscript',
-            'smi' => 'application/smil',
-            'smil' => 'application/smil',
-            'mif' => 'application/vnd.mif',
-            'xls' => 'application/vnd.ms-excel',
-            'ppt' => 'application/vnd.ms-powerpoint',
-            'wbxml' => 'application/vnd.wap.wbxml',
-            'wmlc' => 'application/vnd.wap.wmlc',
-            'dcr' => 'application/x-director',
-            'dir' => 'application/x-director',
-            'dxr' => 'application/x-director',
-            'dvi' => 'application/x-dvi',
-            'gtar' => 'application/x-gtar',
-            'php3' => 'application/x-httpd-php',
-            'php4' => 'application/x-httpd-php',
-            'php' => 'application/x-httpd-php',
-            'phtml' => 'application/x-httpd-php',
-            'phps' => 'application/x-httpd-php-source',
-            'swf' => 'application/x-shockwave-flash',
-            'sit' => 'application/x-stuffit',
-            'tar' => 'application/x-tar',
-            'tgz' => 'application/x-tar',
-            'xht' => 'application/xhtml+xml',
-            'xhtml' => 'application/xhtml+xml',
-            'zip' => 'application/zip',
-            'mid' => 'audio/midi',
-            'midi' => 'audio/midi',
-            'mp2' => 'audio/mpeg',
-            'mp3' => 'audio/mpeg',
-            'm4a' => 'audio/mp4',
-            'mpga' => 'audio/mpeg',
-            'aif' => 'audio/x-aiff',
-            'aifc' => 'audio/x-aiff',
-            'aiff' => 'audio/x-aiff',
-            'ram' => 'audio/x-pn-realaudio',
-            'rm' => 'audio/x-pn-realaudio',
-            'rpm' => 'audio/x-pn-realaudio-plugin',
-            'ra' => 'audio/x-realaudio',
-            'wav' => 'audio/x-wav',
-            'mka' => 'audio/x-matroska',
-            'bmp' => 'image/bmp',
-            'gif' => 'image/gif',
-            'jpeg' => 'image/jpeg',
-            'jpe' => 'image/jpeg',
-            'jpg' => 'image/jpeg',
-            'png' => 'image/png',
-            'tiff' => 'image/tiff',
-            'tif' => 'image/tiff',
-            'webp' => 'image/webp',
-            'avif' => 'image/avif',
-            'heif' => 'image/heif',
-            'heifs' => 'image/heif-sequence',
-            'heic' => 'image/heic',
-            'heics' => 'image/heic-sequence',
-            'eml' => 'message/rfc822',
-            'css' => 'text/css',
-            'html' => 'text/html',
-            'htm' => 'text/html',
-            'shtml' => 'text/html',
-            'log' => 'text/plain',
-            'text' => 'text/plain',
-            'txt' => 'text/plain',
-            'rtx' => 'text/richtext',
-            'rtf' => 'text/rtf',
-            'vcf' => 'text/vcard',
-            'vcard' => 'text/vcard',
-            'ics' => 'text/calendar',
-            'xml' => 'text/xml',
-            'xsl' => 'text/xml',
-            'wmv' => 'video/x-ms-wmv',
-            'mpeg' => 'video/mpeg',
-            'mpe' => 'video/mpeg',
-            'mpg' => 'video/mpeg',
-            'mp4' => 'video/mp4',
-            'm4v' => 'video/mp4',
-            'mov' => 'video/quicktime',
-            'qt' => 'video/quicktime',
-            'rv' => 'video/vnd.rn-realvideo',
-            'avi' => 'video/x-msvideo',
-            'movie' => 'video/x-sgi-movie',
-            'webm' => 'video/webm',
-            'mkv' => 'video/x-matroska',
-        ];
-        $ext = strtolower($ext);
-        if (array_key_exists($ext, $mimes)) {
-            return $mimes[$ext];
-        }
-
-        return 'application/octet-stream';
-    }
-
-    /**
-     * Map a file name to a MIME type.
-     * Defaults to 'application/octet-stream', i.e.. arbitrary binary data.
-     *
-     * @param string $filename A file name or full path, does not need to exist as a file
-     *
-     * @return string
-     */
-    public static function filenameToType($filename)
-    {
-        // In case the path is a URL, strip any query string before getting extension
-        $qpos = strpos($filename, '?');
-        if (false !== $qpos) {
-            $filename = substr($filename, 0, $qpos);
-        }
-        $ext = static::mb_pathinfo($filename, PATHINFO_EXTENSION);
-
-        return static::_mime_types($ext);
-    }
-
-    /**
-     * Multi-byte-safe pathinfo replacement.
-     * Drop-in replacement for pathinfo(), but multibyte- and cross-platform-safe.
-     *
-     * @see http://www.php.net/manual/en/function.pathinfo.php#107461
-     *
-     * @param string     $path    A filename or path, does not need to exist as a file
-     * @param int|string $options Either a PATHINFO_* constant,
-     *                            or a string name to return only the specified piece
-     *
-     * @return string|array
-     */
-    public static function mb_pathinfo($path, $options = null)
-    {
-        $ret = ['dirname' => '', 'basename' => '', 'extension' => '', 'filename' => ''];
-        $pathinfo = [];
-        if (preg_match('#^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^.\\\\/]+?)|))[\\\\/.]*$#m', $path, $pathinfo)) {
-            if (array_key_exists(1, $pathinfo)) {
-                $ret['dirname'] = $pathinfo[1];
-            }
-            if (array_key_exists(2, $pathinfo)) {
-                $ret['basename'] = $pathinfo[2];
-            }
-            if (array_key_exists(5, $pathinfo)) {
-                $ret['extension'] = $pathinfo[5];
-            }
-            if (array_key_exists(3, $pathinfo)) {
-                $ret['filename'] = $pathinfo[3];
-            }
-        }
-        switch ($options) {
-            case PATHINFO_DIRNAME:
-            case 'dirname':
-                return $ret['dirname'];
-            case PATHINFO_BASENAME:
-            case 'basename':
-                return $ret['basename'];
-            case PATHINFO_EXTENSION:
-            case 'extension':
-                return $ret['extension'];
-            case PATHINFO_FILENAME:
-            case 'filename':
-                return $ret['filename'];
-            default:
-                return $ret;
-        }
-    }
-
-    /**
-     * Set or reset instance properties.
-     * You should avoid this function - it's more verbose, less efficient, more error-prone and
-     * harder to debug than setting properties directly.
-     * Usage Example:
-     * `$mail->set('SMTPSecure', static::ENCRYPTION_STARTTLS);`
-     *   is the same as:
-     * `$mail->SMTPSecure = static::ENCRYPTION_STARTTLS;`.
-     *
-     * @param string $name  The property name to set
-     * @param mixed  $value The value to set the property to
-     *
-     * @return bool
-     */
-    public function set($name, $value = '')
-    {
-        if (property_exists($this, $name)) {
-            $this->$name = $value;
-
-            return true;
-        }
-        $this->setError($this->lang('variable_set') . $name);
-
-        return false;
-    }
-
-    /**
-     * Strip newlines to prevent header injection.
-     *
-     * @param string $str
-     *
-     * @return string
-     */
-    public function secureHeader($str)
-    {
-        return trim(str_replace(["\r", "\n"], '', $str));
-    }
-
-    /**
-     * Normalize line breaks in a string.
-     * Converts UNIX LF, Mac CR and Windows CRLF line breaks into a single line break format.
-     * Defaults to CRLF (for message bodies) and preserves consecutive breaks.
-     *
-     * @param string $text
-     * @param string $breaktype What kind of line break to use; defaults to static::$LE
-     *
-     * @return string
-     */
-    public static function normalizeBreaks($text, $breaktype = null)
-    {
-        if (null === $breaktype) {
-            $breaktype = static::$LE;
-        }
-        // Normalise to \n
-        $text = str_replace([self::CRLF, "\r"], "\n", $text);
-        // Now convert LE as needed
-        if ("\n" !== $breaktype) {
-            $text = str_replace("\n", $breaktype, $text);
-        }
-
-        return $text;
-    }
-
-    /**
-     * Remove trailing breaks from a string.
-     *
-     * @param string $text
-     *
-     * @return string The text to remove breaks from
-     */
-    public static function stripTrailingWSP($text)
-    {
-        return rtrim($text, " \r\n\t");
-    }
-
-    /**
-     * Return the current line break format string.
-     *
-     * @return string
-     */
-    public static function getLE()
-    {
-        return static::$LE;
-    }
-
-    /**
-     * Set the line break format string, e.g. "\r\n".
-     *
-     * @param string $le
-     */
-    protected static function setLE($le)
-    {
-        static::$LE = $le;
-    }
-
-    /**
-     * Set the public and private key files and password for S/MIME signing.
-     *
-     * @param string $cert_filename
-     * @param string $key_filename
-     * @param string $key_pass            Password for private key
-     * @param string $extracerts_filename Optional path to chain certificate
-     */
-    public function sign($cert_filename, $key_filename, $key_pass, $extracerts_filename = '')
-    {
-        $this->sign_cert_file = $cert_filename;
-        $this->sign_key_file = $key_filename;
-        $this->sign_key_pass = $key_pass;
-        $this->sign_extracerts_file = $extracerts_filename;
-    }
-
-    /**
-     * Quoted-Printable-encode a DKIM header.
-     *
-     * @param string $txt
-     *
-     * @return string
-     */
-    public function DKIM_QP($txt)
-    {
-        $line = '';
-        $len = strlen($txt);
-        for ($i = 0; $i < $len; ++$i) {
-            $ord = ord($txt[$i]);
-            if (((0x21 <= $ord) && ($ord <= 0x3A)) || $ord === 0x3C || ((0x3E <= $ord) && ($ord <= 0x7E))) {
-                $line .= $txt[$i];
-            } else {
-                $line .= '=' . sprintf('%02X', $ord);
-            }
-        }
-
-        return $line;
-    }
-
-    /**
-     * Generate a DKIM signature.
-     *
-     * @param string $signHeader
-     *
-     * @throws Exception
-     *
-     * @return string The DKIM signature value
-     */
-    public function DKIM_Sign($signHeader)
-    {
-        if (!defined('PKCS7_TEXT')) {
-            if ($this->exceptions) {
-                throw new Exception($this->lang('extension_missing') . 'openssl');
-            }
-
-            return '';
-        }
-        $privKeyStr = !empty($this->DKIM_private_string) ?
-            $this->DKIM_private_string :
-            file_get_contents($this->DKIM_private);
-        if ('' !== $this->DKIM_passphrase) {
-            $privKey = openssl_pkey_get_private($privKeyStr, $this->DKIM_passphrase);
-        } else {
-            $privKey = openssl_pkey_get_private($privKeyStr);
-        }
-        if (openssl_sign($signHeader, $signature, $privKey, 'sha256WithRSAEncryption')) {
-            openssl_pkey_free($privKey);
-
-            return base64_encode($signature);
-        }
-        openssl_pkey_free($privKey);
-
-        return '';
-    }
-
-    /**
-     * Generate a DKIM canonicalization header.
-     * Uses the 'relaxed' algorithm from RFC6376 section 3.4.2.
-     * Canonicalized headers should *always* use CRLF, regardless of mailer setting.
-     *
-     * @see https://tools.ietf.org/html/rfc6376#section-3.4.2
-     *
-     * @param string $signHeader Header
-     *
-     * @return string
-     */
-    public function DKIM_HeaderC($signHeader)
-    {
-        //Normalize breaks to CRLF (regardless of the mailer)
-        $signHeader = static::normalizeBreaks($signHeader, self::CRLF);
-        //Unfold header lines
-        //Note PCRE \s is too broad a definition of whitespace; RFC5322 defines it as `[ \t]`
-        //@see https://tools.ietf.org/html/rfc5322#section-2.2
-        //That means this may break if you do something daft like put vertical tabs in your headers.
-        $signHeader = preg_replace('/\r\n[ \t]+/', ' ', $signHeader);
-        //Break headers out into an array
-        $lines = explode(self::CRLF, $signHeader);
-        foreach ($lines as $key => $line) {
-            //If the header is missing a :, skip it as it's invalid
-            //This is likely to happen because the explode() above will also split
-            //on the trailing LE, leaving an empty line
-            if (strpos($line, ':') === false) {
-                continue;
-            }
-            list($heading, $value) = explode(':', $line, 2);
-            //Lower-case header name
-            $heading = strtolower($heading);
-            //Collapse white space within the value, also convert WSP to space
-            $value = preg_replace('/[ \t]+/', ' ', $value);
-            //RFC6376 is slightly unclear here - it says to delete space at the *end* of each value
-            //But then says to delete space before and after the colon.
-            //Net result is the same as trimming both ends of the value.
-            //By elimination, the same applies to the field name
-            $lines[$key] = trim($heading, " \t") . ':' . trim($value, " \t");
-        }
-
-        return implode(self::CRLF, $lines);
-    }
-
-    /**
-     * Generate a DKIM canonicalization body.
-     * Uses the 'simple' algorithm from RFC6376 section 3.4.3.
-     * Canonicalized bodies should *always* use CRLF, regardless of mailer setting.
-     *
-     * @see https://tools.ietf.org/html/rfc6376#section-3.4.3
-     *
-     * @param string $body Message Body
-     *
-     * @return string
-     */
-    public function DKIM_BodyC($body)
-    {
-        if (empty($body)) {
-            return self::CRLF;
-        }
-        // Normalize line endings to CRLF
-        $body = static::normalizeBreaks($body, self::CRLF);
-
-        //Reduce multiple trailing line breaks to a single one
-        return static::stripTrailingWSP($body) . self::CRLF;
-    }
-
-    /**
-     * Create the DKIM header and body in a new message header.
-     *
-     * @param string $headers_line Header lines
-     * @param string $subject      Subject
-     * @param string $body         Body
-     *
-     * @throws Exception
-     *
-     * @return string
-     */
-    public function DKIM_Add($headers_line, $subject, $body)
-    {
-        $DKIMsignatureType = 'rsa-sha256'; // Signature & hash algorithms
-        $DKIMcanonicalization = 'relaxed/simple'; // Canonicalization methods of header & body
-        $DKIMquery = 'dns/txt'; // Query method
-        $DKIMtime = time();
-        //Always sign these headers without being asked
-        //Recommended list from https://tools.ietf.org/html/rfc6376#section-5.4.1
-        $autoSignHeaders = [
-            'from',
-            'to',
-            'cc',
-            'date',
-            'subject',
-            'reply-to',
-            'message-id',
-            'content-type',
-            'mime-version',
-            'x-mailer',
-        ];
-        if (stripos($headers_line, 'Subject') === false) {
-            $headers_line .= 'Subject: ' . $subject . static::$LE;
-        }
-        $headerLines = explode(static::$LE, $headers_line);
-        $currentHeaderLabel = '';
-        $currentHeaderValue = '';
-        $parsedHeaders = [];
-        $headerLineIndex = 0;
-        $headerLineCount = count($headerLines);
-        foreach ($headerLines as $headerLine) {
-            $matches = [];
-            if (preg_match('/^([^ \t]*?)(?::[ \t]*)(.*)$/', $headerLine, $matches)) {
-                if ($currentHeaderLabel !== '') {
-                    //We were previously in another header; This is the start of a new header, so save the previous one
-                    $parsedHeaders[] = ['label' => $currentHeaderLabel, 'value' => $currentHeaderValue];
-                }
-                $currentHeaderLabel = $matches[1];
-                $currentHeaderValue = $matches[2];
-            } elseif (preg_match('/^[ \t]+(.*)$/', $headerLine, $matches)) {
-                //This is a folded continuation of the current header, so unfold it
-                $currentHeaderValue .= ' ' . $matches[1];
-            }
-            ++$headerLineIndex;
-            if ($headerLineIndex >= $headerLineCount) {
-                //This was the last line, so finish off this header
-                $parsedHeaders[] = ['label' => $currentHeaderLabel, 'value' => $currentHeaderValue];
-            }
-        }
-        $copiedHeaders = [];
-        $headersToSignKeys = [];
-        $headersToSign = [];
-        foreach ($parsedHeaders as $header) {
-            //Is this header one that must be included in the DKIM signature?
-            if (in_array(strtolower($header['label']), $autoSignHeaders, true)) {
-                $headersToSignKeys[] = $header['label'];
-                $headersToSign[] = $header['label'] . ': ' . $header['value'];
-                if ($this->DKIM_copyHeaderFields) {
-                    $copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC
-                        str_replace('|', '=7C', $this->DKIM_QP($header['value']));
-                }
-                continue;
-            }
-            //Is this an extra custom header we've been asked to sign?
-            if (in_array($header['label'], $this->DKIM_extraHeaders, true)) {
-                //Find its value in custom headers
-                foreach ($this->CustomHeader as $customHeader) {
-                    if ($customHeader[0] === $header['label']) {
-                        $headersToSignKeys[] = $header['label'];
-                        $headersToSign[] = $header['label'] . ': ' . $header['value'];
-                        if ($this->DKIM_copyHeaderFields) {
-                            $copiedHeaders[] = $header['label'] . ':' . //Note no space after this, as per RFC
-                                str_replace('|', '=7C', $this->DKIM_QP($header['value']));
-                        }
-                        //Skip straight to the next header
-                        continue 2;
-                    }
-                }
-            }
-        }
-        $copiedHeaderFields = '';
-        if ($this->DKIM_copyHeaderFields && count($copiedHeaders) > 0) {
-            //Assemble a DKIM 'z' tag
-            $copiedHeaderFields = ' z=';
-            $first = true;
-            foreach ($copiedHeaders as $copiedHeader) {
-                if (!$first) {
-                    $copiedHeaderFields .= static::$LE . ' |';
-                }
-                //Fold long values
-                if (strlen($copiedHeader) > self::STD_LINE_LENGTH - 3) {
-                    $copiedHeaderFields .= substr(
-                        chunk_split($copiedHeader, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS),
-                        0,
-                        -strlen(static::$LE . self::FWS)
-                    );
-                } else {
-                    $copiedHeaderFields .= $copiedHeader;
-                }
-                $first = false;
-            }
-            $copiedHeaderFields .= ';' . static::$LE;
-        }
-        $headerKeys = ' h=' . implode(':', $headersToSignKeys) . ';' . static::$LE;
-        $headerValues = implode(static::$LE, $headersToSign);
-        $body = $this->DKIM_BodyC($body);
-        $DKIMb64 = base64_encode(pack('H*', hash('sha256', $body))); // Base64 of packed binary SHA-256 hash of body
-        $ident = '';
-        if ('' !== $this->DKIM_identity) {
-            $ident = ' i=' . $this->DKIM_identity . ';' . static::$LE;
-        }
-        //The DKIM-Signature header is included in the signature *except for* the value of the `b` tag
-        //which is appended after calculating the signature
-        //https://tools.ietf.org/html/rfc6376#section-3.5
-        $dkimSignatureHeader = 'DKIM-Signature: v=1;' .
-            ' d=' . $this->DKIM_domain . ';' .
-            ' s=' . $this->DKIM_selector . ';' . static::$LE .
-            ' a=' . $DKIMsignatureType . ';' .
-            ' q=' . $DKIMquery . ';' .
-            ' t=' . $DKIMtime . ';' .
-            ' c=' . $DKIMcanonicalization . ';' . static::$LE .
-            $headerKeys .
-            $ident .
-            $copiedHeaderFields .
-            ' bh=' . $DKIMb64 . ';' . static::$LE .
-            ' b=';
-        //Canonicalize the set of headers
-        $canonicalizedHeaders = $this->DKIM_HeaderC(
-            $headerValues . static::$LE . $dkimSignatureHeader
-        );
-        $signature = $this->DKIM_Sign($canonicalizedHeaders);
-        $signature = trim(chunk_split($signature, self::STD_LINE_LENGTH - 3, static::$LE . self::FWS));
-
-        return static::normalizeBreaks($dkimSignatureHeader . $signature);
-    }
-
-    /**
-     * Detect if a string contains a line longer than the maximum line length
-     * allowed by RFC 2822 section 2.1.1.
-     *
-     * @param string $str
-     *
-     * @return bool
-     */
-    public static function hasLineLongerThanMax($str)
-    {
-        return (bool) preg_match('/^(.{' . (self::MAX_LINE_LENGTH + strlen(static::$LE)) . ',})/m', $str);
-    }
-
-    /**
-     * If a string contains any "special" characters, double-quote the name,
-     * and escape any double quotes with a backslash.
-     *
-     * @param string $str
-     *
-     * @return string
-     *
-     * @see RFC822 3.4.1
-     */
-    public static function quotedString($str)
-    {
-        if (preg_match('/[ ()<>@,;:"\/\[\]?=]/', $str)) {
-            //If the string contains any of these chars, it must be double-quoted
-            //and any double quotes must be escaped with a backslash
-            return '"' . str_replace('"', '\\"', $str) . '"';
-        }
-
-        //Return the string untouched, it doesn't need quoting
-        return $str;
-    }
-
-    /**
-     * Allows for public read access to 'to' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getToAddresses()
-    {
-        return $this->to;
-    }
-
-    /**
-     * Allows for public read access to 'cc' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getCcAddresses()
-    {
-        return $this->cc;
-    }
-
-    /**
-     * Allows for public read access to 'bcc' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getBccAddresses()
-    {
-        return $this->bcc;
-    }
-
-    /**
-     * Allows for public read access to 'ReplyTo' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getReplyToAddresses()
-    {
-        return $this->ReplyTo;
-    }
-
-    /**
-     * Allows for public read access to 'all_recipients' property.
-     * Before the send() call, queued addresses (i.e. with IDN) are not yet included.
-     *
-     * @return array
-     */
-    public function getAllRecipientAddresses()
-    {
-        return $this->all_recipients;
-    }
-
-    /**
-     * Perform a callback.
-     *
-     * @param bool   $isSent
-     * @param array  $to
-     * @param array  $cc
-     * @param array  $bcc
-     * @param string $subject
-     * @param string $body
-     * @param string $from
-     * @param array  $extra
-     */
-    protected function doCallback($isSent, $to, $cc, $bcc, $subject, $body, $from, $extra)
-    {
-        if (!empty($this->action_function) && is_callable($this->action_function)) {
-            call_user_func($this->action_function, $isSent, $to, $cc, $bcc, $subject, $body, $from, $extra);
-        }
-    }
-
-    /**
-     * Get the OAuth instance.
-     *
-     * @return OAuth
-     */
-    public function getOAuth()
-    {
-        return $this->oauth;
-    }
-
-    /**
-     * Set an OAuth instance.
-     */
-    public function setOAuth(OAuth $oauth)
-    {
-        $this->oauth = $oauth;
-    }
-}
diff --git a/libs/phpmailer/SMTP.php b/libs/phpmailer/SMTP.php
deleted file mode 100644
index 845bfdb..0000000
--- a/libs/phpmailer/SMTP.php
+++ /dev/null
@@ -1,1426 +0,0 @@
-<?php
-/**
- * PHPMailer RFC821 SMTP email transport class.
- * PHP Version 5.5.
- *
- * @see       https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
- *
- * @author    Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
- * @author    Jim Jagielski (jimjag) <jimjag@gmail.com>
- * @author    Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
- * @author    Brent R. Matzelle (original founder)
- * @copyright 2012 - 2020 Marcus Bointon
- * @copyright 2010 - 2012 Jim Jagielski
- * @copyright 2004 - 2009 Andy Prevost
- * @license   http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
- * @note      This program is distributed in the hope that it will be useful - WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-namespace PHPMailer\PHPMailer;
-
-/**
- * PHPMailer RFC821 SMTP email transport class.
- * Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server.
- *
- * @author Chris Ryan
- * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
- */
-class SMTP
-{
-    /**
-     * The PHPMailer SMTP version number.
-     *
-     * @var string
-     */
-    const VERSION = '6.1.7';
-
-    /**
-     * SMTP line break constant.
-     *
-     * @var string
-     */
-    const LE = "\r\n";
-
-    /**
-     * The SMTP port to use if one is not specified.
-     *
-     * @var int
-     */
-    const DEFAULT_PORT = 25;
-
-    /**
-     * The maximum line length allowed by RFC 5321 section 4.5.3.1.6,
-     * *excluding* a trailing CRLF break.
-     *
-     * @see https://tools.ietf.org/html/rfc5321#section-4.5.3.1.6
-     *
-     * @var int
-     */
-    const MAX_LINE_LENGTH = 998;
-
-    /**
-     * The maximum line length allowed for replies in RFC 5321 section 4.5.3.1.5,
-     * *including* a trailing CRLF line break.
-     *
-     * @see https://tools.ietf.org/html/rfc5321#section-4.5.3.1.5
-     *
-     * @var int
-     */
-    const MAX_REPLY_LENGTH = 512;
-
-    /**
-     * Debug level for no output.
-     *
-     * @var int
-     */
-    const DEBUG_OFF = 0;
-
-    /**
-     * Debug level to show client -> server messages.
-     *
-     * @var int
-     */
-    const DEBUG_CLIENT = 1;
-
-    /**
-     * Debug level to show client -> server and server -> client messages.
-     *
-     * @var int
-     */
-    const DEBUG_SERVER = 2;
-
-    /**
-     * Debug level to show connection status, client -> server and server -> client messages.
-     *
-     * @var int
-     */
-    const DEBUG_CONNECTION = 3;
-
-    /**
-     * Debug level to show all messages.
-     *
-     * @var int
-     */
-    const DEBUG_LOWLEVEL = 4;
-
-    /**
-     * Debug output level.
-     * Options:
-     * * self::DEBUG_OFF (`0`) No debug output, default
-     * * self::DEBUG_CLIENT (`1`) Client commands
-     * * self::DEBUG_SERVER (`2`) Client commands and server responses
-     * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
-     * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages.
-     *
-     * @var int
-     */
-    public $do_debug = self::DEBUG_OFF;
-
-    /**
-     * How to handle debug output.
-     * Options:
-     * * `echo` Output plain-text as-is, appropriate for CLI
-     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
-     * * `error_log` Output to error log as configured in php.ini
-     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
-     *
-     * ```php
-     * $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
-     * ```
-     *
-     * Alternatively, you can pass in an instance of a PSR-3 compatible logger, though only `debug`
-     * level output is used:
-     *
-     * ```php
-     * $mail->Debugoutput = new myPsr3Logger;
-     * ```
-     *
-     * @var string|callable|\Psr\Log\LoggerInterface
-     */
-    public $Debugoutput = 'echo';
-
-    /**
-     * Whether to use VERP.
-     *
-     * @see http://en.wikipedia.org/wiki/Variable_envelope_return_path
-     * @see http://www.postfix.org/VERP_README.html Info on VERP
-     *
-     * @var bool
-     */
-    public $do_verp = false;
-
-    /**
-     * The timeout value for connection, in seconds.
-     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
-     * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
-     *
-     * @see http://tools.ietf.org/html/rfc2821#section-4.5.3.2
-     *
-     * @var int
-     */
-    public $Timeout = 300;
-
-    /**
-     * How long to wait for commands to complete, in seconds.
-     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2.
-     *
-     * @var int
-     */
-    public $Timelimit = 300;
-
-    /**
-     * Patterns to extract an SMTP transaction id from reply to a DATA command.
-     * The first capture group in each regex will be used as the ID.
-     * MS ESMTP returns the message ID, which may not be correct for internal tracking.
-     *
-     * @var string[]
-     */
-    protected $smtp_transaction_id_patterns = [
-        'exim' => '/[\d]{3} OK id=(.*)/',
-        'sendmail' => '/[\d]{3} 2.0.0 (.*) Message/',
-        'postfix' => '/[\d]{3} 2.0.0 Ok: queued as (.*)/',
-        'Microsoft_ESMTP' => '/[0-9]{3} 2.[\d].0 (.*)@(?:.*) Queued mail for delivery/',
-        'Amazon_SES' => '/[\d]{3} Ok (.*)/',
-        'SendGrid' => '/[\d]{3} Ok: queued as (.*)/',
-        'CampaignMonitor' => '/[\d]{3} 2.0.0 OK:([a-zA-Z\d]{48})/',
-    ];
-
-    /**
-     * The last transaction ID issued in response to a DATA command,
-     * if one was detected.
-     *
-     * @var string|bool|null
-     */
-    protected $last_smtp_transaction_id;
-
-    /**
-     * The socket for the server connection.
-     *
-     * @var ?resource
-     */
-    protected $smtp_conn;
-
-    /**
-     * Error information, if any, for the last SMTP command.
-     *
-     * @var array
-     */
-    protected $error = [
-        'error' => '',
-        'detail' => '',
-        'smtp_code' => '',
-        'smtp_code_ex' => '',
-    ];
-
-    /**
-     * The reply the server sent to us for HELO.
-     * If null, no HELO string has yet been received.
-     *
-     * @var string|null
-     */
-    protected $helo_rply;
-
-    /**
-     * The set of SMTP extensions sent in reply to EHLO command.
-     * Indexes of the array are extension names.
-     * Value at index 'HELO' or 'EHLO' (according to command that was sent)
-     * represents the server name. In case of HELO it is the only element of the array.
-     * Other values can be boolean TRUE or an array containing extension options.
-     * If null, no HELO/EHLO string has yet been received.
-     *
-     * @var array|null
-     */
-    protected $server_caps;
-
-    /**
-     * The most recent reply received from the server.
-     *
-     * @var string
-     */
-    protected $last_reply = '';
-
-    /**
-     * Output debugging info via a user-selected method.
-     *
-     * @param string $str   Debug string to output
-     * @param int    $level The debug level of this message; see DEBUG_* constants
-     *
-     * @see SMTP::$Debugoutput
-     * @see SMTP::$do_debug
-     */
-    protected function edebug($str, $level = 0)
-    {
-        if ($level > $this->do_debug) {
-            return;
-        }
-        //Is this a PSR-3 logger?
-        if ($this->Debugoutput instanceof \Psr\Log\LoggerInterface) {
-            $this->Debugoutput->debug($str);
-
-            return;
-        }
-        //Avoid clash with built-in function names
-        if (is_callable($this->Debugoutput) && !in_array($this->Debugoutput, ['error_log', 'html', 'echo'])) {
-            call_user_func($this->Debugoutput, $str, $level);
-
-            return;
-        }
-        switch ($this->Debugoutput) {
-            case 'error_log':
-                //Don't output, just log
-                error_log($str);
-                break;
-            case 'html':
-                //Cleans up output a bit for a better looking, HTML-safe output
-                echo gmdate('Y-m-d H:i:s'), ' ', htmlentities(
-                    preg_replace('/[\r\n]+/', '', $str),
-                    ENT_QUOTES,
-                    'UTF-8'
-                ), "<br>\n";
-                break;
-            case 'echo':
-            default:
-                //Normalize line breaks
-                $str = preg_replace('/\r\n|\r/m', "\n", $str);
-                echo gmdate('Y-m-d H:i:s'),
-                "\t",
-                    //Trim trailing space
-                trim(
-                    //Indent for readability, except for trailing break
-                    str_replace(
-                        "\n",
-                        "\n                   \t                  ",
-                        trim($str)
-                    )
-                ),
-                "\n";
-        }
-    }
-
-    /**
-     * Connect to an SMTP server.
-     *
-     * @param string $host    SMTP server IP or host name
-     * @param int    $port    The port number to connect to
-     * @param int    $timeout How long to wait for the connection to open
-     * @param array  $options An array of options for stream_context_create()
-     *
-     * @return bool
-     */
-    public function connect($host, $port = null, $timeout = 30, $options = [])
-    {
-        // Clear errors to avoid confusion
-        $this->setError('');
-        // Make sure we are __not__ connected
-        if ($this->connected()) {
-            // Already connected, generate error
-            $this->setError('Already connected to a server');
-
-            return false;
-        }
-        if (empty($port)) {
-            $port = self::DEFAULT_PORT;
-        }
-        // Connect to the SMTP server
-        $this->edebug(
-            "Connection: opening to $host:$port, timeout=$timeout, options=" .
-            (count($options) > 0 ? var_export($options, true) : 'array()'),
-            self::DEBUG_CONNECTION
-        );
-
-        $this->smtp_conn = $this->getSMTPConnection($host, $port, $timeout, $options);
-
-        if ($this->smtp_conn === false) {
-            //Error info already set inside `getSMTPConnection()`
-            return false;
-        }
-
-        $this->edebug('Connection: opened', self::DEBUG_CONNECTION);
-
-        // Get any announcement
-        $this->last_reply = $this->get_lines();
-        $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
-
-        return true;
-    }
-
-    /**
-     * Create connection to the SMTP server.
-     *
-     * @param string $host    SMTP server IP or host name
-     * @param int    $port    The port number to connect to
-     * @param int    $timeout How long to wait for the connection to open
-     * @param array  $options An array of options for stream_context_create()
-     *
-     * @return false|resource
-     */
-    protected function getSMTPConnection($host, $port = null, $timeout = 30, $options = [])
-    {
-        static $streamok;
-        //This is enabled by default since 5.0.0 but some providers disable it
-        //Check this once and cache the result
-        if (null === $streamok) {
-            $streamok = function_exists('stream_socket_client');
-        }
-
-        $errno = 0;
-        $errstr = '';
-        if ($streamok) {
-            $socket_context = stream_context_create($options);
-            set_error_handler([$this, 'errorHandler']);
-            $connection = stream_socket_client(
-                $host . ':' . $port,
-                $errno,
-                $errstr,
-                $timeout,
-                STREAM_CLIENT_CONNECT,
-                $socket_context
-            );
-            restore_error_handler();
-        } else {
-            //Fall back to fsockopen which should work in more places, but is missing some features
-            $this->edebug(
-                'Connection: stream_socket_client not available, falling back to fsockopen',
-                self::DEBUG_CONNECTION
-            );
-            set_error_handler([$this, 'errorHandler']);
-            $connection = fsockopen(
-                $host,
-                $port,
-                $errno,
-                $errstr,
-                $timeout
-            );
-            restore_error_handler();
-        }
-
-        // Verify we connected properly
-        if (!is_resource($connection)) {
-            $this->setError(
-                'Failed to connect to server',
-                '',
-                (string) $errno,
-                $errstr
-            );
-            $this->edebug(
-                'SMTP ERROR: ' . $this->error['error']
-                . ": $errstr ($errno)",
-                self::DEBUG_CLIENT
-            );
-
-            return false;
-        }
-
-        // SMTP server can take longer to respond, give longer timeout for first read
-        // Windows does not have support for this timeout function
-        if (strpos(PHP_OS, 'WIN') !== 0) {
-            $max = (int)ini_get('max_execution_time');
-            // Don't bother if unlimited, or if set_time_limit is disabled
-            if (0 !== $max && $timeout > $max && strpos(ini_get('disable_functions'), 'set_time_limit') === false) {
-                @set_time_limit($timeout);
-            }
-            stream_set_timeout($connection, $timeout, 0);
-        }
-
-        return $connection;
-    }
-
-    /**
-     * Initiate a TLS (encrypted) session.
-     *
-     * @return bool
-     */
-    public function startTLS()
-    {
-        if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
-            return false;
-        }
-
-        //Allow the best TLS version(s) we can
-        $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
-
-        //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
-        //so add them back in manually if we can
-        if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
-            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
-            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
-        }
-
-        // Begin encrypted connection
-        set_error_handler([$this, 'errorHandler']);
-        $crypto_ok = stream_socket_enable_crypto(
-            $this->smtp_conn,
-            true,
-            $crypto_method
-        );
-        restore_error_handler();
-
-        return (bool) $crypto_ok;
-    }
-
-    /**
-     * Perform SMTP authentication.
-     * Must be run after hello().
-     *
-     * @see    hello()
-     *
-     * @param string $username The user name
-     * @param string $password The password
-     * @param string $authtype The auth type (CRAM-MD5, PLAIN, LOGIN, XOAUTH2)
-     * @param OAuth  $OAuth    An optional OAuth instance for XOAUTH2 authentication
-     *
-     * @return bool True if successfully authenticated
-     */
-    public function authenticate(
-        $username,
-        $password,
-        $authtype = null,
-        $OAuth = null
-    ) {
-        if (!$this->server_caps) {
-            $this->setError('Authentication is not allowed before HELO/EHLO');
-
-            return false;
-        }
-
-        if (array_key_exists('EHLO', $this->server_caps)) {
-            // SMTP extensions are available; try to find a proper authentication method
-            if (!array_key_exists('AUTH', $this->server_caps)) {
-                $this->setError('Authentication is not allowed at this stage');
-                // 'at this stage' means that auth may be allowed after the stage changes
-                // e.g. after STARTTLS
-
-                return false;
-            }
-
-            $this->edebug('Auth method requested: ' . ($authtype ?: 'UNSPECIFIED'), self::DEBUG_LOWLEVEL);
-            $this->edebug(
-                'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
-                self::DEBUG_LOWLEVEL
-            );
-
-            //If we have requested a specific auth type, check the server supports it before trying others
-            if (null !== $authtype && !in_array($authtype, $this->server_caps['AUTH'], true)) {
-                $this->edebug('Requested auth method not available: ' . $authtype, self::DEBUG_LOWLEVEL);
-                $authtype = null;
-            }
-
-            if (empty($authtype)) {
-                //If no auth mechanism is specified, attempt to use these, in this order
-                //Try CRAM-MD5 first as it's more secure than the others
-                foreach (['CRAM-MD5', 'LOGIN', 'PLAIN', 'XOAUTH2'] as $method) {
-                    if (in_array($method, $this->server_caps['AUTH'], true)) {
-                        $authtype = $method;
-                        break;
-                    }
-                }
-                if (empty($authtype)) {
-                    $this->setError('No supported authentication methods found');
-
-                    return false;
-                }
-                $this->edebug('Auth method selected: ' . $authtype, self::DEBUG_LOWLEVEL);
-            }
-
-            if (!in_array($authtype, $this->server_caps['AUTH'], true)) {
-                $this->setError("The requested authentication method \"$authtype\" is not supported by the server");
-
-                return false;
-            }
-        } elseif (empty($authtype)) {
-            $authtype = 'LOGIN';
-        }
-        switch ($authtype) {
-            case 'PLAIN':
-                // Start authentication
-                if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
-                    return false;
-                }
-                // Send encoded username and password
-                if (!$this->sendCommand(
-                    'User & Password',
-                    base64_encode("\0" . $username . "\0" . $password),
-                    235
-                )
-                ) {
-                    return false;
-                }
-                break;
-            case 'LOGIN':
-                // Start authentication
-                if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
-                    return false;
-                }
-                if (!$this->sendCommand('Username', base64_encode($username), 334)) {
-                    return false;
-                }
-                if (!$this->sendCommand('Password', base64_encode($password), 235)) {
-                    return false;
-                }
-                break;
-            case 'CRAM-MD5':
-                // Start authentication
-                if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
-                    return false;
-                }
-                // Get the challenge
-                $challenge = base64_decode(substr($this->last_reply, 4));
-
-                // Build the response
-                $response = $username . ' ' . $this->hmac($challenge, $password);
-
-                // send encoded credentials
-                return $this->sendCommand('Username', base64_encode($response), 235);
-            case 'XOAUTH2':
-                //The OAuth instance must be set up prior to requesting auth.
-                if (null === $OAuth) {
-                    return false;
-                }
-                $oauth = $OAuth->getOauth64();
-
-                // Start authentication
-                if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 ' . $oauth, 235)) {
-                    return false;
-                }
-                break;
-            default:
-                $this->setError("Authentication method \"$authtype\" is not supported");
-
-                return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Calculate an MD5 HMAC hash.
-     * Works like hash_hmac('md5', $data, $key)
-     * in case that function is not available.
-     *
-     * @param string $data The data to hash
-     * @param string $key  The key to hash with
-     *
-     * @return string
-     */
-    protected function hmac($data, $key)
-    {
-        if (function_exists('hash_hmac')) {
-            return hash_hmac('md5', $data, $key);
-        }
-
-        // The following borrowed from
-        // http://php.net/manual/en/function.mhash.php#27225
-
-        // RFC 2104 HMAC implementation for php.
-        // Creates an md5 HMAC.
-        // Eliminates the need to install mhash to compute a HMAC
-        // by Lance Rushing
-
-        $bytelen = 64; // byte length for md5
-        if (strlen($key) > $bytelen) {
-            $key = pack('H*', md5($key));
-        }
-        $key = str_pad($key, $bytelen, chr(0x00));
-        $ipad = str_pad('', $bytelen, chr(0x36));
-        $opad = str_pad('', $bytelen, chr(0x5c));
-        $k_ipad = $key ^ $ipad;
-        $k_opad = $key ^ $opad;
-
-        return md5($k_opad . pack('H*', md5($k_ipad . $data)));
-    }
-
-    /**
-     * Check connection state.
-     *
-     * @return bool True if connected
-     */
-    public function connected()
-    {
-        if (is_resource($this->smtp_conn)) {
-            $sock_status = stream_get_meta_data($this->smtp_conn);
-            if ($sock_status['eof']) {
-                // The socket is valid but we are not connected
-                $this->edebug(
-                    'SMTP NOTICE: EOF caught while checking if connected',
-                    self::DEBUG_CLIENT
-                );
-                $this->close();
-
-                return false;
-            }
-
-            return true; // everything looks good
-        }
-
-        return false;
-    }
-
-    /**
-     * Close the socket and clean up the state of the class.
-     * Don't use this function without first trying to use QUIT.
-     *
-     * @see quit()
-     */
-    public function close()
-    {
-        $this->setError('');
-        $this->server_caps = null;
-        $this->helo_rply = null;
-        if (is_resource($this->smtp_conn)) {
-            // close the connection and cleanup
-            fclose($this->smtp_conn);
-            $this->smtp_conn = null; //Makes for cleaner serialization
-            $this->edebug('Connection: closed', self::DEBUG_CONNECTION);
-        }
-    }
-
-    /**
-     * Send an SMTP DATA command.
-     * Issues a data command and sends the msg_data to the server,
-     * finializing the mail transaction. $msg_data is the message
-     * that is to be send with the headers. Each header needs to be
-     * on a single line followed by a <CRLF> with the message headers
-     * and the message body being separated by an additional <CRLF>.
-     * Implements RFC 821: DATA <CRLF>.
-     *
-     * @param string $msg_data Message data to send
-     *
-     * @return bool
-     */
-    public function data($msg_data)
-    {
-        //This will use the standard timelimit
-        if (!$this->sendCommand('DATA', 'DATA', 354)) {
-            return false;
-        }
-
-        /* The server is ready to accept data!
-         * According to rfc821 we should not send more than 1000 characters on a single line (including the LE)
-         * so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
-         * smaller lines to fit within the limit.
-         * We will also look for lines that start with a '.' and prepend an additional '.'.
-         * NOTE: this does not count towards line-length limit.
-         */
-
-        // Normalize line breaks before exploding
-        $lines = explode("\n", str_replace(["\r\n", "\r"], "\n", $msg_data));
-
-        /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
-         * of the first line (':' separated) does not contain a space then it _should_ be a header and we will
-         * process all lines before a blank line as headers.
-         */
-
-        $field = substr($lines[0], 0, strpos($lines[0], ':'));
-        $in_headers = false;
-        if (!empty($field) && strpos($field, ' ') === false) {
-            $in_headers = true;
-        }
-
-        foreach ($lines as $line) {
-            $lines_out = [];
-            if ($in_headers && $line === '') {
-                $in_headers = false;
-            }
-            //Break this line up into several smaller lines if it's too long
-            //Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
-            while (isset($line[self::MAX_LINE_LENGTH])) {
-                //Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
-                //so as to avoid breaking in the middle of a word
-                $pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
-                //Deliberately matches both false and 0
-                if (!$pos) {
-                    //No nice break found, add a hard break
-                    $pos = self::MAX_LINE_LENGTH - 1;
-                    $lines_out[] = substr($line, 0, $pos);
-                    $line = substr($line, $pos);
-                } else {
-                    //Break at the found point
-                    $lines_out[] = substr($line, 0, $pos);
-                    //Move along by the amount we dealt with
-                    $line = substr($line, $pos + 1);
-                }
-                //If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
-                if ($in_headers) {
-                    $line = "\t" . $line;
-                }
-            }
-            $lines_out[] = $line;
-
-            //Send the lines to the server
-            foreach ($lines_out as $line_out) {
-                //RFC2821 section 4.5.2
-                if (!empty($line_out) && $line_out[0] === '.') {
-                    $line_out = '.' . $line_out;
-                }
-                $this->client_send($line_out . static::LE, 'DATA');
-            }
-        }
-
-        //Message data has been sent, complete the command
-        //Increase timelimit for end of DATA command
-        $savetimelimit = $this->Timelimit;
-        $this->Timelimit *= 2;
-        $result = $this->sendCommand('DATA END', '.', 250);
-        $this->recordLastTransactionID();
-        //Restore timelimit
-        $this->Timelimit = $savetimelimit;
-
-        return $result;
-    }
-
-    /**
-     * Send an SMTP HELO or EHLO command.
-     * Used to identify the sending server to the receiving server.
-     * This makes sure that client and server are in a known state.
-     * Implements RFC 821: HELO <SP> <domain> <CRLF>
-     * and RFC 2821 EHLO.
-     *
-     * @param string $host The host name or IP to connect to
-     *
-     * @return bool
-     */
-    public function hello($host = '')
-    {
-        //Try extended hello first (RFC 2821)
-        return $this->sendHello('EHLO', $host) or $this->sendHello('HELO', $host);
-    }
-
-    /**
-     * Send an SMTP HELO or EHLO command.
-     * Low-level implementation used by hello().
-     *
-     * @param string $hello The HELO string
-     * @param string $host  The hostname to say we are
-     *
-     * @return bool
-     *
-     * @see hello()
-     */
-    protected function sendHello($hello, $host)
-    {
-        $noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
-        $this->helo_rply = $this->last_reply;
-        if ($noerror) {
-            $this->parseHelloFields($hello);
-        } else {
-            $this->server_caps = null;
-        }
-
-        return $noerror;
-    }
-
-    /**
-     * Parse a reply to HELO/EHLO command to discover server extensions.
-     * In case of HELO, the only parameter that can be discovered is a server name.
-     *
-     * @param string $type `HELO` or `EHLO`
-     */
-    protected function parseHelloFields($type)
-    {
-        $this->server_caps = [];
-        $lines = explode("\n", $this->helo_rply);
-
-        foreach ($lines as $n => $s) {
-            //First 4 chars contain response code followed by - or space
-            $s = trim(substr($s, 4));
-            if (empty($s)) {
-                continue;
-            }
-            $fields = explode(' ', $s);
-            if (!empty($fields)) {
-                if (!$n) {
-                    $name = $type;
-                    $fields = $fields[0];
-                } else {
-                    $name = array_shift($fields);
-                    switch ($name) {
-                        case 'SIZE':
-                            $fields = ($fields ? $fields[0] : 0);
-                            break;
-                        case 'AUTH':
-                            if (!is_array($fields)) {
-                                $fields = [];
-                            }
-                            break;
-                        default:
-                            $fields = true;
-                    }
-                }
-                $this->server_caps[$name] = $fields;
-            }
-        }
-    }
-
-    /**
-     * Send an SMTP MAIL command.
-     * Starts a mail transaction from the email address specified in
-     * $from. Returns true if successful or false otherwise. If True
-     * the mail transaction is started and then one or more recipient
-     * commands may be called followed by a data command.
-     * Implements RFC 821: MAIL <SP> FROM:<reverse-path> <CRLF>.
-     *
-     * @param string $from Source address of this message
-     *
-     * @return bool
-     */
-    public function mail($from)
-    {
-        $useVerp = ($this->do_verp ? ' XVERP' : '');
-
-        return $this->sendCommand(
-            'MAIL FROM',
-            'MAIL FROM:<' . $from . '>' . $useVerp,
-            250
-        );
-    }
-
-    /**
-     * Send an SMTP QUIT command.
-     * Closes the socket if there is no error or the $close_on_error argument is true.
-     * Implements from RFC 821: QUIT <CRLF>.
-     *
-     * @param bool $close_on_error Should the connection close if an error occurs?
-     *
-     * @return bool
-     */
-    public function quit($close_on_error = true)
-    {
-        $noerror = $this->sendCommand('QUIT', 'QUIT', 221);
-        $err = $this->error; //Save any error
-        if ($noerror || $close_on_error) {
-            $this->close();
-            $this->error = $err; //Restore any error from the quit command
-        }
-
-        return $noerror;
-    }
-
-    /**
-     * Send an SMTP RCPT command.
-     * Sets the TO argument to $toaddr.
-     * Returns true if the recipient was accepted false if it was rejected.
-     * Implements from RFC 821: RCPT <SP> TO:<forward-path> <CRLF>.
-     *
-     * @param string $address The address the message is being sent to
-     * @param string $dsn     Comma separated list of DSN notifications. NEVER, SUCCESS, FAILURE
-     *                        or DELAY. If you specify NEVER all other notifications are ignored.
-     *
-     * @return bool
-     */
-    public function recipient($address, $dsn = '')
-    {
-        if (empty($dsn)) {
-            $rcpt = 'RCPT TO:<' . $address . '>';
-        } else {
-            $dsn = strtoupper($dsn);
-            $notify = [];
-
-            if (strpos($dsn, 'NEVER') !== false) {
-                $notify[] = 'NEVER';
-            } else {
-                foreach (['SUCCESS', 'FAILURE', 'DELAY'] as $value) {
-                    if (strpos($dsn, $value) !== false) {
-                        $notify[] = $value;
-                    }
-                }
-            }
-
-            $rcpt = 'RCPT TO:<' . $address . '> NOTIFY=' . implode(',', $notify);
-        }
-
-        return $this->sendCommand(
-            'RCPT TO',
-            $rcpt,
-            [250, 251]
-        );
-    }
-
-    /**
-     * Send an SMTP RSET command.
-     * Abort any transaction that is currently in progress.
-     * Implements RFC 821: RSET <CRLF>.
-     *
-     * @return bool True on success
-     */
-    public function reset()
-    {
-        return $this->sendCommand('RSET', 'RSET', 250);
-    }
-
-    /**
-     * Send a command to an SMTP server and check its return code.
-     *
-     * @param string    $command       The command name - not sent to the server
-     * @param string    $commandstring The actual command to send
-     * @param int|array $expect        One or more expected integer success codes
-     *
-     * @return bool True on success
-     */
-    protected function sendCommand($command, $commandstring, $expect)
-    {
-        if (!$this->connected()) {
-            $this->setError("Called $command without being connected");
-
-            return false;
-        }
-        //Reject line breaks in all commands
-        if ((strpos($commandstring, "\n") !== false) || (strpos($commandstring, "\r") !== false)) {
-            $this->setError("Command '$command' contained line breaks");
-
-            return false;
-        }
-        $this->client_send($commandstring . static::LE, $command);
-
-        $this->last_reply = $this->get_lines();
-        // Fetch SMTP code and possible error code explanation
-        $matches = [];
-        if (preg_match('/^([\d]{3})[ -](?:([\d]\\.[\d]\\.[\d]{1,2}) )?/', $this->last_reply, $matches)) {
-            $code = (int) $matches[1];
-            $code_ex = (count($matches) > 2 ? $matches[2] : null);
-            // Cut off error code from each response line
-            $detail = preg_replace(
-                "/{$code}[ -]" .
-                ($code_ex ? str_replace('.', '\\.', $code_ex) . ' ' : '') . '/m',
-                '',
-                $this->last_reply
-            );
-        } else {
-            // Fall back to simple parsing if regex fails
-            $code = (int) substr($this->last_reply, 0, 3);
-            $code_ex = null;
-            $detail = substr($this->last_reply, 4);
-        }
-
-        $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
-
-        if (!in_array($code, (array) $expect, true)) {
-            $this->setError(
-                "$command command failed",
-                $detail,
-                $code,
-                $code_ex
-            );
-            $this->edebug(
-                'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
-                self::DEBUG_CLIENT
-            );
-
-            return false;
-        }
-
-        $this->setError('');
-
-        return true;
-    }
-
-    /**
-     * Send an SMTP SAML command.
-     * Starts a mail transaction from the email address specified in $from.
-     * Returns true if successful or false otherwise. If True
-     * the mail transaction is started and then one or more recipient
-     * commands may be called followed by a data command. This command
-     * will send the message to the users terminal if they are logged
-     * in and send them an email.
-     * Implements RFC 821: SAML <SP> FROM:<reverse-path> <CRLF>.
-     *
-     * @param string $from The address the message is from
-     *
-     * @return bool
-     */
-    public function sendAndMail($from)
-    {
-        return $this->sendCommand('SAML', "SAML FROM:$from", 250);
-    }
-
-    /**
-     * Send an SMTP VRFY command.
-     *
-     * @param string $name The name to verify
-     *
-     * @return bool
-     */
-    public function verify($name)
-    {
-        return $this->sendCommand('VRFY', "VRFY $name", [250, 251]);
-    }
-
-    /**
-     * Send an SMTP NOOP command.
-     * Used to keep keep-alives alive, doesn't actually do anything.
-     *
-     * @return bool
-     */
-    public function noop()
-    {
-        return $this->sendCommand('NOOP', 'NOOP', 250);
-    }
-
-    /**
-     * Send an SMTP TURN command.
-     * This is an optional command for SMTP that this class does not support.
-     * This method is here to make the RFC821 Definition complete for this class
-     * and _may_ be implemented in future.
-     * Implements from RFC 821: TURN <CRLF>.
-     *
-     * @return bool
-     */
-    public function turn()
-    {
-        $this->setError('The SMTP TURN command is not implemented');
-        $this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);
-
-        return false;
-    }
-
-    /**
-     * Send raw data to the server.
-     *
-     * @param string $data    The data to send
-     * @param string $command Optionally, the command this is part of, used only for controlling debug output
-     *
-     * @return int|bool The number of bytes sent to the server or false on error
-     */
-    public function client_send($data, $command = '')
-    {
-        //If SMTP transcripts are left enabled, or debug output is posted online
-        //it can leak credentials, so hide credentials in all but lowest level
-        if (self::DEBUG_LOWLEVEL > $this->do_debug &&
-            in_array($command, ['User & Password', 'Username', 'Password'], true)) {
-            $this->edebug('CLIENT -> SERVER: [credentials hidden]', self::DEBUG_CLIENT);
-        } else {
-            $this->edebug('CLIENT -> SERVER: ' . $data, self::DEBUG_CLIENT);
-        }
-        set_error_handler([$this, 'errorHandler']);
-        $result = fwrite($this->smtp_conn, $data);
-        restore_error_handler();
-
-        return $result;
-    }
-
-    /**
-     * Get the latest error.
-     *
-     * @return array
-     */
-    public function getError()
-    {
-        return $this->error;
-    }
-
-    /**
-     * Get SMTP extensions available on the server.
-     *
-     * @return array|null
-     */
-    public function getServerExtList()
-    {
-        return $this->server_caps;
-    }
-
-    /**
-     * Get metadata about the SMTP server from its HELO/EHLO response.
-     * The method works in three ways, dependent on argument value and current state:
-     *   1. HELO/EHLO has not been sent - returns null and populates $this->error.
-     *   2. HELO has been sent -
-     *     $name == 'HELO': returns server name
-     *     $name == 'EHLO': returns boolean false
-     *     $name == any other string: returns null and populates $this->error
-     *   3. EHLO has been sent -
-     *     $name == 'HELO'|'EHLO': returns the server name
-     *     $name == any other string: if extension $name exists, returns True
-     *       or its options (e.g. AUTH mechanisms supported). Otherwise returns False.
-     *
-     * @param string $name Name of SMTP extension or 'HELO'|'EHLO'
-     *
-     * @return string|bool|null
-     */
-    public function getServerExt($name)
-    {
-        if (!$this->server_caps) {
-            $this->setError('No HELO/EHLO was sent');
-
-            return;
-        }
-
-        if (!array_key_exists($name, $this->server_caps)) {
-            if ('HELO' === $name) {
-                return $this->server_caps['EHLO'];
-            }
-            if ('EHLO' === $name || array_key_exists('EHLO', $this->server_caps)) {
-                return false;
-            }
-            $this->setError('HELO handshake was used; No information about server extensions available');
-
-            return;
-        }
-
-        return $this->server_caps[$name];
-    }
-
-    /**
-     * Get the last reply from the server.
-     *
-     * @return string
-     */
-    public function getLastReply()
-    {
-        return $this->last_reply;
-    }
-
-    /**
-     * Read the SMTP server's response.
-     * Either before eof or socket timeout occurs on the operation.
-     * With SMTP we can tell if we have more lines to read if the
-     * 4th character is '-' symbol. If it is a space then we don't
-     * need to read anything else.
-     *
-     * @return string
-     */
-    protected function get_lines()
-    {
-        // If the connection is bad, give up straight away
-        if (!is_resource($this->smtp_conn)) {
-            return '';
-        }
-        $data = '';
-        $endtime = 0;
-        stream_set_timeout($this->smtp_conn, $this->Timeout);
-        if ($this->Timelimit > 0) {
-            $endtime = time() + $this->Timelimit;
-        }
-        $selR = [$this->smtp_conn];
-        $selW = null;
-        while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
-            //Must pass vars in here as params are by reference
-            //solution for signals inspired by https://github.com/symfony/symfony/pull/6540
-            set_error_handler([$this, 'errorHandler']);
-            $n = stream_select($selR, $selW, $selW, $this->Timelimit);
-            restore_error_handler();
-
-            if ($n === false) {
-                $message = $this->getError()['detail'];
-
-                $this->edebug(
-                    'SMTP -> get_lines(): select failed (' . $message . ')',
-                    self::DEBUG_LOWLEVEL
-                );
-
-                //stream_select returns false when the `select` system call is interrupted by an incoming signal, try the select again
-                if (stripos($message, 'interrupted system call') !== false) {
-                    $this->edebug(
-                        'SMTP -> get_lines(): retrying stream_select',
-                        self::DEBUG_LOWLEVEL
-                    );
-                    $this->setError('');
-                    continue;
-                }
-
-                break;
-            }
-
-            if (!$n) {
-                $this->edebug(
-                    'SMTP -> get_lines(): select timed-out in (' . $this->Timelimit . ' sec)',
-                    self::DEBUG_LOWLEVEL
-                );
-                break;
-            }
-
-            //Deliberate noise suppression - errors are handled afterwards
-            $str = @fgets($this->smtp_conn, self::MAX_REPLY_LENGTH);
-            $this->edebug('SMTP INBOUND: "' . trim($str) . '"', self::DEBUG_LOWLEVEL);
-            $data .= $str;
-            // If response is only 3 chars (not valid, but RFC5321 S4.2 says it must be handled),
-            // or 4th character is a space or a line break char, we are done reading, break the loop.
-            // String array access is a significant micro-optimisation over strlen
-            if (!isset($str[3]) || $str[3] === ' ' || $str[3] === "\r" || $str[3] === "\n") {
-                break;
-            }
-            // Timed-out? Log and break
-            $info = stream_get_meta_data($this->smtp_conn);
-            if ($info['timed_out']) {
-                $this->edebug(
-                    'SMTP -> get_lines(): stream timed-out (' . $this->Timeout . ' sec)',
-                    self::DEBUG_LOWLEVEL
-                );
-                break;
-            }
-            // Now check if reads took too long
-            if ($endtime && time() > $endtime) {
-                $this->edebug(
-                    'SMTP -> get_lines(): timelimit reached (' .
-                    $this->Timelimit . ' sec)',
-                    self::DEBUG_LOWLEVEL
-                );
-                break;
-            }
-        }
-
-        return $data;
-    }
-
-    /**
-     * Enable or disable VERP address generation.
-     *
-     * @param bool $enabled
-     */
-    public function setVerp($enabled = false)
-    {
-        $this->do_verp = $enabled;
-    }
-
-    /**
-     * Get VERP address generation mode.
-     *
-     * @return bool
-     */
-    public function getVerp()
-    {
-        return $this->do_verp;
-    }
-
-    /**
-     * Set error messages and codes.
-     *
-     * @param string $message      The error message
-     * @param string $detail       Further detail on the error
-     * @param string $smtp_code    An associated SMTP error code
-     * @param string $smtp_code_ex Extended SMTP code
-     */
-    protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
-    {
-        $this->error = [
-            'error' => $message,
-            'detail' => $detail,
-            'smtp_code' => $smtp_code,
-            'smtp_code_ex' => $smtp_code_ex,
-        ];
-    }
-
-    /**
-     * Set debug output method.
-     *
-     * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it
-     */
-    public function setDebugOutput($method = 'echo')
-    {
-        $this->Debugoutput = $method;
-    }
-
-    /**
-     * Get debug output method.
-     *
-     * @return string
-     */
-    public function getDebugOutput()
-    {
-        return $this->Debugoutput;
-    }
-
-    /**
-     * Set debug output level.
-     *
-     * @param int $level
-     */
-    public function setDebugLevel($level = 0)
-    {
-        $this->do_debug = $level;
-    }
-
-    /**
-     * Get debug output level.
-     *
-     * @return int
-     */
-    public function getDebugLevel()
-    {
-        return $this->do_debug;
-    }
-
-    /**
-     * Set SMTP timeout.
-     *
-     * @param int $timeout The timeout duration in seconds
-     */
-    public function setTimeout($timeout = 0)
-    {
-        $this->Timeout = $timeout;
-    }
-
-    /**
-     * Get SMTP timeout.
-     *
-     * @return int
-     */
-    public function getTimeout()
-    {
-        return $this->Timeout;
-    }
-
-    /**
-     * Reports an error number and string.
-     *
-     * @param int    $errno   The error number returned by PHP
-     * @param string $errmsg  The error message returned by PHP
-     * @param string $errfile The file the error occurred in
-     * @param int    $errline The line number the error occurred on
-     */
-    protected function errorHandler($errno, $errmsg, $errfile = '', $errline = 0)
-    {
-        $notice = 'Connection failed.';
-        $this->setError(
-            $notice,
-            $errmsg,
-            (string) $errno
-        );
-        $this->edebug(
-            "$notice Error #$errno: $errmsg [$errfile line $errline]",
-            self::DEBUG_CONNECTION
-        );
-    }
-
-    /**
-     * Extract and return the ID of the last SMTP transaction based on
-     * a list of patterns provided in SMTP::$smtp_transaction_id_patterns.
-     * Relies on the host providing the ID in response to a DATA command.
-     * If no reply has been received yet, it will return null.
-     * If no pattern was matched, it will return false.
-     *
-     * @return bool|string|null
-     */
-    protected function recordLastTransactionID()
-    {
-        $reply = $this->getLastReply();
-
-        if (empty($reply)) {
-            $this->last_smtp_transaction_id = null;
-        } else {
-            $this->last_smtp_transaction_id = false;
-            foreach ($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
-                $matches = [];
-                if (preg_match($smtp_transaction_id_pattern, $reply, $matches)) {
-                    $this->last_smtp_transaction_id = trim($matches[1]);
-                    break;
-                }
-            }
-        }
-
-        return $this->last_smtp_transaction_id;
-    }
-
-    /**
-     * Get the queue/transaction ID of the last SMTP transaction
-     * If no reply has been received yet, it will return null.
-     * If no pattern was matched, it will return false.
-     *
-     * @return bool|string|null
-     *
-     * @see recordLastTransactionID()
-     */
-    public function getLastTransactionID()
-    {
-        return $this->last_smtp_transaction_id;
-    }
-}
diff --git a/libs/restore.php b/libs/restore.php
index 3157097..dc99bcb 100644
--- a/libs/restore.php
+++ b/libs/restore.php
@@ -14,7 +14,7 @@
 		$res = $sth->execute();
 		$result = $res->fetchArray();
 		$excl = unserialize($result['excludedata']);
-		$excl_str = ($result['backuptype'] == 'full') ? "--exclude 'mybackup'" : "";		if (count($excl) > 0) {
+		$excl_str = ($result['backuptype'] == 'full') ? "--exclude '".trim(MBDIRNAME, '/')."'" : "";		if (count($excl) > 0) {
 			foreach ($excl as $dir) {
 				$pathpart = ($result['backuptype'] == 'part') ? $dir : 'wp-content/'.$dir;
 				$excl_str .= ' --exclude '.$pathpart;
diff --git a/libs/sendgrid/.codeclimate.yml b/libs/sendgrid/.codeclimate.yml
deleted file mode 100644
index bd9c6ec..0000000
--- a/libs/sendgrid/.codeclimate.yml
+++ /dev/null
@@ -1,11 +0,0 @@
----
-engines:
-  duplication:
-    enabled: true
-    config:
-      languages:
-      - php
-  fixme:
-    enabled: true
-  phpmd:
-    enabled: true
diff --git a/libs/sendgrid/.editorconfig b/libs/sendgrid/.editorconfig
deleted file mode 100644
index e18928d..0000000
--- a/libs/sendgrid/.editorconfig
+++ /dev/null
@@ -1,8 +0,0 @@
-root = true
-
-[*.php]
-indent_style = space
-indent_size = 4
-end_of_line = lf
-insert_final_newline = true
-trim_trailing_whitespace = true
diff --git a/libs/sendgrid/.env.sample b/libs/sendgrid/.env.sample
deleted file mode 100644
index 937e999..0000000
--- a/libs/sendgrid/.env.sample
+++ /dev/null
@@ -1 +0,0 @@
-export SENDGRID_API_KEY=''
diff --git a/libs/sendgrid/CHANGELOG.md b/libs/sendgrid/CHANGELOG.md
deleted file mode 100644
index 4caf587..0000000
--- a/libs/sendgrid/CHANGELOG.md
+++ /dev/null
@@ -1,446 +0,0 @@
-# Change Log
-All notable changes to this project will be documented in this file.
-
-This project adheres to [Semantic Versioning](http://semver.org/).
-
-[2020-04-29] Version 7.5.0
---------------------------
-**Library - Fix**
-- [PR #952](https://github.com/sendgrid/sendgrid-php/pull/952): refactor and fix personalization inserts/updates. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-**Library - Feature**
-- [PR #951](https://github.com/sendgrid/sendgrid-php/pull/951): add support for Twilio Email. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-
-[2020-04-01] Version 7.4.6
---------------------------
-**Library - Docs**
-- [PR #947](https://github.com/sendgrid/sendgrid-php/pull/947): support verbiage for login issues. Thanks to [@adamchasetaylor](https://github.com/adamchasetaylor)!
-- [PR #946](https://github.com/sendgrid/sendgrid-php/pull/946): correct params order in example.php. Thanks to [@spaze](https://github.com/spaze)!
-
-
-[2020-03-18] Version 7.4.5
---------------------------
-**Library - Docs**
-- [PR #749](https://github.com/sendgrid/sendgrid-php/pull/749): add @throws to docblock. Thanks to [@iPoul](https://github.com/iPoul)!
-
-
-[2020-03-04] Version 7.4.4
---------------------------
-**Library - Chore**
-- [PR #941](https://github.com/sendgrid/sendgrid-php/pull/941): add PHP 7.4 to Travis and test with lowest dependencies. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-
-[2020-02-19] Version 7.4.3
---------------------------
-**Library - Fix**
-- [PR #918](https://github.com/sendgrid/sendgrid-php/pull/918): resolve deprecation notices when using Composer 1.10(-dev). Thanks to [@kampalex](https://github.com/kampalex)!
-- [PR #939](https://github.com/sendgrid/sendgrid-php/pull/939): drop the prism binary and ignore unneeded files from the archive. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-
-[2020-01-22] Version 7.4.2
---------------------------
-**Library - Docs**
-- [PR #928](https://github.com/sendgrid/sendgrid-php/pull/928): baseline all the templated markdown docs. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-
-[2020-01-09] Version 7.4.1
---------------------------
-**Library - Docs**
-- [PR #710](https://github.com/sendgrid/sendgrid-php/pull/710): correct the *.md files using Grammarly. Thanks to [@myzeprog](https://github.com/myzeprog)!
-- [PR #742](https://github.com/sendgrid/sendgrid-php/pull/742): properly capitalize brands GitHub and SendGrid. Thanks to [@aslafy-z](https://github.com/aslafy-z)!
-- [PR #737](https://github.com/sendgrid/sendgrid-php/pull/737): remove `sudo` requirement for running docker. Thanks to [@jamietanna](https://github.com/jamietanna)!
-
-**Library - Chore**
-- [PR #926](https://github.com/sendgrid/sendgrid-php/pull/926): prep the repo for automated releasing. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-**Library - Fix**
-- [PR #765](https://github.com/sendgrid/sendgrid-php/pull/765): correct typo in PR template from "Sendgrid" to "SendGrid". Thanks to [@JoeRomeo](https://github.com/JoeRomeo)!
-- [PR #757](https://github.com/sendgrid/sendgrid-php/pull/757): remove dead code when setting the subject. Thanks to [@2mt-heuser](https://github.com/2mt-heuser)!
-- [PR #761](https://github.com/sendgrid/sendgrid-php/pull/761): correct the License file path in ReadMe. Thanks to [@sanjaysingh](https://github.com/sanjaysingh)!
-- [PR #770](https://github.com/sendgrid/sendgrid-php/pull/770): update the link for cURL example in Troubleshooting.MD. Thanks to [@music-mind](https://github.com/music-mind)!
-- [PR #887](https://github.com/sendgrid/sendgrid-php/pull/887): correct the mail helper readme link in example. Thanks to [@flashadvocate](https://github.com/flashadvocate)!
-
-
-[2019-12-11] Version 7.4.0
---------------------------
-
-**Library - Fix**
-- [PR #705](https://github.com/sendgrid/sendgrid-php/pull/705): Fixing issue #686: NULL Item in Personalizations. Thanks to [@reisraff](https://github.com/reisraff)!
-- [PR #788](https://github.com/sendgrid/sendgrid-php/pull/788): Fixes #788 - Add missing parameter for addCc and addBcc methods. Thanks to [@hjmsw](https://github.com/hjmsw)!
-
-**Library - Docs**
-- [PR #836](https://github.com/sendgrid/sendgrid-php/pull/836): Update example.php. Add personalization example as per #792. Thanks to [@hjmsw](https://github.com/hjmsw)!
-
-**Library - Feature**
-- [PR #841](https://github.com/sendgrid/sendgrid-php/pull/841): Make $emailAddress on TypeException to be evaluated. Thanks to [@yehudah](https://github.com/yehudah)!
-
-## [7.3.0] - 2019-04-15 ##
-### Fixed
-- PR [#821](https://github.com/sendgrid/sendgrid-php/pull/821): PHP 7.3 support and fix Prism download problem. 
-- Closes [#669](https://github.com/sendgrid/sendgrid-php/issues/669), PR [#670](https://github.com/sendgrid/sendgrid-php/pull/670): Fix Mail::setGlobalSubject(). Thanks to [Spencer Salisbury](https://github.com/smsalisbury) for the solution!
-- Closes [#782](https://github.com/sendgrid/sendgrid-php/issues/782), PR [#783](https://github.com/sendgrid/sendgrid-php/pull/783): Remove references to 'whitelabel'. Thanks to [Chandler Weiner](https://github.com/crweiner) for the solution!
-- Closes [#763](https://github.com/sendgrid/sendgrid-php/issues/763), PR [#764](https://github.com/sendgrid/sendgrid-php/pull/764): Update link to license. Thanks to [Pranjal Vyas](https://github.com/vyaspranjal33) for the solution!
-- PR [#760](https://github.com/sendgrid/sendgrid-php/pull/760): Clean up Prism shell script. Thanks to [gy741](https://github.com/gy741) for the solution!
-- Closes [#739](https://github.com/sendgrid/sendgrid-php/issues/739), PR [#740](https://github.com/sendgrid/sendgrid-php/pull/740): . Thanks to [Alex Borisov](https://github.com/smrtab) for the solution!
-
-### Added
-- PR [#828](https://github.com/sendgrid/sendgrid-php/pull/828): Update Twilio branding, CLA policy.
-- Closes [#768](https://github.com/sendgrid/sendgrid-php/issues/768), PR [#769](https://github.com/sendgrid/sendgrid-php/pull/769): Update prerequisites. Thanks to [Rishabh](https://github.com/Rishabh04-02) for the solution!
-- Closes [#733](https://github.com/sendgrid/sendgrid-php/issues/733), PR [#736](https://github.com/sendgrid/sendgrid-php/pull/736): Update CONTRIBUTING - contribution guideline to branch off development. Thanks to [Alex](https://github.com/myzeprog) for the solution!
-- Closes [#481](https://github.com/sendgrid/sendgrid-php/issues/481), PR [#743](https://github.com/sendgrid/sendgrid-php/pull/743): Added Box attachment example. Thanks to [Joel](https://github.com/semijoelon) for the solution!
-- Closes [#690](https://github.com/sendgrid/sendgrid-php/issues/690), PR [#698](https://github.com/sendgrid/sendgrid-php/pull/698): Update prism version. Thanks to [Gergo Juhasz](https://github.com/geryjuhasz) for the solution!
-
-## [7.2.1] - 2018-09-18 ##
-### Fixed
-- Closes [#671](https://github.com/sendgrid/sendgrid-php/issues/671), PR [#689](https://github.com/sendgrid/sendgrid-php/pull/689): isBase64 function returning incorrect. Thanks to [Jmky](https://github.com/Jmky) for the solution!
-
-## [7.2.0] - 2018-08-15 ##
-### Added
-- Closes [#648](https://github.com/sendgrid/sendgrid-php/issues/648), PR [#657](https://github.com/sendgrid/sendgrid-php/pull/657): Allow for Dynamic Templates Implementation. Thanks to [Mike Willbanks](https://github.com/mwillbanks) for the PR!
-
-## [7.1.1] - 2018-08-15 ##
-### Fixed
-- Closes [#667](https://github.com/sendgrid/sendgrid-php/issues/667), PR [#668](https://github.com/sendgrid/sendgrid-php/pull/668): isBase64 function fix. Thanks to [Tigran M](https://github.com/developer-devPHP) for bringing this to our attention!
-
-## [7.1.0] - 2018-08-14 ##
-### Added
-
-- Closes [#612](https://github.com/sendgrid/sendgrid-php/issues/612), PR [#652](https://github.com/sendgrid/sendgrid-php/pull/652): Fixes #612 Add TypeException and include type validations in classes inside mail/. Thanks to [James Harding](https://github.com/hjmsw) for the PR!
-- Closes [#551](https://github.com/sendgrid/sendgrid-php/issues/551), PR [#571](https://github.com/sendgrid/sendgrid-php/pull/571): Add ability to impersonate subuser. Thanks to [Stian Prestholdt](https://github.com/stianpr) for the PR!
-- Closes [#617](https://github.com/sendgrid/sendgrid-php/issues/617), PR [#651](https://github.com/sendgrid/sendgrid-php/pull/651): Add try / catch to examples. Thanks to [James Harding](https://github.com/hjmsw) for the PR!
-- Closes [#619](https://github.com/sendgrid/sendgrid-php/issues/619), PR [#620](https://github.com/sendgrid/sendgrid-php/pull/620): PHPDoc & code improvements. Thanks to [Martijn Melchers](https://github.com/martijnmelchers) for the PR!
-- Closes [#610](https://github.com/sendgrid/sendgrid-php/issues/610), PR [#628](https://github.com/sendgrid/sendgrid-php/pull/628): Removes unnecessary linter warning from phpcs. Thanks to [James Harding](https://github.com/hjmsw) for the PR!
-- Closes [#608](https://github.com/sendgrid/sendgrid-php/issues/611), PR [#626](https://github.com/sendgrid/sendgrid-php/pull/626): Add check so that getContents() always returns content with MimeType text/plain first in array of Content objects. Thanks to [James Harding](https://github.com/hjmsw) for the PR!
-- Closes [#611](https://github.com/sendgrid/sendgrid-php/issues/611), PR [#618](https://github.com/sendgrid/sendgrid-php/pull/618): Attachments now automatically get base64 encoded if they are not already. Thanks to [Martijn Melchers](https://github.com/martijnmelchers) for the PR!
-- PR [#661](https://github.com/sendgrid/sendgrid-php/pull/661): Add Code Triage tag. Thanks to [Anshul Singhal](https://github.com/af4ro) for the PR!
-- PR [#663](https://github.com/sendgrid/sendgrid-php/pull/663): Improve Contributing.md readability. Thanks to [Anshul Singhal](https://github.com/af4ro) for the PR!
-
-### Fixed
-- PR [#631](https://github.com/sendgrid/sendgrid-php/pull/631): Broken documentation link. Thanks to [David Duman](https://github.com/dvdnhm) for the PR!
-- PR [#633](https://github.com/sendgrid/sendgrid-php/pull/633): Fixes for non-composer environments. Thanks to [Tom Gordon](https://github.com/apcro) for the PR!
-- PR [#634](https://github.com/sendgrid/sendgrid-php/pull/634): Fixes missing file extension. Thanks to [Muberra Duman Demirtepe](https://github.com/muberraduman) for the PR!
-- PR [#658](https://github.com/sendgrid/sendgrid-php/pull/658): Corrected PHP Syntax. Thanks to [David Passmore](https://github.com/davcpas1234) for the PR!
-- Fixes [#624](https://github.com/sendgrid/sendgrid-php/issues/624), PR [#625](https://github.com/sendgrid/sendgrid-php/pull/625): Fix setGroupsToDisplay's handling of array arguments. Thanks to [Mo Ismailzai](https://github.com/moismailzai) for the PR!
-
-## [7.0.0] - 2018-05-19 ##
-### BREAKING CHANGE
-
-Thanks to the [strong support and feedback of the SendGrid PHP community](https://github.com/sendgrid/sendgrid-php/issues/434), we have a new version of this SDK that should be a big improvement in the developer experience for this SDK.
-
-In particular, I'd like to make special mention of [@caseyw](https://github.com/caseyw), [@vitya1](https://github.com/vitya1), [@Braunson](https://github.com/Braunson), [@cbschuld](https://github.com/cbschuld), [@paoga87](https://github.com/paoga87), [@Taluu](https://github.com/Taluu), [@mazanax](https://github.com/mazanax), [@ninsuo](https://github.com/ninsuo), [@ianh2](https://github.com/ianh2), [@WadeShuler](https://github.com/WadeShuler), [@jaimehing](https://github.com/jaimehing), [@KnightAR](https://github.com/KnightAR), [@alextech](https://github.com/alextech) (my apologies if I've missed you)
-
-Since this is a major departure from v6.X, we advise you refactor your code according to the documentation found in the [README](https://github.com/sendgrid/sendgrid-php/blob/master/README.md) and [USE_CASES](https://github.com/sendgrid/sendgrid-php/blob/master/USE_CASES.md) files. We hope you find the new interface much easier to work with. Please open an [issue](https://github.com/sendgrid/sendgrid-php/issues) or PR if you run into any trouble or have any feedback. 
-
-If you wish to continue using previous versions of this SDK, no problem. However, we will not be updating versions less than v7 except for critical bugs and/or security issues.
-
-We hope this will be the last breaking change in the foreseeable future; that said, let the iterations begin!
-
-## [6.2.0] - 2018-03-28 ##
-### Added
-- Closes [#454](https://github.com/sendgrid/sendgrid-php/issues/454), PR [#502](https://github.com/sendgrid/sendgrid-php/pull/502): 
-Add helper for adding new recipients to your contactdb via a webform, thanks to [Kraig Hufstedler](https://github.com/kraigh) for the PR!
-
-- Closes [#487](https://github.com/sendgrid/sendgrid-php/issues/487), PR [#506](https://github.com/sendgrid/sendgrid-php/pull/506): 
-Add helper to get all stats from a specified data range, thanks to [Milos Pejanovic](https://github.com/runz0rd) for the PR!
-
-- Closes [#368](https://github.com/sendgrid/sendgrid-php/issues/368), PR [#511](https://github.com/sendgrid/sendgrid-php/pull/511): 
-Add support for commas and semicolns in email name, thanks to [Quentin Ligier](https://github.com/qligier) for the PR!
-
-- Closes [#491](https://github.com/sendgrid/sendgrid-php/issues/491), PR [#493](https://github.com/sendgrid/sendgrid-php/pull/493: 
-Allow for setting attachment content from path, thanks to [rparpa](https://github.com/rparpa) for the PR!
-
-## [6.1.0] - 2018-03-27 ##
-### Added
-- PR [#512](https://github.com/sendgrid/sendgrid-php/pull/512): Omit PHP closing tag in use case sample, thanks to [Sébastien Santoro](https://github.com/dereckson) for the PR!
-
-- PR [#575](https://github.com/sendgrid/sendgrid-php/pull/575): Add an example to the README.md describing how to send emails as HTML as the content type, thanks to [Benjamin Manford](https://github.com/manfordbenjamin) for the PR!
-
-- Closes [#547](https://github.com/sendgrid/sendgrid-php/issues/547), PR [#549](https://github.com/sendgrid/sendgrid-php/pull/549): 
-Added Code Review to Contributing.md, thanks to [tomhorvat](https://github.com/tomhorvat) for the PR!
-
-- PR [#565](https://github.com/sendgrid/sendgrid-php/pull/565): Add PHP 7.1 and 7.2 to Travis build matrix, thanks to [Emir Beganović](https://github.com/emirb) for the PR!
-
-- PR [#577](https://github.com/sendgrid/sendgrid-php/pull/577): Update PHP Version terms, thanks to [Siddhant Sharma](https://github.com/ssiddhantsharma) for the PR!
-
-- Closes [#540](https://github.com/sendgrid/sendgrid-php/issues/540), PR [#543](https://github.com/sendgrid/sendgrid-php/pull/543): 
-Feature/split unit tests, thanks to [Owen Voke](https://github.com/pxgamer) for the PR!
-
-- Closes [#441](https://github.com/sendgrid/sendgrid-php/issues/441), PR [#467](https://github.com/sendgrid/sendgrid-php/pull/467): 
-Add deploy to heroku button, thanks to [pangaunn](https://github.com/pangaunn) for the PR!
-
-- Closes [#423](https://github.com/sendgrid/sendgrid-php/issues/423), PR [#510](https://github.com/sendgrid/sendgrid-php/pull/510): 
-Adding Google App engine installation with composer instructions, thanks to [Nalin Bhardwaj](https://github.com/nalinbhardwaj) for the PR!
-
-- Closes [#541](https://github.com/sendgrid/sendgrid-php/issues/541), PR [#542](https://github.com/sendgrid/sendgrid-php/pull/542): 
-Added CodeCov support, thanks to [Owen Voke](https://github.com/pxgamer) for the PR!
-
-- PR [#539](https://github.com/sendgrid/sendgrid-php/pull/539): Rename LICENSE.txt to md, thanks to [Ankit Jain](https://github.com/ankitjain28may) for the PR!
-
-- Closes [#436](https://github.com/sendgrid/sendgrid-php/issues/436), PR [#535](https://github.com/sendgrid/sendgrid-php/pull/535): Add docker development setup, thanks to [Samundra Shrestha](https://github.com/samundra) for the PR!
-
-- Closes [#532](https://github.com/sendgrid/sendgrid-php/issues/532), PR [#537](https://github.com/sendgrid/sendgrid-php/pull/537): Add license date range unit test, thanks to [uppe-r](https://github.com/uppe-r) for the PR!
-
-- Closes [#533](https://github.com/sendgrid/sendgrid-php/issues/533), PR [#536](https://github.com/sendgrid/sendgrid-php/pull/536): Add unit test to check that specific files exist in repo, thanks to [Bertus Steenberg](https://github.com/bertuss) for the PR!
-
-- Closes [#524](https://github.com/sendgrid/sendgrid-php/issues/524), PR [#527](https://github.com/sendgrid/sendgrid-php/pull/527): Created code climate YML file, thanks to [Prashu Chaudhary](https://github.com/prashuchaudhary) for the PR!
-
-- Closes [#520](https://github.com/sendgrid/sendgrid-php/issues/520), PR [#523](https://github.com/sendgrid/sendgrid-php/pull/523): Added sample env file, thanks to [Joey Lee](https://github.com/yeoji) for the PR!
-
-- PR [#519](https://github.com/sendgrid/sendgrid-php/pull/519): Add github PR template, thanks to [Alex](https://github.com/pushkyn) for the PR!
-
-- PR [#513](https://github.com/sendgrid/sendgrid-php/pull/513): Update to PHP 7.0.0 refactor - Fix syntax error in refactor documentation, thanks to [Sébastien Santoro](https://github.com/dereckson) for the PR!
-
-- PR [#505](https://github.com/sendgrid/sendgrid-php/pull/505): Update README.md with additional badges, thanks to [Lalit Vijay](https://github.com/lalitvj) for the PR!
-
-- Closes [#500](https://github.com/sendgrid/sendgrid-php/issues/500), PR [#504](https://github.com/sendgrid/sendgrid-php/pull/504): SEO Friendly Section links, thanks to [Dharma Saputra](https://github.com/ladhadha) for the PR!
-
-- PR [#503](https://github.com/sendgrid/sendgrid-php/pull/503): Added new badges to README.md, thanks to [Alex](https://github.com/myzeprog) for the PR!
-
-- Closes [#492](https://github.com/sendgrid/sendgrid-php/issues/492), PR [#494](https://github.com/sendgrid/sendgrid-php/pull/494): Demonstrate how to review the request body for troubleshooting, thanks to [Alex](https://github.com/myzeprog) for the PR!
-
-- PR [#476](https://github.com/sendgrid/sendgrid-php/pull/476): Update README.md with license information, thanks to [Tarmo Leppänen](https://github.com/tarlepp) for the PR!
-
-- PR [#475](https://github.com/sendgrid/sendgrid-php/pull/475): Add documentation for setting up domain whitelabel, thanks to [Sourav Sarkar](https://github.com/amsourav) for the PR!
-
-- PR [#468](https://github.com/sendgrid/sendgrid-php/pull/463): Changes the recommendation to use composer as recommended source, thanks to [Gabriela D'Ávila Ferrara](https://github.com/gabidavila) for the PR!
-
-- PR [#463](https://github.com/sendgrid/sendgrid-php/pull/463): Add TROUBLESHOOTING.md section about fixing error 415, thanks to [AlbinoDrought](https://github.com/AlbinoDrought) for the PR!
-
-- PR [#456](https://github.com/sendgrid/sendgrid-php/pull/456): Added Code of Conduct, thanks to [Rubemlrm](https://github.com/Rubemlrm) for the PR!
-
-- PR [#439](https://github.com/sendgrid/sendgrid-php/pull/439): Update to PHP 7.0.0 refactor - Removal of Collections, thanks to [Joseph Opanel](https://github.com/jopanel) for the PR!
-
-- PR [#416](https://github.com/sendgrid/sendgrid-php/pull/416): Add release notifications, thanks to [Gabriel Krell](https://github.com/gabrielkrell) for the PR!
-
-- PR [#415](https://github.com/sendgrid/sendgrid-php/pull/415): Updated example.php to fix that there was no way for the sections to get substituted without their being a substitution that calls them, thanks to [Kyle Roberts](https://github.com/kylearoberts) for the PR!
-
-### Fixed
-- PR [#545](https://github.com/sendgrid/sendgrid-php/pull/545): Fix typo CONTRIBUTING.md, thanks to [thepriefy](https://github.com/thepriefy) for the PR!
-
-- PR [#588](https://github.com/sendgrid/sendgrid-php/pull/588): Fix broken unit tests
-
-- PR [#576](https://github.com/sendgrid/sendgrid-php/pull/576): API level addressing of the string-only in addSubstitution arg rule. Every long integer triggers a bad request, thanks to [Ezequiel Villarreal](https://github.com/saruman) for the PR!
-
-- PR [#517](https://github.com/sendgrid/sendgrid-php/pull/517): Fix typos in USAGE.md, thanks to [Anatoly](https://github.com/anatolyyyyyy) for the PR!
-
-- PR [#530](https://github.com/sendgrid/sendgrid-php/pull/530): Changed the license period., thanks to [Siddhant Sharma](https://github.com/ssiddhantsharma) for the PR!
-
-- PR [#514](https://github.com/sendgrid/sendgrid-php/pull/514): Don't close img tag in HTML, thanks to [Sébastien Santoro](https://github.com/dereckson) for the PR!
-
-- PR [#507](https://github.com/sendgrid/sendgrid-php/pull/507): Fix typos in various files, thanks to [Brandon Smith](https://github.com/brandon93s) for the PR!
-
-- Fixes [#336](https://github.com/sendgrid/sendgrid-php/issues/336), PR [#479](https://github.com/sendgrid/sendgrid-php/pull/479): Incorrect documentation path fixed, thanks to [Valerian Pereira](https://github.com/valerianpereira) for the PR! 
-
-- PR [#465](https://github.com/sendgrid/sendgrid-php/pull/465): Fix typo in README.md, thanks to [shra1cumar](https://github.com/shra1cumar) for the PR!
-
-- PR [#449](https://github.com/sendgrid/sendgrid-php/pull/449): Fix typos in USAGE.md, thanks to [Cícero Pablo](https://github.com/ciceropablo) for the PR!
-
-- PR [#448](https://github.com/sendgrid/sendgrid-php/pull/448): Fix typos in TROUBLESHOOTING.md, thanks to [Cícero Pablo](https://github.com/ciceropablo) for the PR!
-
-- PR [#435](https://github.com/sendgrid/sendgrid-php/pull/435): Change spam_report() to spam_reports() in documentation and examples, thanks to [mrmxs](https://github.com/mrmxs) for the PR!
-
-- PR [#431](https://github.com/sendgrid/sendgrid-php/pull/431): Fixed minor typo during Mail creation, thanks to [joeldixon66](https://github.com/joeldixon66) for the PR!
-
-## [6.0.0] - 2017-06-30 ##
-### BREAKING CHANGE
-- PR #408: Update Mail constructor to signify which parameters are required for sending all email
-- The `Mail()` constructor now requires `$from`, `$subject`, `$to` and `$content` parameters like so: `Mail($from, $subject, $to, $content)`. Those are the minimally required parameters to send an email.
-- Thanks to [Casey Wilson](https://github.com/caseyw) for the PR!
-
-## [5.6.2] - 2017-06-29 ##
-### Fix
-- PR #410: Adding name for ReplyTo for issue #390
-- Thanks to [Casey Wilson](https://github.com/caseyw) for the PR!
-
-## [5.6.1] - 2017-06-26 ##
-### Fix
-- Versioning mistake (forgot the .0 at the end)
-
-## [5.6.0] - 2017-06-26 ##
-### Added
-- Pull #405: Updating docs and non-composer includes
-- Thanks to [Casey Wilson](https://github.com/caseyw) for the PR!
-
-## [5.5.1] - 2017-05-18 ##
-### Fixed
-- Pull #396: Use `print_r` instead of `echo` on Arrays
-- Thanks to [Ryan P.C. McQuen](https://github.com/ryanpcmcquen) for the PR!
-
-## [5.5.0] - 2017-05-04 ##
-### Added
-- Pull #393: Update [php-http-client](https://github.com/sendgrid/php-http-client) dependency
-- [v3.6](https://github.com/sendgrid/php-http-client/releases/tag/v3.6.0): Pass the curlOptions to the client in buildClient
-- [v3.7](https://github.com/sendgrid/php-http-client/releases/tag/v3.7.0): Added ability to get headers as associative array
-
-## [5.4.2] - 2017-04-18 ##
-### Fixes
-- Fixes #292
-- Removes Prism file in sendgrid-php.zip
-
-## [5.4.1] - 2017-04-04 ##
-### Added
-- Pull #373
-- PSR1 & PSR2 Conversion
-- Thanks to [Braunson Yager](https://github.com/Braunson) for the PR!
-
-## [5.4.0] - 2017-03-16 ##
-### Added
-- Pull #337
-- API level addressing of the string-only custom arg rule
-- Thanks to [Chris Schuld](https://github.com/cbschuld) for the PR!
-
-## [5.3.0] - 2017-03-15 ##
-### Added
-- Pull #367
-- UTF8 encoding forced for content value and message subject
-- Thanks to [Chris Schuld](https://github.com/cbschuld) for the PR!
-
-## [5.2.3] - 2017-03-03 ##
-### Fixed
-- Pull #334
-- Fixed serialization of empty JSON objects, fixes #332 & #314
-- Thanks to [Matthew Dreyer](https://github.com/Dreyer) for the PR!
-
-## [5.2.2] - 2017-03-03 ##
-### Fixed
-- Pull #323
-- Typo 'user' for 'usr'
-- Thanks to [Mike Ralphson](https://github.com/MikeRalphson) for the PR!
-
-## [5.2.1] - 2017-03-01 ##
-### Fixed
-- Pull #353
-- Fixed Issue #352
-- Relative path fix for background jobs
-- Thanks to [Tarcísio Zotelli Ferraz](https://github.com/tarcisiozf) for the PR!
-
-## [5.2.0] - 2017-02-23 ##
-### Added
-- Pull #346
-- Allow passing curlOptions to the client
-- Thanks to [Taluu](https://github.com/sendgrid/sendgrid-php/pull/346) for the PR!
-
-## [5.1.2] - 2016-10-11 ##
-### Added
-- Pull #330, Fixes #320
-- Delete subaccounts returns 200 issue resolved
-- The fix happened at the [php-http-client](https://github.com/sendgrid/php-http-client/releases/tag/v3.5.1) dependency.
-- Thanks to [emil](https://github.com/emilva) for the PR!
-
-## [5.1.1] - 2016-10-11 ##
-### Added
-- Pull #307, Fixes #276
-- Adds phpdoc and style fixes
-- Thanks to [Avishkar Autar](https://github.com/aautar) for the PR!
-
-## [5.1.0] - 2016-09-29 ##
-### Fixed
-- Pull #295: [Upgrade sendgrid/php-http-client](https://github.com/sendgrid/sendgrid-php/pull/295/files)
-- This adds getters for certain properties, please see [this pull request](https://github.com/sendgrid/php-http-client/pull/9) for details
-- Thanks to [Arjan Keeman](https://github.com/akeeman) for the pull request!
-
-## [5.0.9] - 2016-09-13 ##
-### Fixed
-- Pull request #289: [Replace "\jsonSerializable" with "\JsonSerializable" ](https://github.com/sendgrid/sendgrid-php/pull/289)
-- Thanks to [Issei.M](https://github.com/issei-m) for the pull request!
-
-## [5.0.8] - 2016-08-24 ##
-### Added
-- Table of Contents in the README
-- Added a [USE_CASES.md](https://github.com/sendgrid/sendgrid-php/blob/master/USE_CASES.md) section, with the first use case example for transactional templates
-
-## [5.0.7] - 2016-07-25 ##
-### Added
-- [Troubleshooting](https://github.com/sendgrid/sendgrid-php/blob/master/TROUBLESHOOTING.md) section
-
-## [5.0.6] - 2016-07-20 ##
-### Added
-- README updates
-- Update introduction blurb to include information regarding our forward path
-- Update the v3 /mail/send example to include non-helper usage
-- Update the generic v3 example to include non-fluent interface usage
-
-## [5.0.5] - 2016-07-12 ##
-### Added
-- Update docs, unit tests and examples to include Sender ID
-
-## [5.0.4] - 2016-07-07 ##
-### Added
-- Tests now mocked automatically against [prism](https://stoplight.io/prism/)
-
-## [5.0.3] - 2016-07-05 ##
-### Updated
-- Content based on our updated [Swagger/OAI doc](https://github.com/sendgrid/sendgrid-oai)
-
-## [5.0.2] - 2016-07-05 ##
-### Added
-- Accept: application/json header per https://sendgrid.com/docs/API_Reference/Web_API_v3/How_To_Use_The_Web_API_v3/requests.html
-
-### Updated
-- Content based on our updated [Swagger/OAI doc](https://github.com/sendgrid/sendgrid-oai)
-
-## [5.0.1] - 2016-06-17 ##
-### Fixed
-- Issue with packaged version for non-composer uses
-
-## [5.0.0] - 2016-06-13 ##
-### Added
-- Breaking change to support the v3 Web API
-- New HTTP client
-- v3 Mail Send helper
-
-## [v4.0.4] - (2016-02-18) ##
-### Added
-- Ability to add scopes to API Keys endpoint [POST]
-
-## [v4.0.3] - (2016-02-18) ##
-### Added
-- API Keys endpoint [PUT]
-
-## [v4.0.2] - (2015-12-15) ##
-### Added
-- Tests for API Keys endpoint [POST, PATCH, DELETE]
-
-## [v4.0.1] - (2015-12-03) ##
-### Fixed
-- HTTP 406 Not Acceptable Errors [#177](https://github.com/sendgrid/sendgrid-php/issues/177)
-
-## [v4.0.0] - (2015-10-16) ##
-### Added
-- Added support for accessing the [SendGrid Web API v3 endpoints](https://sendgrid.com/docs/API_Reference/Web_API_v3/index.html)
-- Implemented part of the /api_keys, /groups and /suppressions endpoints
-
-## [v3.2.0] - (2015-05-13) ##
-
-### Added
-- Specify Guzzle proxy via [#149](https://github.com/sendgrid/sendgrid-php/pull/149)
-- Option to disable exception raising
-
-## [v3.1.0] - (2015-04-27)
-### Added
-- Support for API keys
-
-## [v3.0.0] - (2015-04-14)
-### Fixed
-- CC and BCC not working with SMTPAPI To
-
-### Changed
-- **Breaking:** A `\SendGrid\Exception` is now raised when response is not 200
-- **Breaking:** `addTo` now uses the Web API parameter as opposed to the SMTPAPI Header. Substitutions will most likely break unless you update to use `addSmtpapiTo`
-- The library now depends on Guzzle3
-- Major refactoring
-
-### Added
-- **Breaking:** `send()` now returns an instance of `\SendGrid\Response`
-- Numerous missing methods for new functionality
-- `addSmtpapiTo` for using the SMTPAPI To
-
-## [v2.2.1] - (2014-01-29)
-### Fixed
-- Fix turn_off_ssl_verification option via [#123](https://github.com/sendgrid/sendgrid-php/pull/123)
-
-## [v2.2.0] - (2014-01-12)
-### Changed
-- Remove [Unirest](https://github.com/Mashape/unirest-php/) and replace with native cURL
-- Add CHANGELOG.md
diff --git a/libs/sendgrid/CODE_OF_CONDUCT.md b/libs/sendgrid/CODE_OF_CONDUCT.md
deleted file mode 100644
index 2f0727e..0000000
--- a/libs/sendgrid/CODE_OF_CONDUCT.md
+++ /dev/null
@@ -1,73 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socio-economic status, nationality, personal
-appearance, race, religion, or sexual identity and orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-- Using welcoming and inclusive language
-- Being respectful of differing viewpoints and experiences
-- Gracefully accepting constructive criticism
-- Focusing on what is best for the community
-- Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-- The use of sexualized language or imagery and unwelcome sexual attention or
-  advances
-- Trolling, insulting/derogatory comments, and personal or political attacks
-- Public or private harassment
-- Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
-- Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at open-source@twilio.com. All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
-
-[homepage]: https://www.contributor-covenant.org
diff --git a/libs/sendgrid/CONTRIBUTING.md b/libs/sendgrid/CONTRIBUTING.md
deleted file mode 100644
index d9d4505..0000000
--- a/libs/sendgrid/CONTRIBUTING.md
+++ /dev/null
@@ -1,198 +0,0 @@
-Hello! Thank you for choosing to help contribute to one of the Twilio SendGrid open source libraries. There are many ways you can contribute and help is always welcome. We simply ask that you follow the following contribution policies.
-
-All third party contributors acknowledge that any contributions they provide will be made under the same open source license that the open source project is provided under.
-
-- [Feature Request](#feature-request)
-- [Submit a Bug Report](#submit-a-bug-report)
-  - [Please use our Bug Report Template](#please-use-our-bug-report-template)
-- [Improvements to the Codebase](#improvements-to-the-codebase)
-  - [Development Environment](#development-environment)
-    - [Install and Run Locally](#install-and-run-locally)
-      - [Prerequisites](#prerequisites)
-      - [Initial setup:](#initial-setup)
-  - [Environment Variables](#environment-variables)
-      - [Execute:](#execute)
-- [Understanding the Code Base](#understanding-the-code-base)
-- [Testing](#testing)
-- [Style Guidelines & Naming Conventions](#style-guidelines--naming-conventions)
-- [Creating a Pull Request<a name="creating_a_pull_request"></a>](#creating-a-pull-requesta-name%22creatingapullrequest%22a)
-- [Code Reviews](#code-reviews)
-
-<a name="roadmap"></a>
-We use [Milestones](https://github.com/sendgrid/sendgrid-php/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community review, comments, suggestions, and additional PRs are welcomed and encouraged.
-
-There are a few ways to contribute, which we'll enumerate below:
-
-<a name="feature-request"></a>
-## Feature Request
-
-If you'd like to make a feature request, please read this section.
-
-The GitHub issue tracker is the preferred channel for library feature requests, but please respect the following restrictions:
-
-- Please **search for existing issues** in order to ensure we don't have duplicate bugs/feature requests.
-- Please be respectful and considerate of others when commenting on issues
-
-<a name="submit-a-bug-report"></a>
-## Submit a Bug Report
-
-Note: DO NOT include your credentials in ANY code examples, descriptions, or media you make public.
-
-A software bug is a demonstrable issue in the code base. In order for us to diagnose the issue and respond as quickly as possible, please add as much detail as possible into your bug report.
-
-Before you decide to create a new issue, please try the following:
-
-1. Check the GitHub issues tab if the identified issue has already been reported, if so, please add a +1 to the existing post.
-2. Update to the latest version of this code and check if the issue has already been fixed
-3. Copy and fill in the Bug Report Template we have provided below
-
-### Please use our Bug Report Template
-
-In order to make the process easier, we've included a [sample bug report template](https://github.com/sendgrid/sendgrid-php/blob/master/ISSUE_TEMPLATE.md) (borrowed from [Ghost](https://github.com/TryGhost/Ghost/)). The template uses [GitHub flavored markdown](https://help.github.com/articles/github-flavored-markdown/) for formatting.
-
-<a name="improvements-to-the-codebase"></a>
-## Improvements to the Codebase
-
-We welcome direct contributions to the sendgrid-php code base. Thank you!
-
-Please note that we utilize the [Gitflow Workflow](https://www.atlassian.com/git/tutorials/comparing-workflows/gitflow-workflow) for Git to help keep project development organized and consistent.
-
-### Development Environment ###
-
-#### Install and Run Locally ####
-
-##### Prerequisites #####
-
-- PHP 5.6, 7.0, 7.1 or 7.2
-
-##### Initial setup: #####
-
-```bash
-git clone https://github.com/sendgrid/sendgrid-php.git
-cd sendgrid-php
-composer install
-```
-
-### Environment Variables
-
-First, get your free Twilio SendGrid account [here](https://sendgrid.com/free?source=sendgrid-php).
-
-Next, update your environment with your [SENDGRID_API_KEY](https://app.sendgrid.com/settings/api_keys).
-
-```bash
-echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
-echo "sendgrid.env" >> .gitignore
-source ./sendgrid.env
-```
-
-##### Execute: #####
-
-See the [examples folder](https://github.com/sendgrid/sendgrid-php/tree/master/examples) or [README](https://github.com/sendgrid/sendgrid-php/blob/master/README.md) to get started quickly.
-
-If you are using composer, replace <PATH_TO> with the path to your `vendor/autoload.php`. Otherwise, include lib/loader.php.
-
-<a name="understanding-the-codebase"></a>
-## Understanding the Code Base
-
-**/examples**
-
-Working examples that demonstrate usage.
-
-```bash
-php examples/example.php
-```
-
-**/test/unit**
-
-Unit tests for the HTTP client.
-
-**/test/integration**
-
-Unit tests for the HTTP client.
-
-**/lib**
-
-The interface to the Twilio SendGrid API. The subfolders are helpers.
-
-<a name="testing"></a>
-## Testing
-
-All PRs require passing tests before the PR will be reviewed.
-
-All test files are in the [`/test/unit`](https://github.com/sendgrid/sendgrid-php/tree/master/test/unit) directory.
-
-For the purposes of contributing to this repo, please update or add relevant test files here(https://github.com/sendgrid/sendgrid-php/tree/master/test) file with tests as you modify the code.
-
-To run the tests locally, please review [this documentation](https://github.com/sendgrid/sendgrid-php/tree/master/docker).
-
-<a name="style-guidelines-and-naming-conventions"></a>
-## Style Guidelines & Naming Conventions
-
-Generally, we follow the style guidelines as suggested by the official language. However, we ask that you conform to the styles that already exist in the library. If you wish to deviate, please explain your reasoning.
-
-- [PSR2 Coding Standards](http://www.php-fig.org/psr/psr-2/)
-
-Please run your code through:
-
-- [PHP Code Sniffer](https://github.com/squizlabs/PHP_CodeSniffer)
-
-## Creating a Pull Request<a name="creating_a_pull_request"></a>
-
-1. [Fork](https://help.github.com/fork-a-repo/) the project, clone your fork,
-   and configure the remotes:
-
-   ```bash
-   # Clone your fork of the repo into the current directory
-   git clone https://github.com/sendgrid/sendgrid-php
-   
-   # Navigate to the newly cloned directory
-   cd sendgrid-php
-   
-   # Assign the original repo to a remote called "upstream"
-   git remote add upstream https://github.com/sendgrid/sendgrid-php
-   ```
-
-2. If you cloned a while ago, get the latest changes from upstream:
-
-   ```bash
-   git checkout <dev-branch>
-   git pull upstream <dev-branch>
-   ```
-
-3. Create a new topic branch off the `development` branch to
-   contain your feature, change, or fix:
-
-   ```bash
-   git checkout development
-   git checkout -b <topic-branch-name>
-   ```
-
-4. Commit your changes in logical chunks. Please adhere to these [git commit
-   message guidelines](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html)
-   or your code is unlikely to be merged into the main project. Use Git's
-   [interactive rebase](https://help.github.com/articles/interactive-rebase)
-   feature to tidy up your commits before making them public.
-
-4a. Create tests.
-
-4b. Create or update the example code that demonstrates the functionality of this change to the code.
-
-5. Locally merge (or rebase) the upstream `development` branch into your topic branch:
-
-   ```bash
-   git pull [--rebase] upstream development
-   ```
-
-6. Push your topic branch up to your fork:
-
-   ```bash
-   git push origin <topic-branch-name>
-   ```
-
-7. [Open a Pull Request](https://help.github.com/articles/using-pull-requests/)
-	with a clear title and description against the `development` branch. All tests must be passing before we will review the PR.
-
-<a name="code-reviews"></a>
-## Code Reviews
-
-If you can, please look at open PRs and review them. Give feedback and help us merge these PRs much faster! If you don't know how, GitHub has some [great information on how to review a Pull Request](https://help.github.com/articles/about-pull-request-reviews/).
diff --git a/libs/sendgrid/ISSUE_TEMPLATE.md b/libs/sendgrid/ISSUE_TEMPLATE.md
deleted file mode 100644
index 31c15b6..0000000
--- a/libs/sendgrid/ISSUE_TEMPLATE.md
+++ /dev/null
@@ -1,26 +0,0 @@
-<!--
-If this is a feature request, make sure you search Issues for an existing request before creating a new one!
--->
-
-### Issue Summary
-A summary of the issue and the environment in which it occurs. If suitable, include the steps required to reproduce the bug. Please feel free to include screenshots, screencasts, or code examples.
-
-### Steps to Reproduce
-1. This is the first step
-2. This is the second step
-3. Further steps, etc.
-
-### Code Snippet
-```php
-# paste code here
-```
-
-### Exception/Log
-```
-# paste exception/log here
-```
-
-### Technical details:
-* sendgrid-php version:
-* php version:
-
diff --git a/libs/sendgrid/LICENSE.md b/libs/sendgrid/LICENSE.md
deleted file mode 100644
index 29aba59..0000000
--- a/libs/sendgrid/LICENSE.md
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (C) 2020, Twilio SendGrid, Inc. <help@twilio.com>
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do
-so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/libs/sendgrid/Makefile b/libs/sendgrid/Makefile
deleted file mode 100644
index c4bdf19..0000000
--- a/libs/sendgrid/Makefile
+++ /dev/null
@@ -1,16 +0,0 @@
-.PHONY: clean install ci-install test bundle
-
-clean:
-	@rm -rf vendor composer.lock sendgrid-php.zip
-
-install: clean
-	composer install
-
-ci-install: clean
-	composer install --no-dev
-
-test: install
-	vendor/bin/phpunit test/unit --filter test*
-
-bundle: ci-install
-	zip -r sendgrid-php.zip . -x \*.git\* \*composer.json\* \*scripts\* \*test\* \*.travis.yml\* \*prism\*
diff --git a/libs/sendgrid/PULL_REQUEST_TEMPLATE.md b/libs/sendgrid/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 215059a..0000000
--- a/libs/sendgrid/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,31 +0,0 @@
-<!--
-We appreciate the effort for this pull request but before that please make sure you read the contribution guidelines, then fill out the blanks below.
-
-Please format the PR title appropriately based on the type of change:
-  <type>[!]: <description>
-Where <type> is one of: docs, chore, feat, fix, test.
-Add a '!' after the type for breaking changes (e.g. feat!: new breaking feature).
-
-**All third-party contributors acknowledge that any contributions they provide will be made under the same open-source license that the open-source project is provided under.**
-
-Please enter each Issue number you are resolving in your PR after one of the following words [Fixes, Closes, Resolves]. This will auto-link these issues and close them when this PR is merged!
-e.g.
-Fixes #1
-Closes #2
--->
-
-# Fixes #
-
-A short description of what this PR does.
-
-### Checklist
-- [ ] I acknowledge that all my contributions will be made under the project's license
-- [ ] I have made a material change to the repo (functionality, testing, spelling, grammar)
-- [ ] I have read the [Contribution Guidelines](CONTRIBUTING.md) and my PR follows them
-- [ ] I have titled the PR appropriately
-- [ ] I have updated my branch with the master branch
-- [ ] I have added tests that prove my fix is effective or that my feature works
-- [ ] I have added necessary documentation about the functionality in the appropriate .md file
-- [ ] I have added inline documentation to the code I modified
-
-If you have questions, please file a [support ticket](https://twilio.com/help/contact), or create a GitHub Issue in this repository.
diff --git a/libs/sendgrid/README.md b/libs/sendgrid/README.md
deleted file mode 100644
index e58f203..0000000
--- a/libs/sendgrid/README.md
+++ /dev/null
@@ -1,233 +0,0 @@
-![SendGrid Logo](https://github.com/sendgrid/sendgrid-python/raw/master/twilio_sendgrid_logo.png)
-
-[![BuildStatus](https://travis-ci.org/sendgrid/sendgrid-php.svg?branch=master)](https://travis-ci.org/sendgrid/sendgrid-php)
-[![Packagist](https://img.shields.io/packagist/v/sendgrid/sendgrid.svg)](https://packagist.org/packages/sendgrid/sendgrid)
-[![Downloads](https://img.shields.io/packagist/dt/sendgrid/sendgrid.svg?maxAge=3600)](https://packagist.org/packages/sendgrid/sendgrid)
-[![Email Notifications Badge](https://dx.sendgrid.com/badge/php)](https://dx.sendgrid.com/newsletter/php)
-[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.md)
-[![Twitter Follow](https://img.shields.io/twitter/follow/sendgrid.svg?style=social&label=Follow)](https://twitter.com/sendgrid)
-[![GitHub contributors](https://img.shields.io/github/contributors/sendgrid/sendgrid-php.svg)](https://github.com/sendgrid/sendgrid-php/graphs/contributors)
-[![Open Source Helpers](https://www.codetriage.com/sendgrid/sendgrid-php/badges/users.svg)](https://www.codetriage.com/sendgrid/sendgrid-php)
-
-**NEW:**
-- Subscribe to email [notifications](https://dx.sendgrid.com/newsletter/php) for releases and breaking changes.
-- Send SMS messages with [Twilio](https://github.com/sendgrid/sendgrid-php/blob/master/USE_CASES.md#sms).
-
-**This library allows you to quickly and easily use the Twilio SendGrid Web API v3 via PHP.**
-
-Version 7.X.X of this library provides full support for all Twilio SendGrid [Web API v3](https://sendgrid.com/docs/API_Reference/Web_API_v3/index.html) endpoints, including the new [v3 /mail/send](https://sendgrid.com/blog/introducing-v3mailsend-sendgrids-new-mail-endpoint).
-
-We want this library to be community driven and Twilio SendGrid led. Your help is needed to realize this goal. To help make sure we are building the right things in the right order, we ask that you create [issues](https://github.com/sendgrid/sendgrid-php/issues) and [pull requests](https://github.com/sendgrid/sendgrid-php/blob/master/CONTRIBUTING.md) or simply upvote or comment on existing issues or pull requests.
-
-Please browse the rest of this README for further details.
-
-We appreciate your continued support, thank you!
-
-# Table of Contents
-
-* [Installation](#installation)
-* [Quick Start](#quick-start)
-* [Use Cases](#use-cases)
-* [Usage](#usage)
-* [Announcements](#announcements)
-* [Roadmap](#roadmap)
-* [How to Contribute](#contribute)
-* [Troubleshooting](#troubleshooting)
-* [About](#about)
-* [License](#license)
-
-<a name="installation"></a>
-# Installation
-
-## Prerequisites
-
-- PHP version 5.6, 7.0, 7.1, 7.2, 7.3, or 7.4
-- The Twilio SendGrid service, starting at the [free level](https://sendgrid.com/free?source=sendgrid-php) to send up to 40,000 emails for the first 30 days, then send 100 emails/day free forever or check out [our pricing](https://sendgrid.com/pricing?source=sendgrid-php).
-- For SMS messages, you will need a free [Twilio account](https://www.twilio.com/try-twilio?source=sendgrid-php).
-
-## Setup Environment Variables
-
-Update the development environment with your [SENDGRID_API_KEY](https://app.sendgrid.com/settings/api_keys), for example:
-
-1. Copy the sample env file to a new file named `.env`
-```bash
-cp .env.sample .env
-```
-2. Edit the `.env` file to include your `SENDGRID_API_KEY`
-3. Source the `.env` file
-```bash
-source ./.env
-```
-
-## Install Package
-
-Add Twilio SendGrid to your `composer.json` file. If you are not using [Composer](http://getcomposer.org), we highly recommend it. It's an excellent way to manage dependencies in your PHP application.
-
-```json
-{
-  "require": {
-    "sendgrid/sendgrid": "~7"
-  }
-}
-```
-
-#### Alternative: Install package from zip
-
-If you are not using Composer, simply download and install the **[latest packaged release of the library as a zip](https://github.com/sendgrid/sendgrid-php/releases/download/7.5.0/sendgrid-php.zip)**.
-
-[**⬇︎ Download Packaged Library ⬇︎**](https://github.com/sendgrid/sendgrid-php/releases/download/7.5.0/sendgrid-php.zip)
-
-Previous versions of the library can be found in the [version index](https://sendgrid-open-source.s3.amazonaws.com/index.html) or downloaded directly from [GitHub](https://github.com/sendgrid/sendgrid-php/releases).
-
-## Dependencies
-
-- The Twilio SendGrid Service, starting at the [free level](https://sendgrid.com/free?source=sendgrid-php)
-- The dependency free [php-http-client](https://github.com/sendgrid/php-http-client)
-
-<a name="quick-start"></a>
-# Quick Start
-
-## Hello Email
-
-The following is the minimum needed code to send an email. You may find more examples in our USE_CASES file:
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$email = new \SendGrid\Mail\Mail();
-$email->setFrom("test@example.com", "Example User");
-$email->setSubject("Sending with Twilio SendGrid is Fun");
-$email->addTo("test@example.com", "Example User");
-$email->addContent("text/plain", "and easy to do anywhere, even with PHP");
-$email->addContent(
-    "text/html", "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '. $e->getMessage() ."\n";
-}
-```
-
-The `SendGrid\Mail` constructor creates a [personalization object](https://sendgrid.com/docs/Classroom/Send/v3_Mail_Send/personalizations.html) for you. [Here](https://github.com/sendgrid/sendgrid-php/blob/master/USE_CASES.md#kitchen-sink) is an example of how to add to it.
-
-## General v3 Web API Usage (With Fluent Interface)
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$apiKey = getenv('SENDGRID_API_KEY');
-$sg = new \SendGrid($apiKey);
-
-try {
-    $response = $sg->client->suppression()->bounces()->get();
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-## General v3 Web API Usage (Without Fluent Interface)
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$apiKey = getenv('SENDGRID_API_KEY');
-$sg = new \SendGrid($apiKey);
-
-try {
-    $response = $sg->client->_("suppression/bounces")->get();
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-<a name="use-cases"></a>
-# Use Cases
-
-[Examples of common API use cases](https://github.com/sendgrid/sendgrid-php/blob/master/USE_CASES.md), such as how to send an email with a transactional template.
-
-<a name="usage"></a>
-# Usage
-
-- [Twilio SendGrid Docs](https://sendgrid.com/docs/API_Reference/index.html)
-- [Generic Library Usage
-    Documentation](https://github.com/sendgrid/sendgrid-php/tree/master/USAGE.md)
-- [Example Code](https://github.com/sendgrid/sendgrid-php/blob/master/USE_CASES.md)
-
-<a name="announcements"></a>
-# Announcements
-
-v7 has been released! Please see the [release notes](https://github.com/sendgrid/sendgrid-php/releases/tag/v7.0.0) for details.
-
-All updates to this library are documented in our [CHANGELOG](https://github.com/sendgrid/sendgrid-php/blob/master/CHANGELOG.md) and [releases](https://github.com/sendgrid/sendgrid-php/releases). You may also subscribe to email [release notifications](https://dx.sendgrid.com/newsletter/php) for releases and breaking changes.
-
-<a name="roadmap"></a>
-# Roadmap
-
-If you are interested in the future direction of this project, please take a look at our open [issues](https://github.com/sendgrid/sendgrid-php/issues) and [pull requests](https://github.com/sendgrid/sendgrid-php/pulls). We would love to hear your feedback.
-
-<a name="contribute"></a>
-# How to Contribute
-
-We encourage contribution to our libraries (you might even score some nifty swag), please see our [CONTRIBUTING](https://github.com/sendgrid/sendgrid-php/blob/master/CONTRIBUTING.md) guide for details.
-
-Quick links:
-
-- [Feature Request](https://github.com/sendgrid/sendgrid-php/blob/master/CONTRIBUTING.md#feature_request)
-- [Bug Reports](https://github.com/sendgrid/sendgrid-php/blob/master/CONTRIBUTING.md#submit_a_bug_report)
-- [Sign the CLA to Create a Pull Request](https://github.com/sendgrid/sendgrid-php/blob/master/CONTRIBUTING.md#cla)
-- [Improvements to the Codebase](https://github.com/sendgrid/sendgrid-php/blob/master/CONTRIBUTING.md#improvements_to_the_codebase)
-- [Review Pull Requests](https://github.com/sendgrid/sendgrid-php/blob/master/CONTRIBUTING.md#code-reviews)
-
-<a name="troubleshooting"></a>
-# Troubleshooting
-
-Please see our [troubleshooting guide](https://github.com/sendgrid/sendgrid-php/blob/master/TROUBLESHOOTING.md) for common library issues.
-
-<a name="about"></a>
-# About
-
-sendgrid-php is maintained and funded by Twilio SendGrid, Inc. The names and logos for sendgrid-php are trademarks of Twilio SendGrid, Inc.
-
-If you need help installing or using the library, please check the [Twilio SendGrid Support Help Center](https://support.sendgrid.com).
-
-If you've instead found a bug in the library or would like new features added, go ahead and open issues or pull requests against this repo!
-
-# License
-[The MIT License (MIT)](LICENSE.md)
diff --git a/libs/sendgrid/TROUBLESHOOTING.md b/libs/sendgrid/TROUBLESHOOTING.md
deleted file mode 100644
index e2eed02..0000000
--- a/libs/sendgrid/TROUBLESHOOTING.md
+++ /dev/null
@@ -1,132 +0,0 @@
-If you have an issue logging into your Twilio SendGrid account, please read this [document](https://sendgrid.com/docs/ui/account-and-settings/troubleshooting-login/). For any questions regarding login issues, please contact our [support team](https://support.sendgrid.com).
-
-If you have a non-library Twilio SendGrid issue, please contact our [support team](https://support.sendgrid.com).
-
-If you can't find a solution below, please open an [issue](https://github.com/sendgrid/sendgrid-php/issues).
-
-## Table of Contents
-
-- [Table of Contents](#table-of-contents)
-- [Migrating from v2 to v3](#migrating-from-v2-to-v3)
-- [Continue Using v2](#continue-using-v2)
-- [Testing v3 /mail/send Calls Directly](#testing-v3-mailsend-calls-directly)
-- [Error Messages](#error-messages)
-- [Versions](#versions)
-- [Environment Variables and Your Twilio SendGrid API Key](#environment-variables-and-your-twilio-sendgrid-api-key)
-- [Using the Package Manager](#using-the-package-manager)
-- [Fixing Error 415](#fixing-error-415)
-- [Viewing the Request Body](#viewing-the-request-body)
-- [Google App Engine installation](#google-app-engine-installation)
-
-<a name="migrating"></a>
-## Migrating from v2 to v3
-
-In this context, we are referring to the version of the Twilio SendGrid API.
-
-Please review [our guide](https://sendgrid.com/docs/Classroom/Send/v3_Mail_Send/how_to_migrate_from_v2_to_v3_mail_send.html) on how to migrate from v2 to v3.
-
-<a name="v2"></a>
-## Continue Using v2
-
-In this context, we are referring to the version of the Twilio SendGrid API.
-
-[Here](https://github.com/sendgrid/sendgrid-php/releases/tag/v4.0.4) is the last working version with v2 support.
-
-Using composer:
-
-```json
-{
-  "require": {
-    "sendgrid/sendgrid": "~4.0.4"
-  }
-}
-```
-
-Download packaged zip [here](https://sendgrid-open-source.s3.amazonaws.com/sendgrid-php/versions/sendgrid-php-75970eb.zip).
-
-<a name="testing"></a>
-## Testing v3 /mail/send Calls Directly
-
-[Here](https://sendgrid.com/docs/for-developers/sending-email/curl-examples/) are some cURL examples for common use cases.
-
-<a name="error"></a>
-## Error Messages
-
-Failed requests will always return an error response, including a response code, a message explaining the reason for the error, and a link to any relevant documentation that may help you troubleshoot the problem.
-
-To read the error message returned by Twilio SendGrid's API:
-
-```php
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n"; 
-    print_r($response->headers());
-    print $response->body() . "\n"; // Twilio SendGrid specific errors are found here
-} catch (Exception $e) {
-    echo 'Caught exception: ',  $e->getMessage(), "\n";
-}
-```
-
-You may find complete documentation [here](https://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html).
-
-<a name="versions"></a>
-## Versions
-
-We follow the MAJOR.MINOR.PATCH versioning scheme as described by [SemVer.org](http://semver.org). Therefore, we recommend that you always pin (or vendor) the particular version you are working with to your code and never auto-update to the latest version. Especially when there is a MAJOR point release, since that is guaranteed to be a breaking change. Changes are documented in the [CHANGELOG](https://github.com/sendgrid/sendgrid-php/blob/master/CHANGELOG.md) and [releases](https://github.com/sendgrid/sendgrid-php/releases) section.
-
-<a name="environment"></a>
-## Environment Variables and Your Twilio SendGrid API Key
-
-All of our examples assume you are using [environment variables](https://github.com/sendgrid/sendgrid-php#setup-environment-variables) to hold your Twilio SendGrid API key.
-
-If you choose to add your Twilio SendGrid API key directly (not recommended):
-
-`$apiKey = getenv('SENDGRID_API_KEY');`
-
-becomes
-
-`$apiKey = 'SENDGRID_API_KEY';`
-
-In the first case SENDGRID_API_KEY is in reference to the name of the environment variable, while the second case references the actual Twilio SendGrid API Key.
-
-<a name="package-manager"></a>
-## Using the Package Manager
-
-We upload this library to [Packagist](https://packagist.org/packages/sendgrid/sendgrid) whenever we make a release. This allows you to use [composer](https://getcomposer.org) for easy installation.
-
-In most cases we recommend you download the latest version of the library, but if you need a different version, please use:
-
-```json
-{
-  "require": {
-    "sendgrid/sendgrid": "~X.X.X"
-  }
-}
-```
-
-<a name="error-415"></a>
-## Fixing Error 415
-
-If you're getting the following error while using this library:
-
-`Content-Type should be application/json.`
-
-It is most likely due to a linebreak in your API key. Passing your key through `trim` should fix this:
-
-`$apiKey = trim($apiKey)`
-
-<a name="request-body"></a>
-## Viewing the Request Body
-
-When debugging or testing, it may be useful to examine the raw request body to compare against the [documented format](https://sendgrid.com/docs/API_Reference/api_v3.html).
-
-You can do this right before you call `$response = $sg->send($email);` like so:
-
-```php
-echo json_encode($email, JSON_PRETTY_PRINT);
-```
-
-<a name="GAE-instructions"></a>
-## Google App Engine installation
-
-Please refer to [`USE_CASES.md`](https://github.com/sendgrid/sendgrid-php/blob/master/USE_CASES.md#GAE-instructions) for additional instructions.
diff --git a/libs/sendgrid/USAGE.md b/libs/sendgrid/USAGE.md
deleted file mode 100644
index 7a7c703..0000000
--- a/libs/sendgrid/USAGE.md
+++ /dev/null
@@ -1,5042 +0,0 @@
-This documentation is based on our [OAI specification](https://github.com/sendgrid/sendgrid-oai).
-
-# INITIALIZATION
-
-```php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$apiKey = getenv('SENDGRID_API_KEY');
-$sg = new \SendGrid($apiKey);
-```
-
-# Table of Contents
-
-* [ACCESS SETTINGS](#access-settings)
-* [ALERTS](#alerts)
-* [API KEYS](#api-keys)
-* [ASM](#asm)
-* [BROWSERS](#browsers)
-* [CAMPAIGNS](#campaigns)
-* [CATEGORIES](#categories)
-* [CLIENTS](#clients)
-* [CONTACTDB](#contactdb)
-* [DEVICES](#devices)
-* [GEO](#geo)
-* [IPS](#ips)
-* [MAIL](#mail)
-* [MAIL SETTINGS](#mail-settings)
-* [MAILBOX PROVIDERS](#mailbox-providers)
-* [PARTNER SETTINGS](#partner-settings)
-* [SCOPES](#scopes)
-* [SENDERS](#senders)
-* [SENDER AUTHENTICATION](#sender-authentication)
-* [STATS](#stats)
-* [SUBUSERS](#subusers)
-* [SUPPRESSION](#suppression)
-* [TEMPLATES](#templates)
-* [TRACKING SETTINGS](#tracking-settings)
-* [USER](#user)
-
-
-<a name="access-settings"></a>
-# ACCESS SETTINGS
-
-## Retrieve all recent access attempts
-
-**This endpoint allows you to retrieve a list of all of the IP addresses that recently attempted to access your account either through the User Interface or the API.**
-
-IP Access Management allows you to control which IP addresses can be used to access your account, either through the User Interface or the API. There is no limit to the number of IP addresses that you can add to your whitelist. It is possible to remove your own IP address from the whitelist, thus preventing yourself from accessing your account.
-
-For more information, please see our [User Guide](http://sendgrid.com/docs/User_Guide/Settings/ip_access_management.html).
-
-### GET /access_settings/activity
-
-
-```php
-$query_params = json_decode('{"limit": 1}');
-$response = $sg->client->access_settings()->activity()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add one or more IPs to the whitelist
-
-**This endpoint allows you to add one or more IP addresses to your IP whitelist.**
-
-When adding an IP to your whitelist, include the IP address in an array. You can whitelist one IP at a time, or you can whitelist multiple IPs at once.
-
-IP Access Management allows you to control which IP addresses can be used to access your account, either through the User Interface or the API. There is no limit to the number of IP addresses that you can add to your whitelist. It is possible to remove your own IP address from the whitelist, thus preventing yourself from accessing your account.
-
-For more information, please see our [User Guide](http://sendgrid.com/docs/User_Guide/Settings/ip_access_management.html).
-
-### POST /access_settings/whitelist
-
-
-```php
-$request_body = json_decode('{
-  "ips": [
-    {
-      "ip": "192.168.1.1"
-    },
-    {
-      "ip": "192.*.*.*"
-    },
-    {
-      "ip": "192.168.1.3/32"
-    }
-  ]
-}');
-$response = $sg->client->access_settings()->whitelist()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a list of currently whitelisted IPs
-
-**This endpoint allows you to retrieve a list of IP addresses that are currently whitelisted.**
-
-IP Access Management allows you to control which IP addresses can be used to access your account, either through the User Interface or the API. There is no limit to the number of IP addresses that you can add to your whitelist. It is possible to remove your own IP address from the whitelist, thus preventing yourself from accessing your account.
-
-For more information, please see our [User Guide](http://sendgrid.com/docs/User_Guide/Settings/ip_access_management.html).
-
-### GET /access_settings/whitelist
-
-
-```php
-$response = $sg->client->access_settings()->whitelist()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Remove one or more IPs from the whitelist
-
-**This endpoint allows you to remove one or more IPs from your IP whitelist.**
-
-You can remove one IP at a time, or you can remove multiple IP addresses.
-
-IP Access Management allows you to control which IP addresses can be used to access your account, either through the User Interface or the API. There is no limit to the number of IP addresses that you can add to your whitelist. It is possible to remove your own IP address from the whitelist, thus preventing yourself from accessing your account.
-
-For more information, please see our [User Guide](http://sendgrid.com/docs/User_Guide/Settings/ip_access_management.html).
-
-### DELETE /access_settings/whitelist
-
-
-```php
-$request_body = json_decode('{
-  "ids": [
-    1,
-    2,
-    3
-  ]
-}');
-$response = $sg->client->access_settings()->whitelist()->delete($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a specific whitelisted IP
-
-**This endpoint allows you to retrieve a specific IP address that has been whitelisted.**
-
-You must include the ID for the specific IP address you want to retrieve in your call.
-
-IP Access Management allows you to control which IP addresses can be used to access your account, either through the User Interface or the API. There is no limit to the number of IP addresses that you can add to your whitelist. It is possible to remove your own IP address from the whitelist, thus preventing yourself from accessing your account.
-
-For more information, please see our [User Guide](http://sendgrid.com/docs/User_Guide/Settings/ip_access_management.html).
-
-### GET /access_settings/whitelist/{rule_id}
-
-
-```php
-$rule_id = "test_url_param";
-$response = $sg->client->access_settings()->whitelist()->_($rule_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Remove a specific IP from the whitelist
-
-**This endpoint allows you to remove a specific IP address from your IP whitelist.**
-
-When removing a specific IP address from your whitelist, you must include the ID in your call.
-
-IP Access Management allows you to control which IP addresses can be used to access your account, either through the User Interface or the API. There is no limit to the number of IP addresses that you can add to your whitelist. It is possible to remove your own IP address from the whitelist, thus preventing yourself from accessing your account.
-
-For more information, please see our [User Guide](http://sendgrid.com/docs/User_Guide/Settings/ip_access_management.html).
-
-### DELETE /access_settings/whitelist/{rule_id}
-
-
-```php
-$rule_id = "test_url_param";
-$response = $sg->client->access_settings()->whitelist()->_($rule_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="alerts"></a>
-# ALERTS
-
-## Create a new Alert
-
-**This endpoint allows you to create a new alert.**
-
-Alerts allow you to specify an email address to receive notifications regarding your email usage or statistics.
-* Usage alerts allow you to set the threshold at which an alert will be sent.
-* Stats notifications allow you to set how frequently you would like to receive email statistics reports. For example, "daily", "weekly", or "monthly".
-
-For more information about alerts, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/alerts.html).
-
-### POST /alerts
-
-
-```php
-$request_body = json_decode('{
-  "email_to": "example@example.com",
-  "frequency": "daily",
-  "type": "stats_notification"
-}');
-$response = $sg->client->alerts()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all alerts
-
-**This endpoint allows you to retrieve all of your alerts.**
-
-Alerts allow you to specify an email address to receive notifications regarding your email usage or statistics.
-* Usage alerts allow you to set the threshold at which an alert will be sent.
-* Stats notifications allow you to set how frequently you would like to receive email statistics reports. For example, "daily", "weekly", or "monthly".
-
-For more information about alerts, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/alerts.html).
-
-### GET /alerts
-
-
-```php
-$response = $sg->client->alerts()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update an alert
-
-**This endpoint allows you to update an alert.**
-
-Alerts allow you to specify an email address to receive notifications regarding your email usage or statistics.
-* Usage alerts allow you to set the threshold at which an alert will be sent.
-* Stats notifications allow you to set how frequently you would like to receive email statistics reports. For example, "daily", "weekly", or "monthly".
-
-For more information about alerts, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/alerts.html).
-
-### PATCH /alerts/{alert_id}
-
-
-```php
-$request_body = json_decode('{
-  "email_to": "example@example.com"
-}');
-$alert_id = "test_url_param";
-$response = $sg->client->alerts()->_($alert_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a specific alert
-
-**This endpoint allows you to retrieve a specific alert.**
-
-Alerts allow you to specify an email address to receive notifications regarding your email usage or statistics.
-* Usage alerts allow you to set the threshold at which an alert will be sent.
-* Stats notifications allow you to set how frequently you would like to receive email statistics reports. For example, "daily", "weekly", or "monthly".
-
-For more information about alerts, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/alerts.html).
-
-### GET /alerts/{alert_id}
-
-
-```php
-$alert_id = "test_url_param";
-$response = $sg->client->alerts()->_($alert_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete an alert
-
-**This endpoint allows you to delete an alert.**
-
-Alerts allow you to specify an email address to receive notifications regarding your email usage or statistics.
-* Usage alerts allow you to set the threshold at which an alert will be sent.
-* Stats notifications allow you to set how frequently you would like to receive email statistics reports. For example, "daily", "weekly", or "monthly".
-
-For more information about alerts, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/alerts.html).
-
-### DELETE /alerts/{alert_id}
-
-
-```php
-$alert_id = "test_url_param";
-$response = $sg->client->alerts()->_($alert_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="api-keys"></a>
-# API KEYS
-
-## Create API keys
-
-**This endpoint allows you to create a new random API Key for the user.**
-
-A JSON request body containing a "name" property is required. If a number of maximum keys is reached, HTTP 403 will be returned.
-
-There is a limit of 100 API Keys on your account.
-
-The API Keys feature allows customers to be able to generate an API Key credential which can be used for authentication with the Twilio SendGrid v3 Web API or the [Mail API Endpoint](https://sendgrid.com/docs/API_Reference/Web_API/mail.html).
-
-See the [API Key Permissions List](https://sendgrid.com/docs/API_Reference/Web_API_v3/API_Keys/api_key_permissions_list.html) for a list of all available scopes.
-
-### POST /api_keys
-
-
-```php
-$request_body = json_decode('{
-  "name": "My API Key",
-  "sample": "data",
-  "scopes": [
-    "mail.send",
-    "alerts.create",
-    "alerts.read"
-  ]
-}');
-$response = $sg->client->api_keys()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all API Keys belonging to the authenticated user
-
-**This endpoint allows you to retrieve all API Keys that belong to the authenticated user.**
-
-The API Keys feature allows customers to be able to generate an API Key credential which can be used for authentication with the Twilio SendGrid v3 Web API or the [Mail API Endpoint](https://sendgrid.com/docs/API_Reference/Web_API/mail.html).
-
-### GET /api_keys
-
-
-```php
-$query_params = json_decode('{"limit": 1}');
-$response = $sg->client->api_keys()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update the name & scopes of an API Key
-
-**This endpoint allows you to update the name and scopes of a given API key.**
-
-A JSON request body with a "name" property is required.
-Most provide the list of all the scopes an API key should have.
-
-The API Keys feature allows customers to be able to generate an API Key credential which can be used for authentication with the Twilio SendGrid v3 Web API or the [Mail API Endpoint](https://sendgrid.com/docs/API_Reference/Web_API/mail.html).
-
-
-### PUT /api_keys/{api_key_id}
-
-
-```php
-$request_body = json_decode('{
-  "name": "A New Hope",
-  "scopes": [
-    "user.profile.read",
-    "user.profile.update"
-  ]
-}');
-$api_key_id = "test_url_param";
-$response = $sg->client->api_keys()->_($api_key_id)->put($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update API keys
-
-**This endpoint allows you to update the name of an existing API Key.**
-
-A JSON request body with a "name" property is required.
-
-The API Keys feature allows customers to be able to generate an API Key credential which can be used for authentication with the Twilio SendGrid v3 Web API or the [Mail API Endpoint](https://sendgrid.com/docs/API_Reference/Web_API/mail.html).
-
-## URI Parameters
-
-| URI Parameter   | Type  | Required?  | Description  |
-|---|---|---|---|
-|api_key_id |string | required | The ID of the API Key you are updating.|
-
-### PATCH /api_keys/{api_key_id}
-
-
-```php
-$request_body = json_decode('{
-  "name": "A New Hope"
-}');
-$api_key_id = "test_url_param";
-$response = $sg->client->api_keys()->_($api_key_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve an existing API Key
-
-**This endpoint allows you to retrieve a single API key.**
-
-If the API Key ID does not exist an HTTP 404 will be returned.
-
-### GET /api_keys/{api_key_id}
-
-
-```php
-$api_key_id = "test_url_param";
-$response = $sg->client->api_keys()->_($api_key_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete API keys
-
-**This endpoint allows you to revoke an existing API Key**
-
-Authentications using this API Key will fail after this request is made, with some small propagation delay. If the API Key ID does not exist an HTTP 404 will be returned.
-
-The API Keys feature allows customers to be able to generate an API Key credential which can be used for authentication with the Twilio SendGrid v3 Web API or the [Mail API Endpoint](https://sendgrid.com/docs/API_Reference/Web_API/mail.html).
-
-## URI Parameters
-
-| URI Parameter   | Type  | Required?  | Description  |
-|---|---|---|---|
-|api_key_id |string | required | The ID of the API Key you are deleting.|
-
-### DELETE /api_keys/{api_key_id}
-
-
-```php
-$api_key_id = "test_url_param";
-$response = $sg->client->api_keys()->_($api_key_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="asm"></a>
-# ASM
-
-## Create a new suppression group
-
-**This endpoint allows you to create a new suppression group.**
-
-Suppression groups, or unsubscribe groups, are specific types or categories of email that you would like your recipients to be able to unsubscribe from. For example: Daily Newsletters, Invoices, System Alerts.
-
-The **name** and **description** of the unsubscribe group will be visible by recipients when they are managing their subscriptions.
-
-Each user can create up to 25 different suppression groups.
-
-### POST /asm/groups
-
-
-```php
-$request_body = json_decode('{
-  "description": "Suggestions for products our users might like.",
-  "is_default": true,
-  "name": "Product Suggestions"
-}');
-$response = $sg->client->asm()->groups()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve information about multiple suppression groups
-
-**This endpoint allows you to retrieve information about multiple suppression groups.**
-
-This endpoint will return information for each group ID that you include in your request. To add a group ID to your request, simply append `&id=` followed by the group ID.
-
-Suppressions are a list of email addresses that will not receive content sent under a given [group](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html).
-
-Suppression groups, or [unsubscribe groups](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html), allow you to label a category of content that you regularly send. This gives your recipients the ability to opt out of a specific set of your email. For example, you might define a group for your transactional email, and one for your marketing email so that your users can continue receiving your transactional email without having to receive your marketing content.
-
-### GET /asm/groups
-
-
-```php
-$query_params = json_decode('{"id": 1}');
-$response = $sg->client->asm()->groups()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a suppression group.
-
-**This endpoint allows you to update or change a suppression group.**
-
-Suppression groups, or unsubscribe groups, are specific types or categories of email that you would like your recipients to be able to unsubscribe from. For example: Daily Newsletters, Invoices, System Alerts.
-
-The **name** and **description** of the unsubscribe group will be visible by recipients when they are managing their subscriptions.
-
-Each user can create up to 25 different suppression groups.
-
-### PATCH /asm/groups/{group_id}
-
-
-```php
-$request_body = json_decode('{
-  "description": "Suggestions for items our users might like.",
-  "id": 103,
-  "name": "Item Suggestions"
-}');
-$group_id = "test_url_param";
-$response = $sg->client->asm()->groups()->_($group_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Get information on a single suppression group.
-
-**This endpoint allows you to retrieve a single suppression group.**
-
-Suppression groups, or unsubscribe groups, are specific types or categories of email that you would like your recipients to be able to unsubscribe from. For example: Daily Newsletters, Invoices, System Alerts.
-
-The **name** and **description** of the unsubscribe group will be visible by recipients when they are managing their subscriptions.
-
-Each user can create up to 25 different suppression groups.
-
-### GET /asm/groups/{group_id}
-
-
-```php
-$group_id = "test_url_param";
-$response = $sg->client->asm()->groups()->_($group_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a suppression group.
-
-**This endpoint allows you to delete a suppression group.**
-
-You can only delete groups that have not been attached to sent mail in the last 60 days. If a recipient uses the "one-click unsubscribe" option on an email associated with a deleted group, that recipient will be added to the global suppression list.
-
-Suppression groups, or unsubscribe groups, are specific types or categories of email that you would like your recipients to be able to unsubscribe from. For example: Daily Newsletters, Invoices, System Alerts.
-
-The **name** and **description** of the unsubscribe group will be visible by recipients when they are managing their subscriptions.
-
-Each user can create up to 25 different suppression groups.
-
-### DELETE /asm/groups/{group_id}
-
-
-```php
-$group_id = "test_url_param";
-$response = $sg->client->asm()->groups()->_($group_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add suppressions to a suppression group
-
-**This endpoint allows you to add email addresses to an unsubscribe group.**
-
-If you attempt to add suppressions to a group that has been deleted or does not exist, the suppressions will be added to the global suppressions list.
-
-Suppressions are recipient email addresses that are added to [unsubscribe groups](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html). Once a recipient's address is on the suppressions list for an unsubscribe group, they will not receive any emails that are tagged with that unsubscribe group.
-
-### POST /asm/groups/{group_id}/suppressions
-
-
-```php
-$request_body = json_decode('{
-  "recipient_emails": [
-    "test1@example.com",
-    "test2@example.com"
-  ]
-}');
-$group_id = "test_url_param";
-$response = $sg->client->asm()->groups()->_($group_id)->suppressions()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all suppressions for a suppression group
-
-**This endpoint allows you to retrieve all suppressed email addresses belonging to the given group.**
-
-Suppressions are recipient email addresses that are added to [unsubscribe groups](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html). Once a recipient's address is on the suppressions list for an unsubscribe group, they will not receive any emails that are tagged with that unsubscribe group.
-
-### GET /asm/groups/{group_id}/suppressions
-
-
-```php
-$group_id = "test_url_param";
-$response = $sg->client->asm()->groups()->_($group_id)->suppressions()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Search for suppressions within a group
-
-**This endpoint allows you to search a suppression group for multiple suppressions.**
-
-When given a list of email addresses and a group ID, this endpoint will return only the email addresses that have been unsubscribed from the given group.
-
-Suppressions are a list of email addresses that will not receive content sent under a given [group](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html).
-
-### POST /asm/groups/{group_id}/suppressions/search
-
-
-```php
-$request_body = json_decode('{
-  "recipient_emails": [
-    "exists1@example.com",
-    "exists2@example.com",
-    "doesnotexists@example.com"
-  ]
-}');
-$group_id = "test_url_param";
-$response = $sg->client->asm()->groups()->_($group_id)->suppressions()->search()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a suppression from a suppression group
-
-**This endpoint allows you to remove a suppressed email address from the given suppression group.**
-
-Suppressions are recipient email addresses that are added to [unsubscribe groups](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html). Once a recipient's address is on the suppressions list for an unsubscribe group, they will not receive any emails that are tagged with that unsubscribe group.
-
-### DELETE /asm/groups/{group_id}/suppressions/{email}
-
-
-```php
-$group_id = "test_url_param";
-$email = "test_url_param";
-$response = $sg->client->asm()->groups()->_($group_id)->suppressions()->_($email)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all suppressions
-
-**This endpoint allows you to retrieve a list of all suppressions.**
-
-Suppressions are a list of email addresses that will not receive content sent under a given [group](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html).
-
-### GET /asm/suppressions
-
-
-```php
-$response = $sg->client->asm()->suppressions()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add recipient addresses to the global suppression group.
-
-**This endpoint allows you to add one or more email addresses to the global suppressions group.**
-
-A global suppression (or global unsubscribe) is an email address of a recipient who does not want to receive any of your messages. A globally suppressed recipient will be removed from any email you send. For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/global_unsubscribes.html).
-
-### POST /asm/suppressions/global
-
-
-```php
-$request_body = json_decode('{
-  "recipient_emails": [
-    "test1@example.com",
-    "test2@example.com"
-  ]
-}');
-$response = $sg->client->asm()->suppressions()->global()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a Global Suppression
-
-**This endpoint allows you to retrieve a global suppression. You can also use this endpoint to confirm if an email address is already globally suppressed.**
-
-If the email address you include in the URL path parameter `{email}` is already globally suppressed, the response will include that email address. If the address you enter for `{email}` is not globally suppressed, an empty JSON object `{}` will be returned.
-
-A global suppression (or global unsubscribe) is an email address of a recipient who does not want to receive any of your messages. A globally suppressed recipient will be removed from any email you send. For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/global_unsubscribes.html).
-
-### GET /asm/suppressions/global/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->asm()->suppressions()->global()->_($email)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a Global Suppression
-
-**This endpoint allows you to remove an email address from the global suppressions group.**
-
-A global suppression (or global unsubscribe) is an email address of a recipient who does not want to receive any of your messages. A globally suppressed recipient will be removed from any email you send. For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/global_unsubscribes.html).
-
-### DELETE /asm/suppressions/global/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->asm()->suppressions()->global()->_($email)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all suppression groups for an email address
-
-**This endpoint returns the list of all groups that the given email address has been unsubscribed from.**
-
-Suppressions are a list of email addresses that will not receive content sent under a given [group](https://sendgrid.com/docs/API_Reference/Web_API_v3/Suppression_Management/groups.html).
-
-### GET /asm/suppressions/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->asm()->suppressions()->_($email)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="browsers"></a>
-# BROWSERS
-
-## Retrieve email statistics by a browser.
-
-**This endpoint allows you to retrieve your email statistics segmented by browser type.**
-
-**We only store up to 7 days of email activity in our database.** By default, 500 items will be returned per request via the Advanced Stats API endpoints.
-
-Advanced Stats provide a more in-depth view of your email statistics and the actions taken by your recipients. You can segment these statistics by geographic location, device type, client type, browser, and mailbox provider. For more information about statistics, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/index.html).
-
-### GET /browsers/stats
-
-
-```php
-$query_params = json_decode('{"end_date": "2016-04-01", "aggregated_by": "day", "browsers": "test_string", "limit": "test_string", "offset": "test_string", "start_date": "2016-01-01"}');
-$response = $sg->client->browsers()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="campaigns"></a>
-# CAMPAIGNS
-
-## Create a Campaign
-
-**This endpoint allows you to create a campaign.**
-
-Our Marketing Campaigns API lets you create, manage, send, and schedule campaigns.
-
-Note: In order to send or schedule the campaign, you will be required to provide a subject, sender ID, content (we suggest both HTML and plain text), and at least one list or segment ID. This information is not required when you create a campaign.
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### POST /campaigns
-
-
-```php
-$request_body = json_decode('{
-  "categories": [
-    "spring line"
-  ],
-  "custom_unsubscribe_url": "",
-  "html_content": "<html><head><title></title></head><body><p>Check out our spring line!</p></body></html>",
-  "ip_pool": "marketing",
-  "list_ids": [
-    110,
-    124
-  ],
-  "plain_content": "Check out our spring line!",
-  "segment_ids": [
-    110
-  ],
-  "sender_id": 124451,
-  "subject": "New Products for Spring!",
-  "suppression_group_id": 42,
-  "title": "March Newsletter"
-}');
-$response = $sg->client->campaigns()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all Campaigns
-
-**This endpoint allows you to retrieve a list of all of your campaigns.**
-
-Returns campaigns in reverse order they were created (newest first).
-
-Returns an empty array if no campaigns exist.
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### GET /campaigns
-
-
-```php
-$query_params = json_decode('{"limit": 1, "offset": 1}');
-$response = $sg->client->campaigns()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a Campaign
-
-Update a campaign. This is especially useful if you only set up the campaign using POST /campaigns, but didn't set many of the parameters.
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### PATCH /campaigns/{campaign_id}
-
-
-```php
-$request_body = json_decode('{
-  "categories": [
-    "summer line"
-  ],
-  "html_content": "<html><head><title></title></head><body><p>Check out our summer line!</p></body></html>",
-  "plain_content": "Check out our summer line!",
-  "subject": "New Products for Summer!",
-  "title": "May Newsletter"
-}');
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a single campaign
-
-**This endpoint allows you to retrieve a specific campaign.**
-
-Our Marketing Campaigns API lets you create, manage, send, and schedule campaigns.
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### GET /campaigns/{campaign_id}
-
-
-```php
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a Campaign
-
-**This endpoint allows you to delete a specific campaign.**
-
-Our Marketing Campaigns API lets you create, manage, send, and schedule campaigns.
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### DELETE /campaigns/{campaign_id}
-
-
-```php
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a Scheduled Campaign
-
-**This endpoint allows to you change the scheduled time and date for a campaign to be sent.**
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### PATCH /campaigns/{campaign_id}/schedules
-
-
-```php
-$request_body = json_decode('{
-  "send_at": 1489451436
-}');
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->schedules()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Schedule a Campaign
-
-**This endpoint allows you to schedule a specific date and time for your campaign to be sent.**
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### POST /campaigns/{campaign_id}/schedules
-
-
-```php
-$request_body = json_decode('{
-  "send_at": 1489771528
-}');
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->schedules()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## View Scheduled Time of a Campaign
-
-**This endpoint allows you to retrieve the date and time that the given campaign has been scheduled to be sent.**
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### GET /campaigns/{campaign_id}/schedules
-
-
-```php
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->schedules()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Unschedule a Scheduled Campaign
-
-**This endpoint allows you to unschedule a campaign that has already been scheduled to be sent.**
-
-A successful unschedule will return a 204.
-If the specified campaign is in the process of being sent, the only option is to cancel (a different method).
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### DELETE /campaigns/{campaign_id}/schedules
-
-
-```php
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->schedules()->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Send a Campaign
-
-**This endpoint allows you to immediately send a campaign at the time you make the API call.**
-
-Normally a POST would have a request body, but since this endpoint is telling us to send a resource that is already created, a request body is not needed.
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### POST /campaigns/{campaign_id}/schedules/now
-
-
-```php
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->schedules()->now()->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Send a Test Campaign
-
-**This endpoint allows you to send a test campaign.**
-
-To send to multiple addresses, use an array for the JSON "to" value ["one@address", "two@address"]
-
-For more information:
-
-* [User Guide > Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html)
-
-### POST /campaigns/{campaign_id}/schedules/test
-
-
-```php
-$request_body = json_decode('{
-  "to": "your.email@example.com"
-}');
-$campaign_id = "test_url_param";
-$response = $sg->client->campaigns()->_($campaign_id)->schedules()->test()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="categories"></a>
-# CATEGORIES
-
-## Retrieve all categories
-
-**This endpoint allows you to retrieve a list of all of your categories.**
-
-Categories can help organize your email analytics by enabling you to tag emails by type or broad topic. You can define your own custom categories. For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/categories.html).
-
-### GET /categories
-
-
-```php
-$query_params = json_decode('{"category": "test_string", "limit": 1, "offset": 1}');
-$response = $sg->client->categories()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve Email Statistics for Categories
-
-**This endpoint allows you to retrieve all of your email statistics for each of your categories.**
-
-If you do not define any query parameters, this endpoint will return a sum for each category in groups of 10.
-
-Categories allow you to group your emails together according to broad topics that you define. For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/categories.html).
-
-### GET /categories/stats
-
-
-```php
-$query_params = json_decode('{"end_date": "2016-04-01", "aggregated_by": "day", "limit": 1, "offset": 1, "start_date": "2016-01-01", "categories": "test_string"}');
-$response = $sg->client->categories()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve sums of email stats for each category [Needs: Stats object defined, has category ID?]
-
-**This endpoint allows you to retrieve the total sum of each email statistic for every category over the given date range.**
-
-If you do not define any query parameters, this endpoint will return a sum for each category in groups of 10.
-
-Categories allow you to group your emails together according to broad topics that you define. For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/categories.html).
-
-### GET /categories/stats/sums
-
-
-```php
-$query_params = json_decode('{"end_date": "2016-04-01", "aggregated_by": "day", "limit": 1, "sort_by_metric": "test_string", "offset": 1, "start_date": "2016-01-01", "sort_by_direction": "asc"}');
-$response = $sg->client->categories()->stats()->sums()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="clients"></a>
-# CLIENTS
-
-## Retrieve email statistics by client type.
-
-**This endpoint allows you to retrieve your email statistics segmented by client type.**
-
-**We only store up to 7 days of email activity in our database.** By default, 500 items will be returned per request via the Advanced Stats API endpoints.
-
-Advanced Stats provide a more in-depth view of your email statistics and the actions taken by your recipients. You can segment these statistics by geographic location, device type, client type, browser, and mailbox provider. For more information about statistics, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/index.html).
-
-### GET /clients/stats
-
-
-```php
-$query_params = json_decode('{"aggregated_by": "day", "start_date": "2016-01-01", "end_date": "2016-04-01"}');
-$response = $sg->client->clients()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve stats by a specific client type.
-
-**This endpoint allows you to retrieve your email statistics segmented by a specific client type.**
-
-**We only store up to 7 days of email activity in our database.** By default, 500 items will be returned per request via the Advanced Stats API endpoints.
-
-## Available Client Types
-- phone
-- tablet
-- webmail
-- desktop
-
-Advanced Stats provide a more in-depth view of your email statistics and the actions taken by your recipients. You can segment these statistics by geographic location, device type, client type, browser, and mailbox provider. For more information about statistics, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/index.html).
-
-### GET /clients/{client_type}/stats
-
-
-```php
-$query_params = json_decode('{"aggregated_by": "day", "start_date": "2016-01-01", "end_date": "2016-04-01"}');
-$client_type = "test_url_param";
-$response = $sg->client->clients()->_($client_type)->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="contactdb"></a>
-# CONTACTDB
-
-## Create a Custom Field
-
-**This endpoint allows you to create a custom field.**
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### POST /contactdb/custom_fields
-
-
-```php
-$request_body = json_decode('{
-  "name": "pet",
-  "type": "text"
-}');
-$response = $sg->client->contactdb()->custom_fields()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all custom fields
-
-**This endpoint allows you to retrieve all custom fields.**
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### GET /contactdb/custom_fields
-
-
-```php
-$response = $sg->client->contactdb()->custom_fields()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a Custom Field
-
-**This endpoint allows you to retrieve a custom field by ID.**
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### GET /contactdb/custom_fields/{custom_field_id}
-
-
-```php
-$custom_field_id = "test_url_param";
-$response = $sg->client->contactdb()->custom_fields()->_($custom_field_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a Custom Field
-
-**This endpoint allows you to delete a custom field by ID.**
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### DELETE /contactdb/custom_fields/{custom_field_id}
-
-
-```php
-$custom_field_id = "test_url_param";
-$response = $sg->client->contactdb()->custom_fields()->_($custom_field_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create a List
-
-**This endpoint allows you to create a list for your recipients.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### POST /contactdb/lists
-
-
-```php
-$request_body = json_decode('{
-  "name": "your list name"
-}');
-$response = $sg->client->contactdb()->lists()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all lists
-
-**This endpoint allows you to retrieve all of your recipient lists. If you don't have any lists, an empty array will be returned.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### GET /contactdb/lists
-
-
-```php
-$response = $sg->client->contactdb()->lists()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete Multiple lists
-
-**This endpoint allows you to delete multiple recipient lists.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### DELETE /contactdb/lists
-
-
-```php
-$request_body = json_decode('[
-  1,
-  2,
-  3,
-  4
-]');
-$response = $sg->client->contactdb()->lists()->delete($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a List
-
-**This endpoint allows you to update the name of one of your recipient lists.**
-
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### PATCH /contactdb/lists/{list_id}
-
-
-```php
-$request_body = json_decode('{
-  "name": "newlistname"
-}');
-$query_params = json_decode('{"list_id": 1}');
-$list_id = "test_url_param";
-$response = $sg->client->contactdb()->lists()->_($list_id)->patch($request_body, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a single list
-
-This endpoint allows you to retrieve a single recipient list.
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### GET /contactdb/lists/{list_id}
-
-
-```php
-$query_params = json_decode('{"list_id": 1}');
-$list_id = "test_url_param";
-$response = $sg->client->contactdb()->lists()->_($list_id)->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a List
-
-**This endpoint allows you to delete a specific recipient list with the given ID.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### DELETE /contactdb/lists/{list_id}
-
-
-```php
-$query_params = json_decode('{"delete_contacts": "true"}');
-$list_id = "test_url_param";
-$response = $sg->client->contactdb()->lists()->_($list_id)->delete(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add Multiple Recipients to a List
-
-**This endpoint allows you to add multiple recipients to a list.**
-
-Adds existing recipients to a list, passing in the recipient IDs to add. Recipient IDs should be passed exactly as they are returned from recipient endpoints.
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### POST /contactdb/lists/{list_id}/recipients
-
-
-```php
-$request_body = json_decode('[
-  "recipient_id1",
-  "recipient_id2"
-]');
-$list_id = "test_url_param";
-$response = $sg->client->contactdb()->lists()->_($list_id)->recipients()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all recipients on a List
-
-**This endpoint allows you to retrieve all recipients on the list with the given ID.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### GET /contactdb/lists/{list_id}/recipients
-
-
-```php
-$query_params = json_decode('{"page": 1, "page_size": 1}');
-$list_id = "test_url_param";
-$response = $sg->client->contactdb()->lists()->_($list_id)->recipients()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add a Single Recipient to a List
-
-**This endpoint allows you to add a single recipient to a list.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### POST /contactdb/lists/{list_id}/recipients/{recipient_id}
-
-
-```php
-$list_id = "test_url_param";
-$recipient_id = "test_url_param";
-$response = $sg->client->contactdb()->lists()->_($list_id)->recipients()->_($recipient_id)->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a Single Recipient from a Single List
-
-**This endpoint allows you to delete a single recipient from a list.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### DELETE /contactdb/lists/{list_id}/recipients/{recipient_id}
-
-
-```php
-$query_params = json_decode('{"recipient_id": 1, "list_id": 1}');
-$list_id = "test_url_param";
-$recipient_id = "test_url_param";
-$response = $sg->client->contactdb()->lists()->_($list_id)->recipients()->_($recipient_id)->delete(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Recipient
-
-**This endpoint allows you to update one or more recipients.**
-
-The body of an API call to this endpoint must include an array of one or more recipient objects.
-
-It is of note that you can add custom field data as parameters on recipient objects. We have provided an example using some of the default custom fields Twilio SendGrid provides.
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### PATCH /contactdb/recipients
-
-
-```php
-$request_body = json_decode('[
-  {
-    "email": "jones@example.com",
-    "first_name": "Guy",
-    "last_name": "Jones"
-  }
-]');
-$response = $sg->client->contactdb()->recipients()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add recipients
-
-**This endpoint allows you to add a Marketing Campaigns recipient.**
-
-It is of note that you can add custom field data as a parameter on this endpoint. We have provided an example using some of the default custom fields Twilio SendGrid provides.
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### POST /contactdb/recipients
-
-
-```php
-$request_body = json_decode('[
-  {
-    "age": 25,
-    "email": "example@example.com",
-    "first_name": "",
-    "last_name": "User"
-  },
-  {
-    "age": 25,
-    "email": "example2@example.com",
-    "first_name": "Example",
-    "last_name": "User"
-  }
-]');
-$response = $sg->client->contactdb()->recipients()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve recipients
-
-**This endpoint allows you to retrieve all of your Marketing Campaigns recipients.**
-
-Batch deletion of a page makes it possible to receive an empty page of recipients before reaching the end of
-the list of recipients. To avoid this issue; iterate over pages until a 404 is retrieved.
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### GET /contactdb/recipients
-
-
-```php
-$query_params = json_decode('{"page": 1, "page_size": 1}');
-$response = $sg->client->contactdb()->recipients()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete Recipient
-
-**This endpoint allows you to delete one or more recipients.**
-
-The body of an API call to this endpoint must include an array of recipient IDs of the recipients you want to delete.
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### DELETE /contactdb/recipients
-
-
-```php
-$request_body = json_decode('[
-  "recipient_id1",
-  "recipient_id2"
-]');
-$response = $sg->client->contactdb()->recipients()->delete($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve the count of billable recipients
-
-**This endpoint allows you to retrieve the number of Marketing Campaigns recipients that you will be billed for.**
-
-You are billed for marketing campaigns based on the highest number of recipients you have had in your account at one time. This endpoint will allow you to know the current billable count value.
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### GET /contactdb/recipients/billable_count
-
-
-```php
-$response = $sg->client->contactdb()->recipients()->billable_count()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a Count of Recipients
-
-**This endpoint allows you to retrieve the total number of Marketing Campaigns recipients.**
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### GET /contactdb/recipients/count
-
-
-```php
-$response = $sg->client->contactdb()->recipients()->count()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve recipients matching search criteria
-
-**This endpoint allows you to perform a search on all of your Marketing Campaigns recipients.**
-
-field_name:
-
-* is a variable that is substituted for your actual custom field name from your recipient.
-* Text fields must be url-encoded. Date fields are searchable only by UNIX timestamp (e.g. 2/2/2015 becomes 1422835200)
-* If field_name is a 'reserved' date field, such as created_at or updated_at, the system will internally convert
-your epoch time to a date range encompassing the entire day. For example, an epoch time of 1422835600 converts to
-Mon, 02 Feb 2015 00:06:40 GMT, but internally the system will search from Mon, 02 Feb 2015 00:00:00 GMT through
-Mon, 02 Feb 2015 23:59:59 GMT.
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### GET /contactdb/recipients/search
-
-
-```php
-$query_params = json_decode('{"{field_name}": "test_string"}');
-$response = $sg->client->contactdb()->recipients()->search()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a single recipient
-
-**This endpoint allows you to retrieve a single recipient by ID from your contact database.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### GET /contactdb/recipients/{recipient_id}
-
-
-```php
-$recipient_id = "test_url_param";
-$response = $sg->client->contactdb()->recipients()->_($recipient_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a Recipient
-
-**This endpoint allows you to delete a single recipient with the given ID from your contact database.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### DELETE /contactdb/recipients/{recipient_id}
-
-
-```php
-$recipient_id = "test_url_param";
-$response = $sg->client->contactdb()->recipients()->_($recipient_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve the lists that a recipient is on
-
-**This endpoint allows you to retrieve the lists that a given recipient belongs to.**
-
-Each recipient can be on many lists. This endpoint gives you all of the lists that any one recipient has been added to.
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-### GET /contactdb/recipients/{recipient_id}/lists
-
-
-```php
-$recipient_id = "test_url_param";
-$response = $sg->client->contactdb()->recipients()->_($recipient_id)->lists()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve reserved fields
-
-**This endpoint allows you to list all fields that are reserved and can't be used for custom field names.**
-
-The contactdb is a database of your contacts for [Twilio SendGrid Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html).
-
-### GET /contactdb/reserved_fields
-
-
-```php
-$response = $sg->client->contactdb()->reserved_fields()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create a Segment
-
-**This endpoint allows you to create a segment.**
-
-All recipients in your contactdb will be added or removed automatically depending on whether they match the criteria for this segment.
-
-List Id:
-
-* Send this to segment from an existing list
-* Don't send this in order to segment from your entire contactdb.
-
-Valid operators for create and update depend on the type of the field you are segmenting:
-
-* **Dates:** "eq", "ne", "lt" (before), "gt" (after)
-* **Text:** "contains", "eq" (is - matches the full field), "ne" (is not - matches any field where the entire field is not the condition value)
-* **Numbers:** "eq", "lt", "gt"
-* **Email Clicks and Opens:** "eq" (opened), "ne" (not opened)
-
-Segment conditions using "eq" or "ne" for email clicks and opens should provide a "field" of either *clicks.campaign_identifier* or *opens.campaign_identifier*. The condition value should be a string containing the id of a completed campaign.
-
-Segments may contain multiple conditions, joined by an "and" or "or" in the "and_or" field. The first condition in the conditions list must have an empty "and_or", and subsequent conditions must all specify an "and_or".
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-For more information about segments in Marketing Campaigns, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/lists.html#-Create-a-Segment).
-
-### POST /contactdb/segments
-
-
-```php
-$request_body = json_decode('{
-  "conditions": [
-    {
-      "and_or": "",
-      "field": "last_name",
-      "operator": "eq",
-      "value": "Miller"
-    },
-    {
-      "and_or": "and",
-      "field": "last_clicked",
-      "operator": "gt",
-      "value": "01/02/2015"
-    },
-    {
-      "and_or": "or",
-      "field": "clicks.campaign_identifier",
-      "operator": "eq",
-      "value": "513"
-    }
-  ],
-  "list_id": 4,
-  "name": "Last Name Miller"
-}');
-$response = $sg->client->contactdb()->segments()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all segments
-
-**This endpoint allows you to retrieve all of your segments.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-For more information about segments in Marketing Campaigns, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/lists.html#-Create-a-Segment).
-
-### GET /contactdb/segments
-
-
-```php
-$response = $sg->client->contactdb()->segments()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a segment
-
-**This endpoint allows you to update a segment.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-For more information about segments in Marketing Campaigns, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/lists.html#-Create-a-Segment).
-
-### PATCH /contactdb/segments/{segment_id}
-
-
-```php
-$request_body = json_decode('{
-  "conditions": [
-    {
-      "and_or": "",
-      "field": "last_name",
-      "operator": "eq",
-      "value": "Miller"
-    }
-  ],
-  "list_id": 5,
-  "name": "The Millers"
-}');
-$query_params = json_decode('{"segment_id": "test_string"}');
-$segment_id = "test_url_param";
-$response = $sg->client->contactdb()->segments()->_($segment_id)->patch($request_body, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a segment
-
-**This endpoint allows you to retrieve a single segment with the given ID.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-For more information about segments in Marketing Campaigns, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/lists.html#-Create-a-Segment).
-
-### GET /contactdb/segments/{segment_id}
-
-
-```php
-$query_params = json_decode('{"segment_id": 1}');
-$segment_id = "test_url_param";
-$response = $sg->client->contactdb()->segments()->_($segment_id)->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a segment
-
-**This endpoint allows you to delete a segment from your recipients database.**
-
-You also have the option to delete all the contacts from your Marketing Campaigns recipient database who were in this segment.
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-For more information about segments in Marketing Campaigns, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/lists.html#-Create-a-Segment).
-
-### DELETE /contactdb/segments/{segment_id}
-
-
-```php
-$query_params = json_decode('{"delete_contacts": "true"}');
-$segment_id = "test_url_param";
-$response = $sg->client->contactdb()->segments()->_($segment_id)->delete(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve recipients on a segment
-
-**This endpoint allows you to retrieve all of the recipients in a segment with the given ID.**
-
-The Contacts API helps you manage your [Marketing Campaigns](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/index.html) recipients.
-
-For more information about segments in Marketing Campaigns, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/lists.html#-Create-a-Segment).
-
-### GET /contactdb/segments/{segment_id}/recipients
-
-
-```php
-$query_params = json_decode('{"page": 1, "page_size": 1}');
-$segment_id = "test_url_param";
-$response = $sg->client->contactdb()->segments()->_($segment_id)->recipients()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="devices"></a>
-# DEVICES
-
-## Retrieve email statistics by device type.
-
-**This endpoint allows you to retrieve your email statistics segmented by the device type.**
-
-**We only store up to 7 days of email activity in our database.** By default, 500 items will be returned per request via the Advanced Stats API endpoints.
-
-## Available Device Types
-| **Device** | **Description** | **Example** |
-|---|---|---|
-| Desktop | Email software on a desktop computer. | I.E., Outlook, Sparrow, or Apple Mail. |
-| Webmail |	A web-based email client. | I.E., Yahoo, Google, AOL, or Outlook.com. |
-| Phone | A smartphone. | iPhone, Android, Blackberry, etc.
-| Tablet | A tablet computer. | iPad, Android based tablet, etc. |
-| Other | An unrecognized device. |
-
-Advanced Stats provide a more in-depth view of your email statistics and the actions taken by your recipients. You can segment these statistics by geographic location, device type, client type, browser, and mailbox provider. For more information about statistics, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/index.html).
-
-### GET /devices/stats
-
-
-```php
-$query_params = json_decode('{"aggregated_by": "day", "limit": 1, "start_date": "2016-01-01", "end_date": "2016-04-01", "offset": 1}');
-$response = $sg->client->devices()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="geo"></a>
-# GEO
-
-## Retrieve email statistics by country and state/province.
-
-**This endpoint allows you to retrieve your email statistics segmented by country and state/province.**
-
-**We only store up to 7 days of email activity in our database.** By default, 500 items will be returned per request via the Advanced Stats API endpoints.
-
-Advanced Stats provide a more in-depth view of your email statistics and the actions taken by your recipients. You can segment these statistics by geographic location, device type, client type, browser, and mailbox provider. For more information about statistics, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/index.html).
-
-### GET /geo/stats
-
-
-```php
-$query_params = json_decode('{"end_date": "2016-04-01", "country": "US", "aggregated_by": "day", "limit": 1, "offset": 1, "start_date": "2016-01-01"}');
-$response = $sg->client->geo()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="ips"></a>
-# IPS
-
-## Retrieve all IP addresses
-
-**This endpoint allows you to retrieve a list of all assigned and unassigned IPs.**
-
-The response includes warm-up status, pools, assigned subusers, and authentication info. The start_date field corresponds to when warmup started for that IP.
-
-A single IP address or a range of IP addresses may be dedicated to an account in order to send email for multiple domains. The reputation of this IP is based on the aggregate performance of all the senders who use it.
-
-### GET /ips
-
-
-```php
-$query_params = json_decode('{"subuser": "test_string", "ip": "test_string", "limit": 1, "exclude_whitelabels": "true", "offset": 1}');
-$response = $sg->client->ips()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all assigned IPs
-
-**This endpoint allows you to retrieve only assigned IP addresses.**
-
-A single IP address or a range of IP addresses may be dedicated to an account in order to send email for multiple domains. The reputation of this IP is based on the aggregate performance of all the senders who use it.
-
-### GET /ips/assigned
-
-
-```php
-$response = $sg->client->ips()->assigned()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create an IP pool.
-
-**This endpoint allows you to create an IP pool.**
-
-**Each user can create up to 10 different IP pools.**
-
-IP Pools allow you to group your dedicated Twilio SendGrid IP addresses together. For example, you could create separate pools for your transactional and marketing email. When sending marketing emails, specify that you want to use the marketing IP pool. This allows you to maintain separate reputations for your different email traffic.
-
-IP pools can only be used with authenticated IP addresses.
-
-If an IP pool is NOT specified for an email, it will use any IP available, including ones in pools.
-
-### POST /ips/pools
-
-
-```php
-$request_body = json_decode('{
-  "name": "marketing"
-}');
-$response = $sg->client->ips()->pools()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all IP pools.
-
-**This endpoint allows you to retrieve all of your IP pools.**
-
-IP Pools allow you to group your dedicated Twilio SendGrid IP addresses together. For example, you could create separate pools for your transactional and marketing email. When sending marketing emails, specify that you want to use the marketing IP pool. This allows you to maintain separate reputations for your different email traffic.
-
-IP pools can only be used with authenticated IP addresses.
-
-If an IP pool is NOT specified for an email, it will use any IP available, including ones in pools.
-
-### GET /ips/pools
-
-
-```php
-$response = $sg->client->ips()->pools()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update an IP pools name.
-
-**This endpoint allows you to update the name of an IP pool.**
-
-IP Pools allow you to group your dedicated Twilio SendGrid IP addresses together. For example, you could create separate pools for your transactional and marketing email. When sending marketing emails, specify that you want to use the marketing IP pool. This allows you to maintain separate reputations for your different email traffic.
-
-IP pools can only be used with authenticated IP addresses.
-
-If an IP pool is NOT specified for an email, it will use any IP available, including ones in pools.
-
-### PUT /ips/pools/{pool_name}
-
-
-```php
-$request_body = json_decode('{
-  "name": "new_pool_name"
-}');
-$pool_name = "test_url_param";
-$response = $sg->client->ips()->pools()->_($pool_name)->put($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all IPs in a specified pool.
-
-**This endpoint allows you to list all of the IP addresses that are in a specific IP pool.**
-
-IP Pools allow you to group your dedicated Twilio SendGrid IP addresses together. For example, you could create separate pools for your transactional and marketing email. When sending marketing emails, specify that you want to use the marketing IP pool. This allows you to maintain separate reputations for your different email traffic.
-
-IP pools can only be used with authenticated IP addresses.
-
-If an IP pool is NOT specified for an email, it will use any IP available, including ones in pools.
-
-### GET /ips/pools/{pool_name}
-
-
-```php
-$pool_name = "test_url_param";
-$response = $sg->client->ips()->pools()->_($pool_name)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete an IP pool.
-
-**This endpoint allows you to delete an IP pool.**
-
-IP Pools allow you to group your dedicated Twilio SendGrid IP addresses together. For example, you could create separate pools for your transactional and marketing email. When sending marketing emails, specify that you want to use the marketing IP pool. This allows you to maintain separate reputations for your different email traffic.
-
-IP pools can only be used with authenticated IP addresses.
-
-If an IP pool is NOT specified for an email, it will use any IP available, including ones in pools.
-
-### DELETE /ips/pools/{pool_name}
-
-
-```php
-$pool_name = "test_url_param";
-$response = $sg->client->ips()->pools()->_($pool_name)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add an IP address to a pool
-
-**This endpoint allows you to add an IP address to an IP pool.**
-
-You can add the same IP address to multiple pools. It may take up to 60 seconds for your IP address to be added to a pool after your request is made.
-
-A single IP address or a range of IP addresses may be dedicated to an account in order to send email for multiple domains. The reputation of this IP is based on the aggregate performance of all the senders who use it.
-
-### POST /ips/pools/{pool_name}/ips
-
-
-```php
-$request_body = json_decode('{
-  "ip": "0.0.0.0"
-}');
-$pool_name = "test_url_param";
-$response = $sg->client->ips()->pools()->_($pool_name)->ips()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Remove an IP address from a pool.
-
-**This endpoint allows you to remove an IP address from an IP pool.**
-
-The same IP address can be added to multiple IP pools.
-
-A single IP address or a range of IP addresses may be dedicated to an account in order to send email for multiple domains. The reputation of this IP is based on the aggregate performance of all the senders who use it.
-
-### DELETE /ips/pools/{pool_name}/ips/{ip}
-
-
-```php
-$pool_name = "test_url_param";
-$ip = "test_url_param";
-$response = $sg->client->ips()->pools()->_($pool_name)->ips()->_($ip)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add an IP to warmup
-
-**This endpoint allows you to enter an IP address into warmup mode.**
-
-Twilio SendGrid can automatically warm up dedicated IP addresses by limiting the amount of mail that can be sent through them per hour, with the limit determined by how long the IP address has been in warmup. See the [warmup schedule](https://sendgrid.com/docs/API_Reference/Web_API_v3/IP_Management/ip_warmup_schedule.html) for more details on how Twilio SendGrid limits your email traffic for IPs in warmup.
-
-For more general information about warming up IPs, please see our [Classroom](https://sendgrid.com/docs/Classroom/Deliver/Delivery_Introduction/warming_up_ips.html).
-
-### POST /ips/warmup
-
-
-```php
-$request_body = json_decode('{
-  "ip": "0.0.0.0"
-}');
-$response = $sg->client->ips()->warmup()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all IPs currently in warmup
-
-**This endpoint allows you to retrieve all of your IP addresses that are currently warming up.**
-
-Twilio SendGrid can automatically warm up dedicated IP addresses by limiting the amount of mail that can be sent through them per hour, with the limit determined by how long the IP address has been in warmup. See the [warmup schedule](https://sendgrid.com/docs/API_Reference/Web_API_v3/IP_Management/ip_warmup_schedule.html) for more details on how Twilio SendGrid limits your email traffic for IPs in warmup.
-
-For more general information about warming up IPs, please see our [Classroom](https://sendgrid.com/docs/Classroom/Deliver/Delivery_Introduction/warming_up_ips.html).
-
-### GET /ips/warmup
-
-
-```php
-$response = $sg->client->ips()->warmup()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve warmup status for a specific IP address
-
-**This endpoint allows you to retrieve the warmup status for a specific IP address.**
-
-Twilio SendGrid can automatically warm up dedicated IP addresses by limiting the amount of mail that can be sent through them per hour, with the limit determined by how long the IP address has been in warmup. See the [warmup schedule](https://sendgrid.com/docs/API_Reference/Web_API_v3/IP_Management/ip_warmup_schedule.html) for more details on how Twilio SendGrid limits your email traffic for IPs in warmup.
-
-For more general information about warming up IPs, please see our [Classroom](https://sendgrid.com/docs/Classroom/Deliver/Delivery_Introduction/warming_up_ips.html).
-
-### GET /ips/warmup/{ip_address}
-
-
-```php
-$ip_address = "test_url_param";
-$response = $sg->client->ips()->warmup()->_($ip_address)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Remove an IP from warmup
-
-**This endpoint allows you to remove an IP address from warmup mode.**
-
-Twilio SendGrid can automatically warm up dedicated IP addresses by limiting the amount of mail that can be sent through them per hour, with the limit determined by how long the IP address has been in warmup. See the [warmup schedule](https://sendgrid.com/docs/API_Reference/Web_API_v3/IP_Management/ip_warmup_schedule.html) for more details on how Twilio SendGrid limits your email traffic for IPs in warmup.
-
-For more general information about warming up IPs, please see our [Classroom](https://sendgrid.com/docs/Classroom/Deliver/Delivery_Introduction/warming_up_ips.html).
-
-### DELETE /ips/warmup/{ip_address}
-
-
-```php
-$ip_address = "test_url_param";
-$response = $sg->client->ips()->warmup()->_($ip_address)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all IP pools an IP address belongs to
-
-**This endpoint allows you to see which IP pools a particular IP address has been added to.**
-
-The same IP address can be added to multiple IP pools.
-
-A single IP address or a range of IP addresses may be dedicated to an account in order to send email for multiple domains. The reputation of this IP is based on the aggregate performance of all the senders who use it.
-
-### GET /ips/{ip_address}
-
-
-```php
-$ip_address = "test_url_param";
-$response = $sg->client->ips()->_($ip_address)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="mail"></a>
-# MAIL
-
-## Create a batch ID
-
-**This endpoint allows you to generate a new batch ID. This batch ID can be associated with scheduled sends via the mail/send endpoint.**
-
-If you set the SMTPAPI header `batch_id`, it allows you to then associate multiple scheduled mail/send requests together with the same ID. Then at anytime up to 10 minutes before the scheduled date, you can cancel all of the mail/send requests that have this batch ID by calling the Cancel Scheduled Send endpoint.
-
-More Information:
-
-* [Scheduling Parameters > Batch ID](https://sendgrid.com/docs/API_Reference/SMTP_API/scheduling_parameters.html)
-
-### POST /mail/batch
-
-
-```php
-$response = $sg->client->mail()->batch()->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Validate batch ID
-
-**This endpoint allows you to validate a batch ID.**
-
-If you set the SMTPAPI header `batch_id`, it allows you to then associate multiple scheduled mail/send requests together with the same ID. Then at anytime up to 10 minutes before the scheduled date, you can cancel all of the mail/send requests that have this batch ID by calling the Cancel Scheduled Send endpoint.
-
-More Information:
-
-* [Scheduling Parameters > Batch ID](https://sendgrid.com/docs/API_Reference/SMTP_API/scheduling_parameters.html)
-
-### GET /mail/batch/{batch_id}
-
-
-```php
-$batch_id = "test_url_param";
-$response = $sg->client->mail()->batch()->_($batch_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## v3 Mail Send
-
-This endpoint allows you to send the email over Twilio SendGrid's v3 Web API, the most recent version of our API. If you are looking for documentation about the v2 Mail Send endpoint, please see our [v2 API Reference](https://sendgrid.com/docs/API_Reference/Web_API/mail.html).
-
-* Top level parameters are referred to as "global".
-* Individual fields within the personalizations array will override any other global, or message level, parameters that are defined outside of personalizations.
-
-For an overview of the v3 Mail Send endpoint, please visit our [v3 API Reference](https://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/index.html)
-
-For more detailed information about how to use the v3 Mail Send endpoint, please visit our [Classroom](https://sendgrid.com/docs/Classroom/Send/v3_Mail_Send/index.html).
-
-### POST /mail/send
-
-This endpoint has a helper, check it out [here](https://github.com/sendgrid/sendgrid-php/blob/master/lib/helpers/mail/README.md).
-
-```php
-$request_body = json_decode('{
-  "asm": {
-    "group_id": 1,
-    "groups_to_display": [
-      1,
-      2,
-      3
-    ]
-  },
-  "attachments": [
-    {
-      "content": "[BASE64 encoded content block here]",
-      "content_id": "ii_139db99fdb5c3704",
-      "disposition": "inline",
-      "filename": "file1.jpg",
-      "name": "file1",
-      "type": "jpg"
-    }
-  ],
-  "batch_id": "[YOUR BATCH ID GOES HERE]",
-  "categories": [
-    "category1",
-    "category2"
-  ],
-  "content": [
-    {
-      "type": "text/html",
-      "value": "<html><p>Hello, world!</p><img src=[CID GOES HERE]></img></html>"
-    }
-  ],
-  "custom_args": {
-    "New Argument 1": "New Value 1",
-    "activationAttempt": "1",
-    "customerAccountNumber": "[CUSTOMER ACCOUNT NUMBER GOES HERE]"
-  },
-  "from": {
-    "email": "sam.smith@example.com",
-    "name": "Sam Smith"
-  },
-  "headers": {},
-  "ip_pool_name": "[YOUR POOL NAME GOES HERE]",
-  "mail_settings": {
-    "bcc": {
-      "email": "ben.doe@example.com",
-      "enable": true
-    },
-    "bypass_list_management": {
-      "enable": true
-    },
-    "footer": {
-      "enable": true,
-      "html": "<p>Thanks</br>The Twilio SendGrid Team</p>",
-      "text": "Thanks,/n The Twilio SendGrid Team"
-    },
-    "sandbox_mode": {
-      "enable": false
-    },
-    "spam_check": {
-      "enable": true,
-      "post_to_url": "http://example.com/compliance",
-      "threshold": 3
-    }
-  },
-  "personalizations": [
-    {
-      "bcc": [
-        {
-          "email": "sam.doe@example.com",
-          "name": "Sam Doe"
-        }
-      ],
-      "cc": [
-        {
-          "email": "jane.doe@example.com",
-          "name": "Jane Doe"
-        }
-      ],
-      "custom_args": {
-        "New Argument 1": "New Value 1",
-        "activationAttempt": "1",
-        "customerAccountNumber": "[CUSTOMER ACCOUNT NUMBER GOES HERE]"
-      },
-      "headers": {
-        "X-Accept-Language": "en",
-        "X-Mailer": "MyApp"
-      },
-      "send_at": 1409348513,
-      "subject": "Hello, World!",
-      "substitutions": {
-        "id": "substitutions",
-        "type": "object"
-      },
-      "to": [
-        {
-          "email": "john.doe@example.com",
-          "name": "John Doe"
-        }
-      ]
-    }
-  ],
-  "reply_to": {
-    "email": "sam.smith@example.com",
-    "name": "Sam Smith"
-  },
-  "sections": {
-    "section": {
-      ":sectionName1": "section 1 text",
-      ":sectionName2": "section 2 text"
-    }
-  },
-  "send_at": 1409348513,
-  "subject": "Hello, World!",
-  "template_id": "[YOUR TEMPLATE ID GOES HERE]",
-  "tracking_settings": {
-    "click_tracking": {
-      "enable": true,
-      "enable_text": true
-    },
-    "ganalytics": {
-      "enable": true,
-      "utm_campaign": "[NAME OF YOUR REFERRER SOURCE]",
-      "utm_content": "[USE THIS SPACE TO DIFFERENTIATE YOUR EMAIL FROM ADS]",
-      "utm_medium": "[NAME OF YOUR MARKETING MEDIUM e.g. email]",
-      "utm_name": "[NAME OF YOUR CAMPAIGN]",
-      "utm_term": "[IDENTIFY PAID KEYWORDS HERE]"
-    },
-    "open_tracking": {
-      "enable": true,
-      "substitution_tag": "%opentrack"
-    },
-    "subscription_tracking": {
-      "enable": true,
-      "html": "If you would like to unsubscribe and stop receiving these emails <% clickhere %>.",
-      "substitution_tag": "<%click here%>",
-      "text": "If you would like to unsubscribe and stop receiving these emails <% click here %>."
-    }
-  }
-}');
-$response = $sg->client->mail()->send()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="mail-settings"></a>
-# MAIL SETTINGS
-
-## Retrieve all mail settings
-
-**This endpoint allows you to retrieve a list of all mail settings.**
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings
-
-
-```php
-$query_params = json_decode('{"limit": 1, "offset": 1}');
-$response = $sg->client->mail_settings()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update address whitelist mail settings
-
-**This endpoint allows you to update your current email address whitelist settings.**
-
-The address whitelist setting whitelists a specified email address or domain for which mail should never be suppressed. For example, you own the domain example.com, and one or more of your recipients use email@example.com addresses, by placing example.com in the address whitelist setting, all bounces, blocks, and unsubscribes logged for that domain will be ignored and sent as if under normal sending conditions.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/address_whitelist
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true,
-  "list": [
-    "email1@example.com",
-    "example.com"
-  ]
-}');
-$response = $sg->client->mail_settings()->address_whitelist()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve address whitelist mail settings
-
-**This endpoint allows you to retrieve your current email address whitelist settings.**
-
-The address whitelist setting whitelists a specified email address or domain for which mail should never be suppressed. For example, you own the domain example.com, and one or more of your recipients use email@example.com addresses, by placing example.com in the address whitelist setting, all bounces, blocks, and unsubscribes logged for that domain will be ignored and sent as if under normal sending conditions.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/address_whitelist
-
-
-```php
-$response = $sg->client->mail_settings()->address_whitelist()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update BCC mail settings
-
-**This endpoint allows you to update your current BCC mail settings.**
-
-When the BCC mail setting is enabled, Twilio SendGrid will automatically send a blind carbon copy (BCC) to an address for every email sent without adding that address to the header. Please note that only one email address may be entered in this field. If you wish to distribute BCCs to multiple addresses you will need to create a distribution group or use forwarding rules.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/bcc
-
-
-```php
-$request_body = json_decode('{
-  "email": "email@example.com",
-  "enabled": false
-}');
-$response = $sg->client->mail_settings()->bcc()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all BCC mail settings
-
-**This endpoint allows you to retrieve your current BCC mail settings.**
-
-When the BCC mail setting is enabled, Twilio SendGrid will automatically send a blind carbon copy (BCC) to an address for every email sent without adding that address to the header. Please note that only one email address may be entered in this field. If you wish to distribute BCCs to multiple addresses you will need to create a distribution group or use forwarding rules.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/bcc
-
-
-```php
-$response = $sg->client->mail_settings()->bcc()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update bounce purge mail settings
-
-**This endpoint allows you to update your current bounce purge settings.**
-
-This setting allows you to set a schedule for Twilio SendGrid to automatically delete contacts from your soft and hard bounce suppression lists.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/bounce_purge
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true,
-  "hard_bounces": 5,
-  "soft_bounces": 5
-}');
-$response = $sg->client->mail_settings()->bounce_purge()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve bounce purge mail settings
-
-**This endpoint allows you to retrieve your current bounce purge settings.**
-
-This setting allows you to set a schedule for Twilio SendGrid to automatically delete contacts from your soft and hard bounce suppression lists.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/bounce_purge
-
-
-```php
-$response = $sg->client->mail_settings()->bounce_purge()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update footer mail settings
-
-**This endpoint allows you to update your current Footer mail settings.**
-
-The footer setting will insert a custom footer at the bottom of the text and HTML bodies. Use the embedded HTML editor and plain text entry fields to create the content of the footers to be inserted into your emails.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/footer
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true,
-  "html_content": "...",
-  "plain_content": "..."
-}');
-$response = $sg->client->mail_settings()->footer()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve footer mail settings
-
-**This endpoint allows you to retrieve your current Footer mail settings.**
-
-The footer setting will insert a custom footer at the bottom of the text and HTML bodies. Use the embedded HTML editor and plain text entry fields to create the content of the footers to be inserted into your emails.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/footer
-
-
-```php
-$response = $sg->client->mail_settings()->footer()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update forward bounce mail settings
-
-**This endpoint allows you to update your current bounce forwarding mail settings.**
-
-Activating this setting allows you to specify an email address to which bounce reports are forwarded.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/forward_bounce
-
-
-```php
-$request_body = json_decode('{
-  "email": "example@example.com",
-  "enabled": true
-}');
-$response = $sg->client->mail_settings()->forward_bounce()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve forward bounce mail settings
-
-**This endpoint allows you to retrieve your current bounce forwarding mail settings.**
-
-Activating this setting allows you to specify an email address to which bounce reports are forwarded.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/forward_bounce
-
-
-```php
-$response = $sg->client->mail_settings()->forward_bounce()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update forward spam mail settings
-
-**This endpoint allows you to update your current Forward Spam mail settings.**
-
-Enabling the forward spam setting allows you to specify an email address to which spam reports will be forwarded.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/forward_spam
-
-
-```php
-$request_body = json_decode('{
-  "email": "",
-  "enabled": false
-}');
-$response = $sg->client->mail_settings()->forward_spam()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve forward spam mail settings
-
-**This endpoint allows you to retrieve your current Forward Spam mail settings.**
-
-Enabling the forward spam setting allows you to specify an email address to which spam reports will be forwarded.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/forward_spam
-
-
-```php
-$response = $sg->client->mail_settings()->forward_spam()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update plain content mail settings
-
-**This endpoint allows you to update your current Plain Content mail settings.**
-
-The plain content setting will automatically convert any plain text emails that you send to HTML before sending.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/plain_content
-
-
-```php
-$request_body = json_decode('{
-  "enabled": false
-}');
-$response = $sg->client->mail_settings()->plain_content()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve plain content mail settings
-
-**This endpoint allows you to retrieve your current Plain Content mail settings.**
-
-The plain content setting will automatically convert any plain text emails that you send to HTML before sending.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrids' [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/plain_content
-
-
-```php
-$response = $sg->client->mail_settings()->plain_content()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update spam check mail settings
-
-**This endpoint allows you to update your current spam checker mail settings.**
-
-The spam checker filter notifies you when emails are detected that exceed a predefined spam threshold.
-
-Mail settings allow you to tell Twilio Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/spam_check
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true,
-  "max_score": 5,
-  "url": "url"
-}');
-$response = $sg->client->mail_settings()->spam_check()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve spam check mail settings
-
-**This endpoint allows you to retrieve your current Spam Checker mail settings.**
-
-The spam checker filter notifies you when emails are detected that exceed a predefined spam threshold.
-
-Mail settings allow you to tell Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/spam_check
-
-
-```php
-$response = $sg->client->mail_settings()->spam_check()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update template mail settings
-
-**This endpoint allows you to update your current legacy email template settings.**
-
-This setting refers to our original email templates. We currently support more fully featured [transactional templates](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-The legacy email template setting wraps an HTML template around your email content. This can be useful for sending out marketing email and/or other HTML formatted messages.
-
-Mail settings allow you to tell Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### PATCH /mail_settings/template
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true,
-  "html_content": "<% body %>"
-}');
-$response = $sg->client->mail_settings()->template()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve legacy template mail settings
-
-**This endpoint allows you to retrieve your current legacy email template settings.**
-
-This setting refers to our original email templates. We currently support more fully featured [transactional templates](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-The legacy email template setting wraps an HTML template around your email content. This can be useful for sending out marketing email and/or other HTML formatted messages.
-
-Mail settings allow you to tell Twilio SendGrid specific things to do to every email that you send to your recipients over Twilio SendGrid's [Web API](https://sendgrid.com/docs/API_Reference/Web_API/mail.html) or [SMTP Relay](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html).
-
-### GET /mail_settings/template
-
-
-```php
-$response = $sg->client->mail_settings()->template()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="mailbox-providers"></a>
-# MAILBOX PROVIDERS
-
-## Retrieve email statistics by mailbox provider.
-
-**This endpoint allows you to retrieve your email statistics segmented by recipient mailbox provider.**
-
-**We only store up to 7 days of email activity in our database.** By default, 500 items will be returned per request via the Advanced Stats API endpoints.
-
-Advanced Stats provide a more in-depth view of your email statistics and the actions taken by your recipients. You can segment these statistics by geographic location, device type, client type, browser, and mailbox provider. For more information about statistics, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/index.html).
-
-### GET /mailbox_providers/stats
-
-
-```php
-$query_params = json_decode('{"end_date": "2016-04-01", "mailbox_providers": "test_string", "aggregated_by": "day", "limit": 1, "offset": 1, "start_date": "2016-01-01"}');
-$response = $sg->client->mailbox_providers()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="partner-settings"></a>
-# PARTNER SETTINGS
-
-## Returns a list of all partner settings.
-
-**This endpoint allows you to retrieve a list of all partner settings that you can enable.**
-
-Our partner settings allow you to integrate your Twilio SendGrid account with our partners to increase your Twilio SendGrid experience and functionality. For more information about our partners, and how you can begin integrating with them, please visit our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/partners.html).
-
-### GET /partner_settings
-
-
-```php
-$query_params = json_decode('{"limit": 1, "offset": 1}');
-$response = $sg->client->partner_settings()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Updates New Relic partner settings.
-
-**This endpoint allows you to update or change your New Relic partner settings.**
-
-Our partner settings allow you to integrate your Twilio SendGrid account with our partners to increase your Twilio SendGrid experience and functionality. For more information about our partners, and how you can begin integrating with them, please visit our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/partners.html).
-
-By integrating with New Relic, you can send your Twilio SendGrid email statistics to your New Relic Dashboard. If you enable this setting, your stats will be sent to New Relic every 5 minutes. You will need your New Relic License Key to enable this setting. For more information, please see our [Classroom](https://sendgrid.com/docs/Classroom/Track/Collecting_Data/new_relic.html).
-
-### PATCH /partner_settings/new_relic
-
-
-```php
-$request_body = json_decode('{
-  "enable_subuser_statistics": true,
-  "enabled": true,
-  "license_key": ""
-}');
-$response = $sg->client->partner_settings()->new_relic()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Returns all New Relic partner settings.
-
-**This endpoint allows you to retrieve your current New Relic partner settings.**
-
-Our partner settings allow you to integrate your Twilio SendGrid account with our partners to increase your Twilio SendGrid experience and functionality. For more information about our partners, and how you can begin integrating with them, please visit our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/partners.html).
-
-By integrating with New Relic, you can send your Twilio SendGrid email statistics to your New Relic Dashboard. If you enable this setting, your stats will be sent to New Relic every 5 minutes. You will need your New Relic License Key to enable this setting. For more information, please see our [Classroom](https://sendgrid.com/docs/Classroom/Track/Collecting_Data/new_relic.html).
-
-### GET /partner_settings/new_relic
-
-
-```php
-$response = $sg->client->partner_settings()->new_relic()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="scopes"></a>
-# SCOPES
-
-## Retrieve a list of scopes for which this user has access.
-
-**This endpoint returns a list of all scopes that this user has access to.**
-
-API Keys can be used to authenticate the use of [SendGrids v3 Web API](https://sendgrid.com/docs/API_Reference/Web_API_v3/index.html), or the [Mail API Endpoint](https://sendgrid.com/docs/API_Reference/Web_API/mail.html). API Keys may be assigned certain permissions, or scopes, that limit which API endpoints they are able to access. For a more detailed explanation of how you can use API Key permissions, please visit our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/api_keys.html#-API-Key-Permissions) or [Classroom](https://sendgrid.com/docs/Classroom/Basics/API/api_key_permissions.html).
-
-### GET /scopes
-
-
-```php
-$response = $sg->client->scopes()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="senders"></a>
-# SENDERS
-
-## Create a Sender Identity
-
-**This endpoint allows you to create a new sender identity.**
-
-*You may create up to 100 unique sender identities.*
-
-Sender Identities are required to be verified before use. If your domain has been authenticated it will auto verify on creation. Otherwise, an email will be sent to the `from.email`.
-
-### POST /senders
-
-
-```php
-$request_body = json_decode('{
-  "address": "123 Elm St.",
-  "address_2": "Apt. 456",
-  "city": "Denver",
-  "country": "United States",
-  "from": {
-    "email": "from@example.com",
-    "name": "Example INC"
-  },
-  "nickname": "My Sender ID",
-  "reply_to": {
-    "email": "replyto@example.com",
-    "name": "Example INC"
-  },
-  "state": "Colorado",
-  "zip": "80202"
-}');
-$response = $sg->client->senders()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Get all Sender Identities
-
-**This endpoint allows you to retrieve a list of all sender identities that have been created for your account.**
-
-Sender Identities are required to be verified before use. If your domain has been authenticated it will auto verify on creation. Otherwise, an email will be sent to the `from.email`.
-
-### GET /senders
-
-
-```php
-$response = $sg->client->senders()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a Sender Identity
-
-**This endpoint allows you to update a sender identity.**
-
-Updates to `from.email` require re-verification. If your domain has been authenticated it will auto verify on creation. Otherwise, an email will be sent to the `from.email`.
-
-Partial updates are allowed, but fields that are marked as "required" in the POST (create) endpoint must not be nil if that field is included in the PATCH request.
-
-### PATCH /senders/{sender_id}
-
-
-```php
-$request_body = json_decode('{
-  "address": "123 Elm St.",
-  "address_2": "Apt. 456",
-  "city": "Denver",
-  "country": "United States",
-  "from": {
-    "email": "from@example.com",
-    "name": "Example INC"
-  },
-  "nickname": "My Sender ID",
-  "reply_to": {
-    "email": "replyto@example.com",
-    "name": "Example INC"
-  },
-  "state": "Colorado",
-  "zip": "80202"
-}');
-$sender_id = "test_url_param";
-$response = $sg->client->senders()->_($sender_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## View a Sender Identity
-
-**This endpoint allows you to retrieve a specific sender identity.**
-
-Sender Identities are required to be verified before use. If your domain has been authenticated it will auto verify on creation. Otherwise, an email will be sent to the `from.email`.
-
-### GET /senders/{sender_id}
-
-
-```php
-$sender_id = "test_url_param";
-$response = $sg->client->senders()->_($sender_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a Sender Identity
-
-**This endpoint allows you to delete one of your sender identities.**
-
-Sender Identities are required to be verified before use. If your domain has been authenticated it will auto verify on creation. Otherwise, an email will be sent to the `from.email`.
-
-### DELETE /senders/{sender_id}
-
-
-```php
-$sender_id = "test_url_param";
-$response = $sg->client->senders()->_($sender_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Resend Sender Identity Verification
-
-**This endpoint allows you to resend a sender identity verification email.**
-
-Sender Identities are required to be verified before use. If your domain has been authenticated it will auto verify on creation. Otherwise, an email will be sent to the `from.email`.
-
-### POST /senders/{sender_id}/resend_verification
-
-
-```php
-$sender_id = "test_url_param";
-$response = $sg->client->senders()->_($sender_id)->resend_verification()->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="sender-authentication"></a>
-# SENDER AUTHENTICATION
-
-## Create an authenticated domain.
-
-**This endpoint allows you to create a domain authentication for one of your domains.**
-
-If you are creating a domain authentication that you would like a subuser to use, you have two options:
-1. Use the "username" parameter. This allows you to create am authenticated subuser. This means the subuser is able to see and modify the created authentication.
-2. Use the Association workflow (see Associate Domain section). This allows you to assign a domain authentication created by the parent to a subuser. This means the subuser will default to the assigned domain authentication, but will not be able to see or modify that authentication. However, if the subuser creates their own domain authentication it will overwrite the assigned domain authentication.
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-### POST /whitelabel/domains
-
-
-```php
-$request_body = json_decode('{
-  "automatic_security": false,
-  "custom_spf": true,
-  "default": true,
-  "domain": "example.com",
-  "ips": [
-    "192.168.1.1",
-    "192.168.1.2"
-  ],
-  "subdomain": "news",
-  "username": "john@example.com"
-}');
-$response = $sg->client->whitelabel()->domains()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## List all domain authentications.
-
-**This endpoint allows you to retrieve a list of all domain authentications you have created.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-### GET /whitelabel/domains
-
-
-```php
-$query_params = json_decode('{"username": "test_string", "domain": "test_string", "exclude_subusers": "true", "limit": 1, "offset": 1}');
-$response = $sg->client->whitelabel()->domains()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Get the default domain authentication.
-
-**This endpoint allows you to retrieve the default authentication for a domain.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-## URI Parameters
-| URI Parameter   | Type   | Description  |
-|---|---|---|
-| domain | string  |The domain to find a default domain whitelabel for. |
-
-### GET /whitelabel/domains/default
-
-
-```php
-$response = $sg->client->whitelabel()->domains()->default()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## List the domain authentication associated with the given user.
-
-**This endpoint allows you to retrieve all of the domain authentications that have been assigned to a specific subuser.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio  can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-Domain authentications can be associated with (i.e. assigned to) subusers from a parent account. This functionality allows subusers to send mail using their parent's authenticated domains. To associate a domain authentication with a subuser, the parent account must first create the domain authentication and validate it. The parent may then associate the domain authentication via the subuser management tools.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-## URI Parameters
-| URI Parameter   | Type  | Description  |
-|---|---|---|
-| username | string  | Username of the subuser to find associated whitelabels for. |
-
-### GET /whitelabel/domains/subuser
-
-
-```php
-$response = $sg->client->whitelabel()->domains()->subuser()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Disassociate a domain authentication from a given user.
-
-**This endpoint allows you to disassociate a specific domain authentication from a subuser.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-Domain authentications can be associated with (i.e. assigned to) subusers from a parent account. This functionality allows subusers to send mail using their parent's authenticated domains. To associate a domain authentication with a subuser, the parent account must first create the domain authentication and validate it. The parent may then associate the domain authentication via the subuser management tools.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-## URI Parameters
-| URI Parameter   | Type  | Required?  | Description  |
-|---|---|---|---|
-| username | string  | required  | Username for the subuser to find associated whitelabels for. |
-
-### DELETE /whitelabel/domains/subuser
-
-
-```php
-$response = $sg->client->whitelabel()->domains()->subuser()->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a domain authentication.
-
-**This endpoint allows you to update the settings for a domain authentication.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-### PATCH /whitelabel/domains/{domain_id}
-
-
-```php
-$request_body = json_decode('{
-  "custom_spf": true,
-  "default": false
-}');
-$domain_id = "test_url_param";
-$response = $sg->client->whitelabel()->domains()->_($domain_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a domain authentication.
-
-**This endpoint allows you to retrieve a specific domain authentication.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-
-### GET /whitelabel/domains/{domain_id}
-
-
-```php
-$domain_id = "test_url_param";
-$response = $sg->client->whitelabel()->domains()->_($domain_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a domain authentication.
-
-**This endpoint allows you to delete a domain authentication.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-### DELETE /whitelabel/domains/{domain_id}
-
-
-```php
-$domain_id = "test_url_param";
-$response = $sg->client->whitelabel()->domains()->_($domain_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Associate a domain authentication with a given user.
-
-**This endpoint allows you to associate a specific domain authentication with a subuser.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-Domain authentications can be associated with (i.e. assigned to) subusers from a parent account. This functionality allows subusers to send mail using their parent's authenticated domains. To associate a domain authentication with a subuser, the parent account must first create the domain authentication and validate it. The parent may then associate the domain authentication via the subuser management tools.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-## URI Parameters
-| URI Parameter   | Type   | Description  |
-|---|---|---|
-| domain_id | integer   | ID of the domain whitelabel to associate with the subuser. |
-
-### POST /whitelabel/domains/{domain_id}/subuser
-
-
-```php
-$request_body = json_decode('{
-  "username": "jane@example.com"
-}');
-$domain_id = "test_url_param";
-$response = $sg->client->whitelabel()->domains()->_($domain_id)->subuser()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Add an IP to a domain authentication.
-
-**This endpoint allows you to add an IP address to a domain authentication.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-## URI Parameters
-| URI Parameter   | Type  |  Description  |
-|---|---|---|
-| id | integer  | ID of the domain to which you are adding an IP |
-
-### POST /whitelabel/domains/{id}/ips
-
-
-```php
-$request_body = json_decode('{
-  "ip": "192.168.0.1"
-}');
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->domains()->_($id)->ips()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Remove an IP from a domain authenticaiton.
-
-**This endpoint allows you to remove a domain's IP address from that domain's authentication.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-## URI Parameters
-| URI Parameter   | Type  | Description  |
-|---|---|---|
-| id | integer  | ID of the domain whitelabel to delete the IP from. |
-| ip | string | IP to remove from the domain whitelabel. |
-
-### DELETE /whitelabel/domains/{id}/ips/{ip}
-
-
-```php
-$id = "test_url_param";
-$ip = "test_url_param";
-$response = $sg->client->whitelabel()->domains()->_($id)->ips()->_($ip)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Validate a domain authentication.
-
-**This endpoint allows you to validate a domain authentication. If it fails, it will return an error message describing why the domain could not be validated.**
-
-A domain authentication allows you to remove the via or sent on behalf of message that your recipients see when they read your emails. Authenticating a domain allows you to replace sendgrid.net with your personal sending domain. You will be required to create a subdomain so that Twilio SendGrid can generate the DNS records which you must give to your host provider. If you choose to use Automated Security, Twilio SendGrid will provide you with 3 CNAME records. If you turn Automated Security off, you will be given 2 TXT records and 1 MX record.
-
-For more information on domain authentication, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/)
-
-## URI Parameters
-| URI Parameter   | Type   | Description  |
-|---|---|---|
-| id | integer  |ID of the domain whitelabel to validate. |
-
-### POST /whitelabel/domains/{id}/validate
-
-
-```php
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->domains()->_($id)->validate()->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create a reverse DNS record
-
-**This endpoint allows you to create a reverse DNS record.**
-
-When creating a reverse DNS record, you should use the same subdomain that you used when you created a domain authentication.
-
-Reverse DNS consists of a subdomain and domain that will be used to generate a record for a given IP. Once Twilio SendGrid has verified that the appropriate A record for the IP has been created, the appropriate reverse DNS record for the IP is generated.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/).
-
-### POST /whitelabel/ips
-
-
-```php
-$request_body = json_decode('{
-  "domain": "example.com",
-  "ip": "192.168.1.1",
-  "subdomain": "email"
-}');
-$response = $sg->client->whitelabel()->ips()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all reverse DNS records
-
-**This endpoint allows you to retrieve all of the reverse DNS records that have been created by this account.**
-
-You may include a search key by using the "ip" parameter. This enables you to perform a prefix search for a given IP segment (e.g. "192.").
-
-Reverse DNS consists of a subdomain and domain that will be used to generate a record for a given IP. Once Twilio SendGrid has verified that the appropriate A record for the IP has been created, the appropriate reverse DNS record for the IP is generated.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/).
-
-### GET /whitelabel/ips
-
-
-```php
-$query_params = json_decode('{"ip": "test_string", "limit": 1, "offset": 1}');
-$response = $sg->client->whitelabel()->ips()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve an reverse DNS record
-
-**This endpoint allows you to retrieve a reverse DNS record.**
-
-Reverse DNS consists of a subdomain and domain that will be used to generate a record for a given IP. Once Twilio SendGrid has verified that the appropriate A record for the IP has been created, the appropriate reverse DNS record for the IP is generated.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/).
-
-### GET /whitelabel/ips/{id}
-
-
-```php
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->ips()->_($id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete an reverse DNS record
-
-**This endpoint allows you to delete a reverse DNS record.**
-
-Reverse DNS consists of a subdomain and domain that will be used to generate a record for a given IP. Once Twilio SendGrid has verified that the appropriate A record for the IP has been created, the appropriate reverse DNS record for the IP is generated.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/).
-
-### DELETE /whitelabel/ips/{id}
-
-
-```php
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->ips()->_($id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Validate a reverse DNS record
-
-**This endpoint allows you to validate a reverse DNS record.**
-
-Reverse DNS consists of a subdomain and domain that will be used to generate a record for a given IP. Once Twilio SendGrid has verified that the appropriate A record for the IP has been created, the appropriate reverse DNS record for the IP is generated.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/).
-
-### POST /whitelabel/ips/{id}/validate
-
-
-```php
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->ips()->_($id)->validate()->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create a Branded Link
-
-**This endpoint allows you to create a new link branding.**
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### POST /whitelabel/links
-
-
-```php
-$request_body = json_decode('{
-  "default": true,
-  "domain": "example.com",
-  "subdomain": "mail"
-}');
-$query_params = json_decode('{"limit": 1, "offset": 1}');
-$response = $sg->client->whitelabel()->links()->post($request_body, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all link brandings
-
-**This endpoint allows you to retrieve all link brandings.**
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### GET /whitelabel/links
-
-
-```php
-$query_params = json_decode('{"limit": 1}');
-$response = $sg->client->whitelabel()->links()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a Default Link Branding
-
-**This endpoint allows you to retrieve the default link branding.**
-
-Default link branding is the actual link branding to be used when sending messages. If there are multiple link brandings, the default is determined by the following order:
-<ul>
-  <li>Validated link branding marked as "default"</li>
-  <li>Legacy link brands (migrated from the whitelabel wizard)</li>
-  <li>Default Twilio SendGrid link whitelabel (i.e. 100.ct.sendgrid.net)</li>
-</ul>
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### GET /whitelabel/links/default
-
-
-```php
-$query_params = json_decode('{"domain": "test_string"}');
-$response = $sg->client->whitelabel()->links()->default()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve Associated Link Branding
-
-**This endpoint allows you to retrieve the associated link branding for a subuser.**
-
-Link branding can be associated with subusers from the parent account. This functionality allows
-subusers to send mail using their parent's link brands. To associate a link branding, the parent account
-must first create a branded link and validate it. The parent may then associate that branded link with a subuser via the API or the Subuser Management page in the user interface.
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### GET /whitelabel/links/subuser
-
-
-```php
-$query_params = json_decode('{"username": "test_string"}');
-$response = $sg->client->whitelabel()->links()->subuser()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Disassociate a Link Branding
-
-**This endpoint allows you to disassociate a link branding from a subuser.**
-
-Link branding can be associated with subusers from the parent account. This functionality allows
-subusers to send mail using their parent's link brands. To associate a link branding, the parent account
-must first create a branded link and validate it. The parent may then associate that branded link with a subuser via the API or the Subuser Management page in the user interface.
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### DELETE /whitelabel/links/subuser
-
-
-```php
-$query_params = json_decode('{"username": "test_string"}');
-$response = $sg->client->whitelabel()->links()->subuser()->delete(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a Link Branding
-
-**This endpoint allows you to update a specific link branding. You can use this endpoint to change a branded link's default status.**
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### PATCH /whitelabel/links/{id}
-
-
-```php
-$request_body = json_decode('{
-  "default": true
-}');
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->links()->_($id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a Link Branding
-
-**This endpoint allows you to retrieve a specific link branding.**
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### GET /whitelabel/links/{id}
-
-
-```php
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->links()->_($id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a Link Branding
-
-**This endpoint allows you to delete a link branding.**
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### DELETE /whitelabel/links/{id}
-
-
-```php
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->links()->_($id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Validate a Link Branding
-
-**This endpoint allows you to validate a link branding.**
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### POST /whitelabel/links/{id}/validate
-
-
-```php
-$id = "test_url_param";
-$response = $sg->client->whitelabel()->links()->_($id)->validate()->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Associate a Link Branding
-
-**This endpoint allows you to associate a link branding with a subuser account.**
-
-Link branding can be associated with subusers from the parent account. This functionality allows
-subusers to send mail using their parent's link brands. To associate a link branding, the parent account
-must first create a branded link and validate it. The parent may then associate that branded link with a subuser via the API or the Subuser Management page in the user interface.
-
-Email link branding allow all of the click-tracked links you send in your emails to include the URL of your domain instead of sendgrid.net.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-link-branding/).
-
-### POST /whitelabel/links/{link_id}/subuser
-
-
-```php
-$request_body = json_decode('{
-  "username": "jane@example.com"
-}');
-$link_id = "test_url_param";
-$response = $sg->client->whitelabel()->links()->_($link_id)->subuser()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-
-<a name="stats"></a>
-# STATS
-
-## Retrieve global email statistics
-
-**This endpoint allows you to retrieve all of your global email statistics between a given date range.**
-
-Parent accounts will see aggregated stats for their account and all subuser accounts. Subuser accounts will only see their own stats.
-
-### GET /stats
-
-
-```php
-$query_params = json_decode('{"aggregated_by": "day", "limit": 1, "start_date": "2016-01-01", "end_date": "2016-04-01", "offset": 1}');
-$response = $sg->client->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="subusers"></a>
-# SUBUSERS
-
-## Create Subuser
-
-This endpoint allows you to retrieve a list of all of your subusers. You can choose to retrieve specific subusers as well as limit the results that come back from the API.
-
-For more information about Subusers:
-
-* [User Guide > Subusers](https://sendgrid.com/docs/User_Guide/Settings/Subusers/index.html)
-* [Classroom > How do I add more subusers to my account?](https://sendgrid.com/docs/Classroom/Basics/Account/how_do_i_add_more_subusers_to_my_account.html)
-
-### POST /subusers
-
-
-```php
-$request_body = json_decode('{
-  "email": "John@example.com",
-  "ips": [
-    "1.1.1.1",
-    "2.2.2.2"
-  ],
-  "password": "johns_password",
-  "username": "John@example.com"
-}');
-$response = $sg->client->subusers()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## List all Subusers
-
-This endpoint allows you to retrieve a list of all of your subusers. You can choose to retrieve specific subusers as well as limit the results that come back from the API.
-
-For more information about Subusers:
-
-* [User Guide > Subusers](https://sendgrid.com/docs/User_Guide/Settings/Subusers/index.html)
-* [Classroom > How do I add more subusers to my account?](https://sendgrid.com/docs/Classroom/Basics/Account/how_do_i_add_more_subusers_to_my_account.html)
-
-### GET /subusers
-
-
-```php
-$query_params = json_decode('{"username": "test_string", "limit": 1, "offset": 1}');
-$response = $sg->client->subusers()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve Subuser Reputations
-
-Subuser sender reputations give a good idea how well a sender is doing with regards to how recipients and recipient servers react to the mail that is being received. When a bounce, spam report, or other negative action happens on a sent email, it will effect your sender rating.
-
-This endpoint allows you to request the reputations for your subusers.
-
-### GET /subusers/reputations
-
-
-```php
-$query_params = json_decode('{"usernames": "test_string"}');
-$response = $sg->client->subusers()->reputations()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve email statistics for your subusers.
-
-**This endpoint allows you to retrieve the email statistics for the given subusers.**
-
-You may retrieve statistics for up to 10 different subusers by including an additional _subusers_ parameter for each additional subuser.
-
-While you can always view the statistics for all email activity on your account, subuser statistics enable you to view specific segments of your stats. Emails sent, bounces, and spam reports are always tracked for subusers. Unsubscribes, clicks, and opens are tracked if you have enabled the required settings.
-
-For more information, see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/subuser.html).
-
-### GET /subusers/stats
-
-
-```php
-$query_params = json_decode('{"end_date": "2016-04-01", "aggregated_by": "day", "limit": 1, "offset": 1, "start_date": "2016-01-01", "subusers": "test_string"}');
-$response = $sg->client->subusers()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve monthly stats for all subusers
-
-**This endpoint allows you to retrieve the monthly email statistics for all subusers over the given date range.**
-
-While you can always view the statistics for all email activity on your account, subuser statistics enable you to view specific segments of your stats for your subusers. Emails sent, bounces, and spam reports are always tracked for subusers. Unsubscribes, clicks, and opens are tracked if you have enabled the required settings.
-
-When using the `sort_by_metric` to sort your stats by a specific metric, you can not sort by the following metrics:
-`bounce_drops`, `deferred`, `invalid_emails`, `processed`, `spam_report_drops`, `spam_reports`, or `unsubscribe_drops`.
-
-For more information, see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/subuser.html).
-
-### GET /subusers/stats/monthly
-
-
-```php
-$query_params = json_decode('{"subuser": "test_string", "limit": 1, "sort_by_metric": "test_string", "offset": 1, "date": "test_string", "sort_by_direction": "asc"}');
-$response = $sg->client->subusers()->stats()->monthly()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-##  Retrieve the totals for each email statistic metric for all subusers.
-
-**This endpoint allows you to retrieve the total sums of each email statistic metric for all subusers over the given date range.**
-
-
-While you can always view the statistics for all email activity on your account, subuser statistics enable you to view specific segments of your stats. Emails sent, bounces, and spam reports are always tracked for subusers. Unsubscribes, clicks, and opens are tracked if you have enabled the required settings.
-
-For more information, see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/subuser.html).
-
-### GET /subusers/stats/sums
-
-
-```php
-$query_params = json_decode('{"end_date": "2016-04-01", "aggregated_by": "day", "limit": 1, "sort_by_metric": "test_string", "offset": 1, "start_date": "2016-01-01", "sort_by_direction": "asc"}');
-$response = $sg->client->subusers()->stats()->sums()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Enable/disable a subuser
-
-This endpoint allows you to enable or disable a subuser.
-
-For more information about Subusers:
-
-* [User Guide > Subusers](https://sendgrid.com/docs/User_Guide/Settings/Subusers/index.html)
-* [Classroom > How do I add more subusers to my account?](https://sendgrid.com/docs/Classroom/Basics/Account/how_do_i_add_more_subusers_to_my_account.html)
-
-### PATCH /subusers/{subuser_name}
-
-
-```php
-$request_body = json_decode('{
-  "disabled": false
-}');
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a subuser
-
-This endpoint allows you to delete a subuser. This is a permanent action, once deleted a subuser cannot be retrieved.
-
-For more information about Subusers:
-
-* [User Guide > Subusers](https://sendgrid.com/docs/User_Guide/Settings/Subusers/index.html)
-* [Classroom > How do I add more subusers to my account?](https://sendgrid.com/docs/Classroom/Basics/Account/how_do_i_add_more_subusers_to_my_account.html)
-
-### DELETE /subusers/{subuser_name}
-
-
-```php
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update IPs assigned to a subuser
-
-Each subuser should be assigned to an IP address, from which all of this subuser's mail will be sent. Often, this is the same IP as the parent account, but each subuser can have their own, or multiple, IP addresses as well.
-
-More information:
-
-* [How to request more IPs](https://sendgrid.com/docs/Classroom/Basics/Account/adding_an_additional_dedicated_ip_to_your_account.html)
-* [How to set up reverse DNS](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/)
-
-### PUT /subusers/{subuser_name}/ips
-
-
-```php
-$request_body = json_decode('[
-  "127.0.0.1"
-]');
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->ips()->put($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Monitor Settings for a subuser
-
-Subuser monitor settings allow you to receive a sample of an outgoing message by a specific customer at a specific frequency of emails.
-
-### PUT /subusers/{subuser_name}/monitor
-
-
-```php
-$request_body = json_decode('{
-  "email": "example@example.com",
-  "frequency": 500
-}');
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->monitor()->put($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create monitor settings
-
-Subuser monitor settings allow you to receive a sample of an outgoing message by a specific customer at a specific frequency of emails.
-
-### POST /subusers/{subuser_name}/monitor
-
-
-```php
-$request_body = json_decode('{
-  "email": "example@example.com",
-  "frequency": 50000
-}');
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->monitor()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve monitor settings for a subuser
-
-Subuser monitor settings allow you to receive a sample of an outgoing message by a specific customer at a specific frequency of emails.
-
-### GET /subusers/{subuser_name}/monitor
-
-
-```php
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->monitor()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete monitor settings
-
-Subuser monitor settings allow you to receive a sample of an outgoing message by a specific customer at a specific frequency of emails.
-
-### DELETE /subusers/{subuser_name}/monitor
-
-
-```php
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->monitor()->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve the monthly email statistics for a single subuser
-
-**This endpoint allows you to retrieve the monthly email statistics for a specific subuser.**
-
-While you can always view the statistics for all email activity on your account, subuser statistics enable you to view specific segments of your stats for your subusers. Emails sent, bounces, and spam reports are always tracked for subusers. Unsubscribes, clicks, and opens are tracked if you have enabled the required settings.
-
-When using the `sort_by_metric` to sort your stats by a specific metric, you can not sort by the following metrics:
-`bounce_drops`, `deferred`, `invalid_emails`, `processed`, `spam_report_drops`, `spam_reports`, or `unsubscribe_drops`.
-
-For more information, see our [User Guide](https://sendgrid.com/docs/User_Guide/Statistics/subuser.html).
-
-### GET /subusers/{subuser_name}/stats/monthly
-
-
-```php
-$query_params = json_decode('{"date": "test_string", "sort_by_direction": "asc", "limit": 1, "sort_by_metric": "test_string", "offset": 1}');
-$subuser_name = "test_url_param";
-$response = $sg->client->subusers()->_($subuser_name)->stats()->monthly()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="suppression"></a>
-# SUPPRESSION
-
-## Retrieve all blocks
-
-**This endpoint allows you to retrieve a list of all email addresses that are currently on your blocks list.**
-
-[Blocks](https://sendgrid.com/docs/Glossary/blocks.html) happen when your message was rejected for a reason related to the message, not the recipient address. This can happen when your mail server IP address has been added to a blacklist or blocked by an ISP, or if the message content is flagged by a filter on the receiving server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/blocks.html).
-
-### GET /suppression/blocks
-
-
-```php
-$query_params = json_decode('{"start_time": 1, "limit": 1, "end_time": 1, "offset": 1}');
-$response = $sg->client->suppression()->blocks()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete blocks
-
-**This endpoint allows you to delete all email addresses on your blocks list.**
-
-There are two options for deleting blocked emails:
-
-1. You can delete all blocked emails by setting `delete_all` to true in the request body.
-2. You can delete some blocked emails by specifying the email addresses in an array in the request body.
-
-[Blocks](https://sendgrid.com/docs/Glossary/blocks.html) happen when your message was rejected for a reason related to the message, not the recipient address. This can happen when your mail server IP address has been added to a blacklist or blocked by an ISP, or if the message content is flagged by a filter on the receiving server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/blocks.html).
-
-### DELETE /suppression/blocks
-
-
-```php
-$request_body = json_decode('{
-  "delete_all": false,
-  "emails": [
-    "example1@example.com",
-    "example2@example.com"
-  ]
-}');
-$response = $sg->client->suppression()->blocks()->delete($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a specific block
-
-**This endpoint allows you to retrieve a specific email address from your blocks list.**
-
-[Blocks](https://sendgrid.com/docs/Glossary/blocks.html) happen when your message was rejected for a reason related to the message, not the recipient address. This can happen when your mail server IP address has been added to a blacklist or blocked by an ISP, or if the message content is flagged by a filter on the receiving server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/blocks.html).
-
-### GET /suppression/blocks/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->suppression()->blocks()->_($email)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a specific block
-
-**This endpoint allows you to delete a specific email address from your blocks list.**
-
-[Blocks](https://sendgrid.com/docs/Glossary/blocks.html) happen when your message was rejected for a reason related to the message, not the recipient address. This can happen when your mail server IP address has been added to a blacklist or blocked by an ISP, or if the message content is flagged by a filter on the receiving server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/blocks.html).
-
-### DELETE /suppression/blocks/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->suppression()->blocks()->_($email)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all bounces
-
-**This endpoint allows you to retrieve all of your bounces.**
-
-Bounces are messages that are returned to the server that sent it.
-
-For more information see:
-
-* [User Guide > Bounces](https://sendgrid.com/docs/User_Guide/Suppressions/bounces.html) for more information
-* [Glossary > Bounces](https://sendgrid.com/docs/Glossary/Bounces.html)
-
-### GET /suppression/bounces
-
-
-```php
-$query_params = json_decode('{"start_time": 1, "end_time": 1}');
-$response = $sg->client->suppression()->bounces()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete bounces
-
-**This endpoint allows you to delete all of your bounces. You can also use this endpoint to remove a specific email address from your bounce list.**
-
-Bounces are messages that are returned to the server that sent it.
-
-For more information see:
-
-* [User Guide > Bounces](https://sendgrid.com/docs/User_Guide/Suppressions/bounces.html) for more information
-* [Glossary > Bounces](https://sendgrid.com/docs/Glossary/Bounces.html)
-* [Classroom > List Scrubbing Guide](https://sendgrid.com/docs/Classroom/Deliver/list_scrubbing.html)
-
-Note: the `delete_all` and `emails` parameters should be used independently of each other as they have different purposes.
-
-### DELETE /suppression/bounces
-
-
-```php
-$request_body = json_decode('{
-  "delete_all": true,
-  "emails": [
-    "example@example.com",
-    "example2@example.com"
-  ]
-}');
-$response = $sg->client->suppression()->bounces()->delete($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a Bounce
-
-**This endpoint allows you to retrieve a specific bounce for a given email address.**
-
-Bounces are messages that are returned to the server that sent it.
-
-For more information see:
-
-* [User Guide > Bounces](https://sendgrid.com/docs/User_Guide/Suppressions/bounces.html) for more information
-* [Glossary > Bounces](https://sendgrid.com/docs/Glossary/Bounces.html)
-* [Classroom > List Scrubbing Guide](https://sendgrid.com/docs/Classroom/Deliver/list_scrubbing.html)
-
-### GET /suppression/bounces/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->suppression()->bounces()->_($email)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a bounce
-
-**This endpoint allows you to remove an email address from your bounce list.**
-
-Bounces are messages that are returned to the server that sent it. This endpoint allows you to delete a single email addresses from your bounce list.
-
-For more information see:
-
-* [User Guide > Bounces](https://sendgrid.com/docs/User_Guide/Suppressions/bounces.html) for more information
-* [Glossary > Bounces](https://sendgrid.com/docs/Glossary/Bounces.html)
-* [Classroom > List Scrubbing Guide](https://sendgrid.com/docs/Classroom/Deliver/list_scrubbing.html)
-
-### DELETE /suppression/bounces/{email}
-
-
-```php
-$query_params = json_decode('{"email_address": "example@example.com"}');
-$email = "test_url_param";
-$response = $sg->client->suppression()->bounces()->_($email)->delete(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all invalid emails
-
-**This endpoint allows you to retrieve a list of all invalid email addresses.**
-
-An invalid email occurs when you attempt to send email to an address that is formatted in a manner that does not meet internet email format standards or the email does not exist at the recipients mail server.
-
-Examples include addresses without the @ sign or addresses that include certain special characters and/or spaces. This response can come from our own server or the recipient mail server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/invalid_emails.html).
-
-### GET /suppression/invalid_emails
-
-
-```php
-$query_params = json_decode('{"start_time": 1, "limit": 1, "end_time": 1, "offset": 1}');
-$response = $sg->client->suppression()->invalid_emails()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete invalid emails
-
-**This endpoint allows you to remove email addresses from your invalid email address list.**
-
-There are two options for deleting invalid email addresses:
-
-1) You can delete all invalid email addresses by setting `delete_all` to true in the request body.
-2) You can delete some invalid email addresses by specifying certain addresses in an array in the request body.
-
-An invalid email occurs when you attempt to send email to an address that is formatted in a manner that does not meet internet email format standards or the email does not exist at the recipients mail server.
-
-Examples include addresses without the @ sign or addresses that include certain special characters and/or spaces. This response can come from our own server or the recipient mail server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/invalid_emails.html).
-
-### DELETE /suppression/invalid_emails
-
-
-```php
-$request_body = json_decode('{
-  "delete_all": false,
-  "emails": [
-    "example1@example.com",
-    "example2@example.com"
-  ]
-}');
-$response = $sg->client->suppression()->invalid_emails()->delete($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a specific invalid email
-
-**This endpoint allows you to retrieve a specific invalid email addresses.**
-
-An invalid email occurs when you attempt to send email to an address that is formatted in a manner that does not meet internet email format standards or the email does not exist at the recipients mail server.
-
-Examples include addresses without the @ sign or addresses that include certain special characters and/or spaces. This response can come from our own server or the recipient mail server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/invalid_emails.html).
-
-### GET /suppression/invalid_emails/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->suppression()->invalid_emails()->_($email)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a specific invalid email
-
-**This endpoint allows you to remove a specific email address from the invalid email address list.**
-
-An invalid email occurs when you attempt to send email to an address that is formatted in a manner that does not meet internet email format standards or the email does not exist at the recipients mail server.
-
-Examples include addresses without the @ sign or addresses that include certain special characters and/or spaces. This response can come from our own server or the recipient mail server.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/invalid_emails.html).
-
-### DELETE /suppression/invalid_emails/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->suppression()->invalid_emails()->_($email)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a specific spam report
-
-**This endpoint allows you to retrieve a specific spam report.**
-
-[Spam reports](https://sendgrid.com/docs/Glossary/spam_reports.html) happen when a recipient indicates that they think your email is [spam](https://sendgrid.com/docs/Glossary/spam.html) and then their email provider reports this to Twilio SendGrid.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/spam_reports.html).
-
-### GET /suppression/spam_report/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->suppression()->spam_reports()->_($email)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a specific spam report
-
-**This endpoint allows you to delete a specific spam report.**
-
-[Spam reports](https://sendgrid.com/docs/Glossary/spam_reports.html) happen when a recipient indicates that they think your email is [spam](https://sendgrid.com/docs/Glossary/spam.html) and then their email provider reports this to Twilio SendGrid.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/spam_reports.html).
-
-### DELETE /suppression/spam_report/{email}
-
-
-```php
-$email = "test_url_param";
-$response = $sg->client->suppression()->spam_reports()->_($email)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all spam reports
-
-**This endpoint allows you to retrieve all spam reports.**
-
-[Spam reports](https://sendgrid.com/docs/Glossary/spam_reports.html) happen when a recipient indicates that they think your email is [spam](https://sendgrid.com/docs/Glossary/spam.html) and then their email provider reports this to Twilio SendGrid.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/spam_reports.html).
-
-### GET /suppression/spam_reports
-
-
-```php
-$query_params = json_decode('{"start_time": 1, "limit": 1, "end_time": 1, "offset": 1}');
-$response = $sg->client->suppression()->spam_reports()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete spam reports
-
-**This endpoint allows you to delete your spam reports.**
-
-There are two options for deleting spam reports:
-
-1) You can delete all spam reports by setting "delete_all" to true in the request body.
-2) You can delete some spam reports by specifying the email addresses in an array in the request body.
-
-[Spam reports](https://sendgrid.com/docs/Glossary/spam_reports.html) happen when a recipient indicates that they think your email is [spam](https://sendgrid.com/docs/Glossary/spam.html) and then their email provider reports this to Twilio SendGrid.
-
-For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/spam_reports.html).
-
-### DELETE /suppression/spam_reports
-
-
-```php
-$request_body = json_decode('{
-  "delete_all": false,
-  "emails": [
-    "example1@example.com",
-    "example2@example.com"
-  ]
-}');
-$response = $sg->client->suppression()->spam_reports()->delete($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all global suppressions
-
-**This endpoint allows you to retrieve a list of all email address that are globally suppressed.**
-
-A global suppression (or global unsubscribe) is an email address of a recipient who does not want to receive any of your messages. A globally suppressed recipient will be removed from any email you send. For more information, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Suppressions/global_unsubscribes.html).
-
-### GET /suppression/unsubscribes
-
-
-```php
-$query_params = json_decode('{"start_time": 1, "limit": 1, "end_time": 1, "offset": 1}');
-$response = $sg->client->suppression()->unsubscribes()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="templates"></a>
-# TEMPLATES
-
-## Create a transactional template.
-
-**This endpoint allows you to create a transactional template.**
-
-Each user can create up to 300 different transactional templates. Transactional templates are specific to accounts and subusers. Templates created on a parent account will not be accessible from the subuser accounts.
-
-Transactional templates are templates created specifically for transactional email and are not to be confused with [Marketing Campaigns templates](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/templates.html). For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-### POST /templates
-
-
-```php
-$request_body = json_decode('{
-  "name": "example_name"
-}');
-$response = $sg->client->templates()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all transactional templates.
-
-**This endpoint allows you to retrieve all transactional templates.**
-
-Each user can create up to 300 different transactional templates. Transactional templates are specific to accounts and subusers. Templates created on a parent account will not be accessible from the subuser accounts.
-
-Transactional templates are templates created specifically for transactional email and are not to be confused with [Marketing Campaigns templates](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/templates.html). For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-### GET /templates
-
-
-```php
-$response = $sg->client->templates()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Edit a transactional template.
-
-**This endpoint allows you to edit a transactional template.**
-
-Each user can create up to 300 different transactional templates. Transactional templates are specific to accounts and subusers. Templates created on a parent account will not be accessible from the subuser accounts.
-
-Transactional templates are templates created specifically for transactional email and are not to be confused with [Marketing Campaigns templates](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/templates.html). For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-
-### PATCH /templates/{template_id}
-
-
-```php
-$request_body = json_decode('{
-  "name": "new_example_name"
-}');
-$template_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a single transactional template.
-
-**This endpoint allows you to retrieve a single transactional template.**
-
-Each user can create up to 300 different transactional templates. Transactional templates are specific to accounts and subusers. Templates created on a parent account will not be accessible from the subuser accounts.
-
-Transactional templates are templates created specifically for transactional email and are not to be confused with [Marketing Campaigns templates](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/templates.html). For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-
-### GET /templates/{template_id}
-
-
-```php
-$template_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a template.
-
-**This endpoint allows you to delete a transactional template.**
-
-Each user can create up to 300 different transactional templates. Transactional templates are specific to accounts and subusers. Templates created on a parent account will not be accessible from the subuser accounts.
-
-Transactional templates are templates created specifically for transactional email and are not to be confused with [Marketing Campaigns templates](https://sendgrid.com/docs/User_Guide/Marketing_Campaigns/templates.html). For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-
-### DELETE /templates/{template_id}
-
-
-```php
-$template_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create a new transactional template version.
-
-**This endpoint allows you to create a new version of a template.**
-
-Each transactional template can have multiple versions, each version with its own subject and content. Each user can have up to 300 versions across all templates.
-
-For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-
-### POST /templates/{template_id}/versions
-
-
-```php
-$request_body = json_decode('{
-  "active": 1,
-  "html_content": "<%body%>",
-  "name": "example_version_name",
-  "plain_content": "<%body%>",
-  "subject": "<%subject%>",
-  "template_id": "ddb96bbc-9b92-425e-8979-99464621b543"
-}');
-$template_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->versions()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Edit a transactional template version.
-
-**This endpoint allows you to edit a version of one of your transactional templates.**
-
-Each transactional template can have multiple versions, each version with its own subject and content. Each user can have up to 300 versions across all templates.
-
-For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-## URI Parameters
-| URI Parameter | Type | Description |
-|---|---|---|
-| template_id | string | The ID of the original template |
-| version_id | string | The ID of the template version |
-
-### PATCH /templates/{template_id}/versions/{version_id}
-
-
-```php
-$request_body = json_decode('{
-  "active": 1,
-  "html_content": "<%body%>",
-  "name": "updated_example_name",
-  "plain_content": "<%body%>",
-  "subject": "<%subject%>"
-}');
-$template_id = "test_url_param";
-$version_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->versions()->_($version_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a specific transactional template version.
-
-**This endpoint allows you to retrieve a specific version of a template.**
-
-Each transactional template can have multiple versions, each version with its own subject and content. Each user can have up to 300 versions across all templates.
-
-For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-## URI Parameters
-| URI Parameter | Type | Description |
-|---|---|---|
-| template_id | string | The ID of the original template |
-| version_id | string |  The ID of the template version |
-
-### GET /templates/{template_id}/versions/{version_id}
-
-
-```php
-$template_id = "test_url_param";
-$version_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->versions()->_($version_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a transactional template version.
-
-**This endpoint allows you to delete one of your transactional template versions.**
-
-Each transactional template can have multiple versions, each version with its own subject and content. Each user can have up to 300 versions across all templates.
-
-For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-## URI Parameters
-| URI Parameter | Type | Description |
-|---|---|---|
-| template_id | string | The ID of the original template |
-| version_id | string | The ID of the template version |
-
-### DELETE /templates/{template_id}/versions/{version_id}
-
-
-```php
-$template_id = "test_url_param";
-$version_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->versions()->_($version_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Activate a transactional template version.
-
-**This endpoint allows you to activate a version of one of your templates.**
-
-Each transactional template can have multiple versions, each version with its own subject and content. Each user can have up to 300 versions across all templates.
-
-
-For more information about transactional templates, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html).
-
-## URI Parameters
-| URI Parameter | Type | Description |
-|---|---|---|
-| template_id | string | The ID of the original template |
-| version_id | string |  The ID of the template version |
-
-### POST /templates/{template_id}/versions/{version_id}/activate
-
-
-```php
-$template_id = "test_url_param";
-$version_id = "test_url_param";
-$response = $sg->client->templates()->_($template_id)->versions()->_($version_id)->activate()->post();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="tracking-settings"></a>
-# TRACKING SETTINGS
-
-## Retrieve Tracking Settings
-
-**This endpoint allows you to retrieve a list of all tracking settings that you can enable on your account.**
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### GET /tracking_settings
-
-
-```php
-$query_params = json_decode('{"limit": 1, "offset": 1}');
-$response = $sg->client->tracking_settings()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Click Tracking Settings
-
-**This endpoint allows you to change your current click tracking setting. You can enable, or disable, click tracking using this endpoint.**
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### PATCH /tracking_settings/click
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true
-}');
-$response = $sg->client->tracking_settings()->click()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve Click Track Settings
-
-**This endpoint allows you to retrieve your current click tracking setting.**
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### GET /tracking_settings/click
-
-
-```php
-$response = $sg->client->tracking_settings()->click()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Google Analytics Settings
-
-**This endpoint allows you to update your current setting for Google Analytics.**
-
-For more information about using Google Analytics, please refer to [Googles URL Builder](https://support.google.com/analytics/answer/1033867?hl=en) and their article on ["Best Practices for Campaign Building"](https://support.google.com/analytics/answer/1037445).
-
-We default the settings to Googles recommendations. For more information, see [Google Analytics Demystified](https://sendgrid.com/docs/Classroom/Track/Collecting_Data/google_analytics_demystified_ga_statistics_vs_sg_statistics.html).
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### PATCH /tracking_settings/google_analytics
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true,
-  "utm_campaign": "website",
-  "utm_content": "",
-  "utm_medium": "email",
-  "utm_source": "sendgrid.com",
-  "utm_term": ""
-}');
-$response = $sg->client->tracking_settings()->google_analytics()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve Google Analytics Settings
-
-**This endpoint allows you to retrieve your current setting for Google Analytics.**
-
-For more information about using Google Analytics, please refer to [Googles URL Builder](https://support.google.com/analytics/answer/1033867?hl=en) and their article on ["Best Practices for Campaign Building"](https://support.google.com/analytics/answer/1037445).
-
-We default the settings to Googles recommendations. For more information, see [Google Analytics Demystified](https://sendgrid.com/docs/Classroom/Track/Collecting_Data/google_analytics_demystified_ga_statistics_vs_sg_statistics.html).
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### GET /tracking_settings/google_analytics
-
-
-```php
-$response = $sg->client->tracking_settings()->google_analytics()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Open Tracking Settings
-
-**This endpoint allows you to update your current settings for open tracking.**
-
-Open Tracking adds an invisible image at the end of the email which can track email opens. If the email recipient has images enabled on their email client, a request to Twilio SendGrid's server for the invisible image is executed and an open event is logged. These events are logged in the Statistics portal, Email Activity interface, and are reported by the Event Webhook.
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### PATCH /tracking_settings/open
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true
-}');
-$response = $sg->client->tracking_settings()->open()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Get Open Tracking Settings
-
-**This endpoint allows you to retrieve your current settings for open tracking.**
-
-Open Tracking adds an invisible image at the end of the email which can track email opens. If the email recipient has images enabled on their email client, a request to Twilio SendGrid's server for the invisible image is executed and an open event is logged. These events are logged in the Statistics portal, Email Activity interface, and are reported by the Event Webhook.
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### GET /tracking_settings/open
-
-
-```php
-$response = $sg->client->tracking_settings()->open()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Subscription Tracking Settings
-
-**This endpoint allows you to update your current settings for subscription tracking.**
-
-Subscription tracking adds links to the bottom of your emails that allows your recipients to subscribe to, or unsubscribe from, your emails.
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### PATCH /tracking_settings/subscription
-
-
-```php
-$request_body = json_decode('{
-  "enabled": true,
-  "html_content": "html content",
-  "landing": "landing page html",
-  "plain_content": "text content",
-  "replace": "replacement tag",
-  "url": "url"
-}');
-$response = $sg->client->tracking_settings()->subscription()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve Subscription Tracking Settings
-
-**This endpoint allows you to retrieve your current settings for subscription tracking.**
-
-Subscription tracking adds links to the bottom of your emails that allows your recipients to subscribe to, or unsubscribe from, your emails.
-
-You can track a variety of the actions your recipients may take when interacting with your emails including opening your emails, clicking on links in your emails, and subscribing to (or unsubscribing from) your emails.
-
-For more information about tracking, please see our [User Guide](https://sendgrid.com/docs/User_Guide/Settings/tracking.html).
-
-### GET /tracking_settings/subscription
-
-
-```php
-$response = $sg->client->tracking_settings()->subscription()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-<a name="user"></a>
-# USER
-
-## Get a user's account information.
-
-**This endpoint allows you to retrieve your user account details.**
-
-Your user's account information includes the user's account type and reputation.
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-### GET /user/account
-
-
-```php
-$response = $sg->client->user()->account()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve your credit balance
-
-**This endpoint allows you to retrieve the current credit balance for your account.**
-
-Your monthly credit allotment limits the number of emails you may send before incurring overage charges. For more information about credits and billing, please visit our [Classroom](https://sendgrid.com/docs/Classroom/Basics/Billing/billing_info_and_faqs.html).
-
-### GET /user/credits
-
-
-```php
-$response = $sg->client->user()->credits()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update your account email address
-
-**This endpoint allows you to update the email address currently on file for your account.**
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-### PUT /user/email
-
-
-```php
-$request_body = json_decode('{
-  "email": "example@example.com"
-}');
-$response = $sg->client->user()->email()->put($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve your account email address
-
-**This endpoint allows you to retrieve the email address currently on file for your account.**
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-### GET /user/email
-
-
-```php
-$response = $sg->client->user()->email()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update your password
-
-**This endpoint allows you to update your password.**
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-### PUT /user/password
-
-
-```php
-$request_body = json_decode('{
-  "new_password": "new_password",
-  "old_password": "old_password"
-}');
-$response = $sg->client->user()->password()->put($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a user's profile
-
-**This endpoint allows you to update your current profile details.**
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-It should be noted that any one or more of the parameters can be updated via the PATCH /user/profile endpoint. The only requirement is that you include at least one when you PATCH.
-
-### PATCH /user/profile
-
-
-```php
-$request_body = json_decode('{
-  "city": "Orange",
-  "first_name": "Example",
-  "last_name": "User"
-}');
-$response = $sg->client->user()->profile()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Get a user's profile
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-### GET /user/profile
-
-
-```php
-$response = $sg->client->user()->profile()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Cancel or pause a scheduled send
-
-**This endpoint allows you to cancel or pause an email that has been scheduled to be sent.**
-
-If the maximum number of cancellations/pauses are added, HTTP 400 will
-be returned.
-
-The Cancel Scheduled Sends feature allows the customer to cancel a scheduled send based on a Batch ID included in the SMTPAPI header.Scheduled sends cancelled less than 10 minutes before the scheduled time are not guaranteed to be cancelled.
-
-### POST /user/scheduled_sends
-
-
-```php
-$request_body = json_decode('{
-  "batch_id": "YOUR_BATCH_ID",
-  "status": "pause"
-}');
-$response = $sg->client->user()->scheduled_sends()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all scheduled sends
-
-**This endpoint allows you to retrieve all cancel/paused scheduled send information.**
-
-The Cancel Scheduled Sends feature allows the customer to cancel a scheduled send based on a Batch ID included in the SMTPAPI header.Scheduled sends cancelled less than 10 minutes before the scheduled time are not guaranteed to be cancelled.
-
-### GET /user/scheduled_sends
-
-
-```php
-$response = $sg->client->user()->scheduled_sends()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update user scheduled send information
-
-**This endpoint allows you to update the status of a scheduled send for the given `batch_id`.**
-
-The Cancel Scheduled Sends feature allows the customer to cancel a scheduled send based on a Batch ID included in the SMTPAPI header.Scheduled sends cancelled less than 10 minutes before the scheduled time are not guaranteed to be cancelled.
-
-### PATCH /user/scheduled_sends/{batch_id}
-
-
-```php
-$request_body = json_decode('{
-  "status": "pause"
-}');
-$batch_id = "test_url_param";
-$response = $sg->client->user()->scheduled_sends()->_($batch_id)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve scheduled send
-
-**This endpoint allows you to retrieve the cancel/paused scheduled send information for a specific `batch_id`.**
-
-The Cancel Scheduled Sends feature allows the customer to cancel a scheduled send based on a Batch ID included in the SMTPAPI header.Scheduled sends cancelled less than 10 minutes before the scheduled time are not guaranteed to be cancelled.
-
-### GET /user/scheduled_sends/{batch_id}
-
-
-```php
-$batch_id = "test_url_param";
-$response = $sg->client->user()->scheduled_sends()->_($batch_id)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a cancellation or pause of a scheduled send
-
-**This endpoint allows you to delete the cancellation/pause of a scheduled send.**
-
-The Cancel Scheduled Sends feature allows the customer to cancel a scheduled send based on a Batch ID included in the SMTPAPI header.Scheduled sends cancelled less than 10 minutes before the scheduled time are not guaranteed to be cancelled.
-
-### DELETE /user/scheduled_sends/{batch_id}
-
-
-```php
-$batch_id = "test_url_param";
-$response = $sg->client->user()->scheduled_sends()->_($batch_id)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Enforced TLS settings
-
-**This endpoint allows you to update your current Enforced TLS settings.**
-
-The Enforced TLS settings specify whether or not the recipient is required to support TLS or have a valid certificate. See the [SMTP Ports User Guide](https://sendgrid.com/docs/Classroom/Basics/Email_Infrastructure/smtp_ports.html) for more information on opportunistic TLS.
-
-**Note:** If either setting is enabled and the recipient does not support TLS or have a valid certificate, we drop the message and send a block event with TLS required but not supported as the description.
-
-### PATCH /user/settings/enforced_tls
-
-
-```php
-$request_body = json_decode('{
-  "require_tls": true,
-  "require_valid_cert": false
-}');
-$response = $sg->client->user()->settings()->enforced_tls()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve current Enforced TLS settings.
-
-**This endpoint allows you to retrieve your current Enforced TLS settings.**
-
-The Enforced TLS settings specify whether or not the recipient is required to support TLS or have a valid certificate. See the [SMTP Ports User Guide](https://sendgrid.com/docs/Classroom/Basics/Email_Infrastructure/smtp_ports.html) for more information on opportunistic TLS.
-
-**Note:** If either setting is enabled and the recipient does not support TLS or have a valid certificate, we drop the message and send a block event with TLS required but not supported as the description.
-
-### GET /user/settings/enforced_tls
-
-
-```php
-$response = $sg->client->user()->settings()->enforced_tls()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update your username
-
-**This endpoint allows you to update the username for your account.**
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-### PUT /user/username
-
-
-```php
-$request_body = json_decode('{
-  "username": "test_username"
-}');
-$response = $sg->client->user()->username()->put($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve your username
-
-**This endpoint allows you to retrieve your current account username.**
-
-Keeping your user profile up to date is important. This will help Twilio SendGrid to verify who you are as well as contact you should we need to.
-
-For more information about your user profile:
-
-* [Twilio SendGrid Account Settings](https://sendgrid.com/docs/User_Guide/Settings/account.html)
-
-### GET /user/username
-
-
-```php
-$response = $sg->client->user()->username()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update Event Notification Settings
-
-**This endpoint allows you to update your current event webhook settings.**
-
-If an event type is marked as `true`, then the event webhook will include information about that event.
-
-Twilio SendGrid's Event Webhook will notify a URL of your choice via HTTP POST with information about events that occur as Twilio SendGrid processes your email.
-
-Common uses of this data are to remove unsubscribes, react to spam reports, determine unengaged recipients, identify bounced email addresses, or create advanced analytics of your email program.
-
-### PATCH /user/webhooks/event/settings
-
-
-```php
-$request_body = json_decode('{
-  "bounce": true,
-  "click": true,
-  "deferred": true,
-  "delivered": true,
-  "dropped": true,
-  "enabled": true,
-  "group_resubscribe": true,
-  "group_unsubscribe": true,
-  "open": true,
-  "processed": true,
-  "spam_report": true,
-  "unsubscribe": true,
-  "url": "url"
-}');
-$response = $sg->client->user()->webhooks()->event()->settings()->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve Event Webhook settings
-
-**This endpoint allows you to retrieve your current event webhook settings.**
-
-If an event type is marked as `true`, then the event webhook will include information about that event.
-
-Twilio SendGrid's Event Webhook will notify a URL of your choice via HTTP POST with information about events that occur as Twilio SendGrid processes your email.
-
-Common uses of this data are to remove unsubscribes, react to spam reports, determine unengaged recipients, identify bounced email addresses, or create advanced analytics of your email program.
-
-### GET /user/webhooks/event/settings
-
-
-```php
-$response = $sg->client->user()->webhooks()->event()->settings()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Test Event Notification Settings
-
-**This endpoint allows you to test your event webhook by sending a fake event notification post to the provided URL.**
-
-Twilio SendGrid's Event Webhook will notify a URL of your choice via HTTP POST with information about events that occur as Twilio SendGrid processes your email.
-
-Common uses of this data are to remove unsubscribes, react to spam reports, determine unengaged recipients, identify bounced email addresses, or create advanced analytics of your email program.
-
-### POST /user/webhooks/event/test
-
-
-```php
-$request_body = json_decode('{
-  "url": "url"
-}');
-$response = $sg->client->user()->webhooks()->event()->test()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Create a parse setting
-
-**This endpoint allows you to create a new inbound parse setting.**
-
-The inbound parse webhook allows you to have incoming emails parsed, extracting some or all of the content, and then have that content POSTed by Twilio SendGrid to a URL of your choosing. For more information, please see our [User Guide](https://sendgrid.com/docs/API_Reference/Webhooks/parse.html).
-
-### POST /user/webhooks/parse/settings
-
-
-```php
-$request_body = json_decode('{
-  "hostname": "myhostname.com",
-  "send_raw": false,
-  "spam_check": true,
-  "url": "http://email.myhosthame.com"
-}');
-$response = $sg->client->user()->webhooks()->parse()->settings()->post($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve all parse settings
-
-**This endpoint allows you to retrieve all of your current inbound parse settings.**
-
-The inbound parse webhook allows you to have incoming emails parsed, extracting some or all of the content, and then have that content POSTed by Twilio SendGrid to a URL of your choosing. For more information, please see our [User Guide](https://sendgrid.com/docs/API_Reference/Webhooks/parse.html).
-
-### GET /user/webhooks/parse/settings
-
-
-```php
-$response = $sg->client->user()->webhooks()->parse()->settings()->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Update a parse setting
-
-**This endpoint allows you to update a specific inbound parse setting.**
-
-The inbound parse webhook allows you to have incoming emails parsed, extracting some or all of the content, and then have that content POSTed by Twilio SendGrid to a URL of your choosing. For more information, please see our [User Guide](https://sendgrid.com/docs/API_Reference/Webhooks/parse.html).
-
-### PATCH /user/webhooks/parse/settings/{hostname}
-
-
-```php
-$request_body = json_decode('{
-  "send_raw": true,
-  "spam_check": false,
-  "url": "http://newdomain.com/parse"
-}');
-$hostname = "test_url_param";
-$response = $sg->client->user()->webhooks()->parse()->settings()->_($hostname)->patch($request_body);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieve a specific parse setting
-
-**This endpoint allows you to retrieve a specific inbound parse setting.**
-
-The inbound parse webhook allows you to have incoming emails parsed, extracting some or all of the content, and then have that content POSTed by Twilio SendGrid to a URL of your choosing. For more information, please see our [User Guide](https://sendgrid.com/docs/API_Reference/Webhooks/parse.html).
-
-### GET /user/webhooks/parse/settings/{hostname}
-
-
-```php
-$hostname = "test_url_param";
-$response = $sg->client->user()->webhooks()->parse()->settings()->_($hostname)->get();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Delete a parse setting
-
-**This endpoint allows you to delete a specific inbound parse setting.**
-
-The inbound parse webhook allows you to have incoming emails parsed, extracting some or all of the content, and then have that content POSTed by Twilio SendGrid to a URL of your choosing. For more information, please see our [User Guide](https://sendgrid.com/docs/API_Reference/Webhooks/parse.html).
-
-### DELETE /user/webhooks/parse/settings/{hostname}
-
-
-```php
-$hostname = "test_url_param";
-$response = $sg->client->user()->webhooks()->parse()->settings()->_($hostname)->delete();
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
-## Retrieves Inbound Parse Webhook statistics.
-
-**This endpoint allows you to retrieve the statistics for your Parse Webhook usage.**
-
-Twilio SendGrid's Inbound Parse Webhook allows you to parse the contents and attachments of incoming emails. The Parse API can then POST the parsed emails to a URL that you specify. The Inbound Parse Webhook cannot parse messages greater than 20MB in size, including all attachments.
-
-There are a number of pre-made integrations for the Twilio SendGrid Parse Webhook which make processing events easy. You can find these integrations in the [Library Index](https://sendgrid.com/docs/Integrate/libraries.html#-Webhook-Libraries).
-
-### GET /user/webhooks/parse/stats
-
-
-```php
-$query_params = json_decode('{"aggregated_by": "day", "limit": "test_string", "start_date": "2016-01-01", "end_date": "2016-04-01", "offset": "test_string"}');
-$response = $sg->client->user()->webhooks()->parse()->stats()->get(null, $query_params);
-print $response->statusCode() . "\n";
-print $response->body() . "\n";
-print_r($response->headers());
-```
diff --git a/libs/sendgrid/USE_CASES.md b/libs/sendgrid/USE_CASES.md
deleted file mode 100644
index c7b303f..0000000
--- a/libs/sendgrid/USE_CASES.md
+++ /dev/null
@@ -1,1416 +0,0 @@
-This documentation provides examples for specific use cases. Please [open an issue](https://github.com/sendgrid/sendgrid-php/issues) or make a pull request for any use cases you would like us to document here. Thank you!
-
-# Table of Contents
-- [Table of Contents](#table-of-contents)
-- [Attachments](#attachments)
-- [Attaching a File from Box](#attaching-a-file-from-box)
-- [Kitchen Sink - an example with all settings used](#kitchen-sink)
-- [Send an Email to a Single Recipient](#send-an-email-to-a-single-recipient)
-- [Send an Email to Multiple Recipients](#send-an-email-to-multiple-recipients)
-- [Send Multiple Emails to Multiple Recipients](#send-multiple-emails-to-multiple-recipients)
-- [Transactional Templates](#transactional-templates)
-- [Legacy Templates](#legacy-templates)
-- [Send an Email With Twilio Email (Pilot)](#send-an-email-with-twilio-email-pilot)
-- [Send an SMS Message](#send-an-sms-message)
-- [How to Set up a Domain Authentication](#how-to-set-up-a-domain-authentication)
-- [How to View Email Statistics](#how-to-view-email-statistics)
-- [Deploying to Heroku](#deploying-to-heroku)
-- [Google App Engine Installation](#google-app-engine-installation)
-
-<a name="attachments"></a>
-# Attachments
-
-Here is an example of attaching a text file to your email, assuming that text file `my_file.txt` is located in the same directory. You can use the `addAttachments` method to add an array attachments.
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$email = new \SendGrid\Mail\Mail();
-$email->setFrom("test@example.com", "Example User");
-$email->setSubject("Sending with Twilio SendGrid is Fun");
-$email->addTo("test@example.com", "Example User");
-$email->addContent("text/plain", "and easy to do anywhere, even with PHP");
-$email->addContent(
-    "text/html", "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-
-$file_encoded = base64_encode(file_get_contents('my_file.txt'));
-$email->addAttachment(
-    $file_encoded,
-    "application/text",
-    "my_file.txt",
-    "attachment"
-);
-
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-<a name="box-attachment-example"></a>
-# Attaching a File from Box
-
-You can attach a file from [Box](https://www.box.com) to your emails. 
-Because there is no official Box SDK for PHP, this example requires 
-[firebase/php-jwt](https://github.com/firebase/php-jwt) to generate a 
-[JSON Web Token](https://jwt.io) assertion. Before using this code, you should 
-set up a JWT application on [Box](https://developer.box.com/docs/setting-up-a-jwt-app). 
-For more information about authenticating with JWT, see 
-[this page](https://developer.box.com/docs/construct-jwt-claim-manually).
-
-After completing the setup tutorial, you will want to make sure your app’s 
-configuration settings have at least the following options enabled:
-
-**Application Access**
-* Enterprise
-
-**Application Scopes**
-* Read all files and folders stored in Box
-* Read and write all files and folders stored in Box
-* Manage users
-
-**Advanced Features**
-* Perform Actions as Users
-
-Remember to reauthorize your app 
-[here](https://app.box.com/master/settings/openbox) after making any changes to 
-your app’s JWT scopes.
-
-```php
-<?php
-
-// This example assumes you're using Composer for both
-// the sendgrid-php library and php-jwt.
-
-require 'vendor/autoload.php';
-
-use \Firebase\JWT\JWT;
-
-$fileOwner = 'email@example.com'; // Replace with the email you use to sign in to Box
-$filePath = '/path/to/file.txt'; // Replace with the path on Box to the file you will attach
-$boxConfig = json_decode(file_get_contents('/path/to/boxConfig.json')); // Replace with the path to your Box config file. Keep it in a secure location!
-
-$path = explode('/', $filePath);
-if (!empty($path[0])){
-    array_unshift($path, ''); // Adds a blank element to beginning of array in case $filePath does not have a preceding forward slash.
-}
-
-$header = array(
-    'alg' => 'RS256',
-    'typ' => 'JWT',
-    'kid' => $boxConfig->boxAppSettings->appAuth->publicKeyID
-);
-$claims = array(
-    'iss' => $boxConfig->boxAppSettings->clientID,
-    'sub' => $boxConfig->enterpriseID,
-    'box_sub_type' => 'enterprise',
-    'aud' => 'https://api.box.com/oauth2/token',
-    'jti' => bin2hex(openssl_random_pseudo_bytes(16)),
-    'exp' => time() + 50
-);
-
-$privateKey = openssl_get_privatekey($boxConfig->boxAppSettings->appAuth->privateKey, $boxConfig->boxAppSettings->appAuth->passphrase);
-
-$assertion = JWT::encode($claims, $privateKey, 'RS256', null, $header);
-
-// Get access token
-$url = 'https://api.box.com/oauth2/token';
-$data = array(
-    'grant_type' => 'urn:ietf:params:oauth:grant-type:jwt-bearer',
-    'client_id' => $boxConfig->boxAppSettings->clientID,
-    'client_secret' => $boxConfig->boxAppSettings->clientSecret,
-    'assertion' => $assertion
-);
-$ch = curl_init($url);
-curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
-$result = json_decode(curl_exec($ch));
-curl_close($ch);
-$accessToken = $result->access_token;
-
-// Get user ID
-$url = 'https://api.box.com/2.0/users';
-$ch = curl_init($url);
-curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-curl_setopt($ch, CURLOPT_HTTPHEADER, array(
-    'Authorization: Bearer '.$accessToken
-));
-$result = json_decode(curl_exec($ch));
-curl_close($ch);
-foreach ($result->entries as $entry){
-    if ($entry->login === $fileOwner){
-        $userId = $entry->id;
-    }
-}
-
-// Get file ID
-$url = 'https://api.box.com/2.0/search';
-$data = array(
-    'query' => urlencode(end($path))
-);
-$urlEncoded = http_build_query($data);
-$ch = curl_init($url.'?'.$urlEncoded);
-curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-curl_setopt($ch, CURLOPT_HTTPHEADER, array(
-    'Authorization: Bearer '.$accessToken,
-    'As-User: '.$userId
-));
-$result = json_decode(curl_exec($ch));
-curl_close($ch);
-foreach ($result->entries as $entry){
-    if (count($entry->path_collection->entries) === count($path) -1){
-        if (count($path) > 2){
-            // File is located in a subdirectory.
-            for ($i = 1; $i < (count($path) - 1); $i++){
-                if ($path[$i] === $entry->path_collection->entries[$i]->name){
-                    $fileId = $entry->id;
-                }
-            }
-        } else {
-            // File is located in default directory.
-            $fileId = $entry->id;
-        }
-    }
-}
-
-if (isset($fileId) && isset($userId)){
-    // Get file data
-    $url = 'https://api.box.com/2.0/files/'.$fileId.'/content';
-    $ch = curl_init($url);
-    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
-    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
-        'Authorization: Bearer '.$accessToken,
-        'As-User: '.$userId
-    ));
-    $result = curl_exec($ch);
-    $contentType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
-    curl_close($ch);
-    
-    $attachmentFilename = end($path);
-    $attachmentContent = base64_encode($result);
-    $attachmentContentType = $contentType;
-    
-    $email = new \SendGrid\Mail\Mail(); 
-    $email->setFrom("test@example.com", "Example User");
-    $email->setSubject("Attaching a File from Box");
-    $email->addTo("test@example.com", "Example User");
-    $email->addContent("text/plain", "See attached file from Box.");
-    $email->addContent(
-        "text/html", "<strong>See attached file from Box.</strong>"
-    );
-    
-    $attachment = new \SendGrid\Mail\Attachment();
-    $attachment->setContent($attachmentContent);
-    $attachment->setType($attachmentContentType);
-    $attachment->setFilename($attachmentFilename);
-    $attachment->setDisposition("attachment");
-    $attachment->setContentId($attachmentFilename); // Only used if disposition is set to inline
-    $email->addAttachment($attachment);
-
-    $sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-    try {
-        $response = $sendgrid->send($email);
-        print $response->statusCode() . "\n";
-        print_r($response->headers());
-        print $response->body() . "\n";
-    } catch (Exception $e) {
-        echo 'Caught exception: '. $e->getMessage() ."\n";
-    }
-} else {
-    echo "Error: file or owner could not be located\n";
-}
-```
-
-<a name="kitchen-sink"></a>
-# Kitchen Sink -  an example with all settings used
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$email = new \SendGrid\Mail\Mail();
-
-// For a detailed description of each of these settings, 
-// please see the 
-// [documentation](https://sendgrid.com/docs/API_Reference/api_v3.html).
-$email->setSubject("Sending with Twilio SendGrid is Fun 2");
-
-$email->addTo("test@example.com", "Example User");
-$email->addTo("test+1@example.com", "Example User1");
-$toEmails = [
-    "test+2@example.com" => "Example User2",
-    "test+3@example.com" => "Example User3"
-];
-$email->addTos($toEmails);
-
-$email->addCc("test+4@example.com", "Example User4");
-$ccEmails = [
-    "test+5@example.com" => "Example User5",
-    "test+6@example.com" => "Example User6"
-];
-$email->addCcs($ccEmails);
-
-$email->addBcc("test+7@example.com", "Example User7");
-$bccEmails = [
-    "test+8@example.com" => "Example User8",
-    "test+9@example.com" => "Example User9"
-];
-$email->addBccs($bccEmails);
-
-$email->addHeader("X-Test1", "Test1");
-$email->addHeader("X-Test2", "Test2");
-$headers = [
-    "X-Test3" => "Test3",
-    "X-Test4" => "Test4",
-];
-$email->addHeaders($headers);
-
-$email->addDynamicTemplateData("subject1", "Example Subject 1");
-$email->addDynamicTemplateData("name1", "Example Name 1");
-$email->addDynamicTemplateData("city1", "Denver");
-$substitutions = [
-    "subject2" => "Example Subject 2",
-    "name2" => "Example Name 2",
-    "city2" => "Orange"
-];
-$email->addDynamicTemplateDatas($substitutions);
-
-$email->addCustomArg("marketing1", "false");
-$email->addCustomArg("transactional1", "true");
-$email->addCustomArg("category", "name");
-$customArgs = [
-    "marketing2" => "true",
-    "transactional2" => "false",
-    "category" => "name"
-];
-$email->addCustomArgs($customArgs);
-
-$email->setSendAt(1461775051);
-
-// You can add a personalization index or personalization parameter to the above
-// methods to add and update multiple personalizations. You can learn more about 
-// personalizations [here](https://sendgrid.com/docs/Classroom/Send/v3_Mail_Send/personalizations.html).
-
-// The values below this comment are global to an entire message
-
-$email->setFrom("test@example.com", "Twilio SendGrid");
-
-$email->setGlobalSubject("Sending with Twilio SendGrid is Fun and Global 2");
-
-$email->addContent(
-    "text/plain",
-    "and easy to do anywhere, even with PHP"
-);
-$email->addContent(
-    "text/html",
-    "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-$contents = [
-    "text/calendar" => "Party Time!!",
-    "text/calendar2" => "Party Time 2!!"
-];
-$email->addContents($contents);
-
-$email->addAttachment(
-    "base64 encoded content1",
-    "image/png",
-    "banner.png",
-    "inline",
-    "Banner"
-);
-$attachments = [
-    [   
-        "base64 encoded content2",
-        "banner2.jpeg",
-        "image/jpeg",
-        "attachment",
-        "Banner 3"
-    ],
-    [
-        "base64 encoded content3",
-        "banner3.gif",
-        "image/gif",
-        "inline",
-        "Banner 3"
-    ]
-];
-$email->addAttachments($attachments);
-
-$email->setTemplateId("d-13b8f94fbcae4ec6b75270d6cb59f932");
-
-$email->addGlobalHeader("X-Day", "Monday");
-$globalHeaders = [
-    "X-Month" => "January",
-    "X-Year" => "2017"
-];
-$email->addGlobalHeaders($globalHeaders);
-
-$email->addSection("%section1%", "Substitution for Section 1 Tag");
-$sections = [
-    "%section3%" => "Substitution for Section 3 Tag",
-    "%section4%" => "Substitution for Section 4 Tag"
-];
-$email->addSections($sections);
-
-$email->addCategory("Category 1");
-$categories = [
-    "Category 2",
-    "Category 3"
-];
-$email->addCategories($categories);
-
-$email->setBatchId(
-    "MWQxZmIyODYtNjE1Ni0xMWU1LWI3ZTUtMDgwMDI3OGJkMmY2LWEzMmViMjYxMw"
-);
-
-$email->setReplyTo("dx+replyto2@example.com", "DX Team Reply To 2");
-
-$email->setAsm(1, [1, 2, 3, 4]);
-
-$email->setIpPoolName("23");
-
-// Mail Settings
-$email->setBccSettings(true, "bcc@example.com");
-$email->enableBypassListManagement();
-//$email->disableBypassListManagement();
-$email->setFooter(true, "Footer", "<strong>Footer</strong>");
-$email->enableSandBoxMode();
-//$email->disableSandBoxMode();
-$email->setSpamCheck(true, 1, "http://mydomain.com");
-
-// Tracking Settings
-$email->setClickTracking(true, true);
-$email->setOpenTracking(true, "--sub--");
-$email->setSubscriptionTracking(
-    true,
-    "subscribe",
-    "<bold>subscribe</bold>",
-    "%%sub%%"
-);
-$email->setGanalytics(
-    true,
-    "utm_source",
-    "utm_medium",
-    "utm_term",
-    "utm_content",
-    "utm_campaign"
-);
-
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-OR
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$email = new \SendGrid\Mail\Mail();
-
-// For a detailed description of each of these settings, 
-// please see the 
-// [documentation](https://sendgrid.com/docs/API_Reference/api_v3.html).
-$email->setSubject(
-    new \SendGrid\Mail\Subject("Sending with Twilio SendGrid is Fun 2")
-);
-
-$email->addTo(new \SendGrid\Mail\To("test@example.com", "Example User"));
-$email->addTo(new \SendGrid\Mail\To("test+1@example.com", "Example User1"));
-$toEmails = [ 
-    new \SendGrid\Mail\To("test+2@example.com", "Example User2"),
-    new \SendGrid\Mail\To("test+3@example.com", "Example User3")
-];
-$email->addTos($toEmails);
-
-$email->addCc(new \SendGrid\Mail\Cc("test+4@example.com", "Example User4"));
-$ccEmails = [ 
-    new \SendGrid\Mail\Cc("test+5@example.com", "Example User5"),
-    new \SendGrid\Mail\Cc("test+6@example.com", "Example User6")
-];
-$email->addCcs($ccEmails);
-
-$email->addBcc(
-    new \SendGrid\Mail\Bcc("test+7@example.com", "Example User7")
-);
-$bccEmails = [ 
-    new \SendGrid\Mail\Bcc("test+8@example.com", "Example User8"),
-    new \SendGrid\Mail\Bcc("test+9@example.com", "Example User9")
-];
-$email->addBccs($bccEmails);
-
-$email->addHeader(new \SendGrid\Mail\Header("X-Test1", "Test1"));
-$email->addHeader(new \SendGrid\Mail\Header("X-Test2", "Test2"));
-$headers = [
-    new \SendGrid\Mail\Header("X-Test3", "Test3"),
-    new \SendGrid\Mail\Header("X-Test4", "Test4")
-];
-$email->addHeaders($headers);
-
-$email->addDynamicTemplateData(
-    new \SendGrid\Mail\Substitution("subject1", "Example Subject 1")
-);
-$email->addDynamicTemplateData(
-    new \SendGrid\Mail\Substitution("name", "Example Name 1")
-);
-$email->addDynamicTemplateData(
-    new \SendGrid\Mail\Substitution("city1", "Denver")
-);
-$substitutions = [
-    new \SendGrid\Mail\Substitution("subject2", "Example Subject 2"),
-    new \SendGrid\Mail\Substitution("name2", "Example Name 2"),
-    new \SendGrid\Mail\Substitution("city2", "Orange")
-];
-$email->addDynamicTemplateDatas($substitutions);
-
-$email->addCustomArg(new \SendGrid\Mail\CustomArg("marketing1", "false"));
-$email->addCustomArg(new \SendGrid\Mail\CustomArg("transactional1", "true"));
-$email->addCustomArg(new \SendGrid\Mail\CustomArg("category", "name"));
-$customArgs = [
-    new \SendGrid\Mail\CustomArg("marketing2", "true"),
-    new \SendGrid\Mail\CustomArg("transactional2", "false"),
-    new \SendGrid\Mail\CustomArg("category", "name")
-];
-$email->addCustomArgs($customArgs);
-
-$email->setSendAt(new \SendGrid\Mail\SendAt(1461775051));
-
-// You can add a personalization index or personalization parameter to the above
-// methods to add and update multiple personalizations. You can learn more about 
-// personalizations [here](https://sendgrid.com/docs/Classroom/Send/v3_Mail_Send/personalizations.html).
-
-// The values below this comment are global to an entire message
-
-$email->setFrom(new \SendGrid\Mail\From("test@example.com", "Twilio SendGrid"));
-
-$email->setGlobalSubject(
-    new \SendGrid\Mail\Subject("Sending with Twilio SendGrid is Fun and Global 2")
-);
-
-$plainTextContent = new \SendGrid\Mail\PlainTextContent(
-    "and easy to do anywhere, even with PHP"
-);
-$htmlContent = new \SendGrid\Mail\HtmlContent(
-    "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-$email->addContent($plainTextContent);
-$email->addContent($htmlContent);
-$contents = [
-    new \SendGrid\Mail\Content("text/calendar", "Party Time!!"),
-    new \SendGrid\Mail\Content("text/calendar2", "Party Time 2!!")
-];
-$email->addContents($contents);
-
-$email->addAttachment(
-    new \SendGrid\Mail\Attachment(
-        "base64 encoded content1",
-        "image/png",
-        "banner.png",
-        "inline",
-        "Banner"
-    )
-);
-$attachments = [
-    new \SendGrid\Mail\Attachment(
-        "base64 encoded content2",
-        "banner2.jpeg",
-        "image/jpeg",
-        "attachment",
-        "Banner 3"
-    ),
-    new \SendGrid\Mail\Attachment(
-        "base64 encoded content3",
-        "banner3.gif",
-        "image/gif",
-        "inline",
-        "Banner 3"
-    )
-];
-$email->addAttachments($attachments);
-
-$email->setTemplateId(
-    new \SendGrid\Mail\TemplateId("d-13b8f94fbcae4ec6b75270d6cb59f932")
-);
-
-$email->addGlobalHeader(new \SendGrid\Mail\Header("X-Day", "Monday"));
-$globalHeaders = [
-    new \SendGrid\Mail\Header("X-Month", "January"),
-    new \SendGrid\Mail\Header("X-Year", "2017")
-];
-$email->addGlobalHeaders($globalHeaders);
-
-$email->addSection(
-    new \SendGrid\Mail\Section(
-        "%section1%",
-        "Substitution for Section 1 Tag"
-    )
-);
-
-$sections = [
-    new \SendGrid\Mail\Section(
-        "%section3%",
-        "Substitution for Section 3 Tag"
-    ),
-    new \SendGrid\Mail\Section(
-        "%section4%",
-        "Substitution for Section 4 Tag"
-    )
-];
-$email->addSections($sections);
-
-$email->addCategory(new \SendGrid\Mail\Category("Category 1"));
-$categories = [
-    new \SendGrid\Mail\Category("Category 2"),
-    new \SendGrid\Mail\Category("Category 3")
-];
-$email->addCategories($categories);
-
-$email->setBatchId(
-    new \SendGrid\Mail\BatchId(
-        "MWQxZmIyODYtNjE1Ni0xMWU1LWI3ZTUtMDgwMDI3OGJkMmY2LWEzMmViMjYxMw"
-    )
-);
-
-$email->setReplyTo(
-    new \SendGrid\Mail\ReplyTo(
-        "dx+replyto2@example.com",
-        "DX Team Reply To 2"
-    )
-);
-
-$asm = new \SendGrid\Mail\Asm(
-    new \SendGrid\Mail\GroupId(1),
-    new \SendGrid\Mail\GroupsToDisplay([1,2,3,4])
-);
-$email->setAsm($asm);
-
-$email->setIpPoolName(new \SendGrid\Mail\IpPoolName("23"));
-
-$mail_settings = new \SendGrid\Mail\MailSettings();
-$mail_settings->setBccSettings(
-    new \SendGrid\Mail\BccSettings(true, "bcc@example.com")
-);
-$mail_settings->setBypassListManagement(
-    new \SendGrid\Mail\BypassListManagement(true)
-);
-$mail_settings->setFooter(
-    new \SendGrid\Mail\Footer(true, "Footer", "<strong>Footer</strong>")
-);
-$mail_settings->setSandBoxMode(new \SendGrid\Mail\SandBoxMode(true));
-$mail_settings->setSpamCheck(
-    new \SendGrid\Mail\SpamCheck(true, 1, "http://mydomain.com")
-);
-$email->setMailSettings($mail_settings);
-
-$tracking_settings = new \SendGrid\Mail\TrackingSettings();
-$tracking_settings->setClickTracking(
-    new \SendGrid\Mail\ClickTracking(true, true)
-);
-$tracking_settings->setOpenTracking(
-    new \SendGrid\Mail\OpenTracking(true, "--sub--")
-);
-$tracking_settings->setSubscriptionTracking(
-    new \SendGrid\Mail\SubscriptionTracking(
-        true,
-        "subscribe",
-        "<bold>subscribe</bold>",
-        "%%sub%%"
-    )
-);
-$tracking_settings->setGanalytics(
-    new \SendGrid\Mail\Ganalytics(
-        true,
-        "utm_source",
-        "utm_medium",
-        "utm_term",
-        "utm_content",
-        "utm_campaign"
-    )
-);
-$email->setTrackingSettings($tracking_settings);
-
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-<a name="single-email-single-recipient"></a>
-# Send an Email to a Single Recipient
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$email = new \SendGrid\Mail\Mail(); 
-$email->setFrom("test@example.com", "Example User");
-$email->setSubject("Sending with Twilio SendGrid is Fun");
-$email->addTo("test@example.com", "Example User");
-$email->addContent("text/plain", "and easy to do anywhere, even with PHP");
-$email->addContent(
-    "text/html", "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-OR
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$from = new \SendGrid\Mail\From("test@example.com", "Example User");
-$subject = new \SendGrid\Mail\Subject("Sending with Twilio SendGrid is Fun");
-$to = new \SendGrid\Mail\To("test@example.com", "Example User");
-$plainTextContent = new \SendGrid\Mail\PlainTextContent(
-    "and easy to do anywhere, even with PHP"
-);
-$htmlContent = new \SendGrid\Mail\HtmlContent(
-    "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-$email = new \SendGrid\Mail\Mail(
-    $from,
-    $to,
-    $subject,
-    $plainTextContent,
-    $htmlContent
-);
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-<a name="single-email-multiple-recipients"></a>
-# Send an Email to Multiple Recipients
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$email = new \SendGrid\Mail\Mail(); 
-$email->setFrom("test@example.com", "Example User");
-$tos = [ 
-    "test+test1@example.com" => "Example User1",
-    "test+test2@example.com" => "Example User2",
-    "test+test3@example.com" => "Example User3"
-];
-$email->addTos($tos);
-$email->setSubject("Sending with Twilio SendGrid is Fun");
-$email->addContent("text/plain", "and easy to do anywhere, even with PHP");
-$email->addContent(
-    "text/html", "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-OR 
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-$from = new \SendGrid\Mail\From("test@example.com", "Example User");
-$tos = [ 
-    new \SendGrid\Mail\To("test+test1@example.com", "Example User1"),
-    new \SendGrid\Mail\To("test+test2@example.com", "Example User2"),
-    new \SendGrid\Mail\To("test+test3@example.com", "Example User3")
-];
-$subject = new \SendGrid\Mail\Subject("Sending with Twilio SendGrid is Fun");
-$plainTextContent = new \SendGrid\Mail\PlainTextContent(
-    "and easy to do anywhere, even with PHP"
-);
-$htmlContent = new \SendGrid\Mail\HtmlContent(
-    "<strong>and easy to do anywhere, even with PHP</strong>"
-);
-$email = new \SendGrid\Mail\Mail(
-    $from,
-    $tos,
-    $subject,
-    $plainTextContent,
-    $htmlContent
-);
-
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-<a name="multiple-emails-multiple-recipients"></a>
-# Send Multiple Emails to Multiple Recipients
-
-Note that [transactional templates](#transactional-templates) may be a better option for this use case, especially for more complex uses.
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$from = new \SendGrid\Mail\From("test@example.com", "Example User");
-$tos = [
-    new \SendGrid\Mail\To(
-        "test+test1@example.com",
-        "Example User1",
-        [
-            '-name-' => 'Example User 1',
-            '-github-' => 'http://github.com/example_user1'
-        ],
-        "Subject 1 -name-"
-    ),
-    new \SendGrid\Mail\To(
-        "test+test2@example.com",
-        "Example User2",
-        [
-            '-name-' => 'Example User 2',
-            '-github-' => 'http://github.com/example_user2'
-        ],
-        "Subject 2 -name-"
-    ),
-    new \SendGrid\Mail\To(
-        "test+test3@example.com",
-        "Example User3",
-        [
-            '-name-' => 'Example User 3',
-            '-github-' => 'http://github.com/example_user3'
-        ]
-    )
-];
-$subject = new \SendGrid\Mail\Subject("Hi -name-!"); // default subject 
-$globalSubstitutions = [
-    '-time-' => "2018-05-03 23:10:29"
-];
-$plainTextContent = new \SendGrid\Mail\PlainTextContent(
-    "Hello -name-, your github is -github- sent at -time-"
-);
-$htmlContent = new \SendGrid\Mail\HtmlContent(
-    "<strong>Hello -name-, your github is <a href=\"-github-\">here</a></strong> sent at -time-"
-);
-$email = new \SendGrid\Mail\Mail(
-    $from,
-    $tos,
-    $subject, // or array of subjects, these take precendence
-    $plainTextContent,
-    $htmlContent,
-    $globalSubstitutions
-);
-
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-OR
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-$from = new \SendGrid\Mail\From("test@example.com", "Example User");
-$tos = [
-    new \SendGrid\Mail\To(
-        "test+test1@example.com",
-        "Example User1",
-        [
-            '-name-' => 'Example User 1',
-            '-github-' => 'http://github.com/example_user1'
-        ],
-        "Example User1 -name-"
-    ),
-    new \SendGrid\Mail\To(
-        "test+test2@example.com",
-        "Example User2",
-        [
-            '-name-' => 'Example User 2',
-            '-github-' => 'http://github.com/example_user2'
-        ],
-        "Example User2 -name-"
-    ),
-    new \SendGrid\Mail\To(
-        "test+test3@example.com",
-        "Example User3",
-        [
-            '-name-' => 'Example User 3',
-            '-github-' => 'http://github.com/example_user3'
-        ]
-    )
-];
-$subject = [
-    "Subject 1 -name-",
-    "Subject 2 -name-"
-];
-$globalSubstitutions = [
-    '-time-' => "2018-05-03 23:10:29"
-];
-$plainTextContent = new \SendGrid\Mail\PlainTextContent(
-    "Hello -name-, your github is -github- sent at -time-"
-);
-$htmlContent = new \SendGrid\Mail\HtmlContent(
-    "<strong>Hello -name-, your github is <a href=\"-github-\">here</a></strong> sent at -time-"
-);
-$email = new \SendGrid\Mail\Mail(
-    $from,
-    $tos,
-    $subject, // or array of subjects, these take precendence
-    $plainTextContent,
-    $htmlContent,
-    $globalSubstitutions
-);
-
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-<a name="transactional-templates"></a>
-# Transactional Templates
-
-For this example, we assume you have created a [transactional template](https://sendgrid.com/docs/User_Guide/Transactional_Templates/create_and_edit_transactional_templates.html) in the UI or via the API. Following is the template content we used for testing.
-
-Template ID (replace with your own):
-
-```text
-d-13b8f94fbcae4ec6b75270d6cb59f932
-```
-
-Email Subject:
-
-```text
-{{ subject }}
-```
-
-Template Body:
-
-```html
-<html>
-<head>
-	<title></title>
-</head>
-<body>
-Hello {{ name }},
-<br /><br/>
-I'm glad you are trying out the template feature!
-<br /><br/>
-I hope you are having a great day in {{ city }} :)
-<br /><br/>
-</body>
-</html>
-```
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-use \SendGrid\Mail\From as From;
-use \SendGrid\Mail\To as To;
-use \SendGrid\Mail\Subject as Subject;
-use \SendGrid\Mail\PlainTextContent as PlainTextContent;
-use \SendGrid\Mail\HtmlContent as HtmlContent;
-use \SendGrid\Mail\Mail as Mail;
-
-$from = new From("test@example.com", "Example User");
-$tos = [
-    new To(
-        "test+test1@example.com",
-        "Example User1",
-        [
-            'subject' => 'Subject 1',
-            'name' => 'Example User 1',
-            'city' => 'Denver'
-        ]
-    ),
-    new To(
-        "test+test2@example.com",
-        "Example User2",
-        [
-            'subject' => 'Subject 2',
-            'name' => 'Example User 2',
-            'city' => 'Irvine'
-        ]
-    ),
-    new To(
-        "test+test3@example.com",
-        "Example User3",
-        [
-            'subject' => 'Subject 3',
-            'name' => 'Example User 3',
-            'city' => 'Redwood City'
-        ]
-    )
-];
-$email = new Mail(
-    $from,
-    $tos
-);
-$email->setTemplateId("d-13b8f94fbcae4ec6b75270d6cb59f932");
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-OR
-
-```php
-$email = new \SendGrid\Mail\Mail();
-$email->setFrom("test@sendgrid.com", "Example User");
-$email->setSubject("I'm replacing the subject tag");
-$email->addTo(
-    "test+test1@example.com",
-    "Example User1",
-    [
-        "subject" => "Subject 1",
-        "name" => "Example User 1",
-        "city" => "Denver"
-    ],
-    0
-);
-$email->addTo(
-    "test+test2@example.com", 
-    "Example User2",
-    [
-        "subject" => "Subject 2",
-        "name" => "Example User 2",
-        "city" => "Denver"
-    ],
-    1
-);
-$email->addTo(
-    "test+test3@example.com", 
-    "Example User3",
-    [
-        "subject" => "Subject 3",
-        "name" => "Example User 3",
-        "city" => "Redwood City"
-    ],
-    2
-);
-$email->setTemplateId("d-13b8f94fbcae4ec6b75270d6cb59f932");
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-<a name="legacy-templates"></a>
-# Legacy Templates
-
-For this example, we assume you have created a [legacy template](https://sendgrid.com/docs/User_Guide/Transactional_Templates/create_and_edit_transactional_templates.html). Following is the template content we used for testing.
-
-Template ID (replace with your own):
-
-```text
-13b8f94f-bcae-4ec6-b752-70d6cb59f932
-```
-
-Email Subject:
-
-```text
-<%subject%>
-```
-
-Template Body:
-
-```html
-<html>
-<head>
-	<title></title>
-</head>
-<body>
-Hello -name-,
-<br /><br/>
-I'm glad you are trying out the template feature!
-<br /><br/>
-<%body%>
-<br /><br/>
-I hope you are having a great day in -city- :)
-<br /><br/>
-</body>
-</html>
-```
-
-```php
-<?php
-require 'vendor/autoload.php'; // If you're using Composer (recommended)
-// Comment out the above line if not using Composer
-// require("<PATH TO>/sendgrid-php.php");
-// If not using Composer, uncomment the above line and
-// download sendgrid-php.zip from the latest release here,
-// replacing <PATH TO> with the path to the sendgrid-php.php file,
-// which is included in the download:
-// https://github.com/sendgrid/sendgrid-php/releases
-
-use \SendGrid\Mail\From as From;
-use \SendGrid\Mail\To as To;
-use \SendGrid\Mail\Subject as Subject;
-use \SendGrid\Mail\PlainTextContent as PlainTextContent;
-use \SendGrid\Mail\HtmlContent as HtmlContent;
-use \SendGrid\Mail\Mail as Mail;
-
-$from = new From("test@example.com", "Example User");
-$tos = [ 
-    new To(
-        "test+test1@example.com",
-        "Example User1",
-        [
-            '-name-' => 'Example User 1',
-            '-city-' => 'Denver'
-        ]
-    ),
-    new To(
-        "test+test2@example.com",
-        "Example User2",
-        [
-            '-name-' => 'Example User 2',
-            '-city-' => 'Irvine'
-        ]
-    ),
-    new To(
-        "test+test3@example.com",
-        "Example User3",
-        [
-            '-name-' => 'Example User 3',
-            '-city-' => 'Redwood City'
-        ]
-    )
-];
-$subject = new Subject("I'm replacing the subject tag"); 
-$plainTextContent = new PlainTextContent(
-    "I'm replacing the **body tag**"
-);
-$htmlContent = new HtmlContent(
-    "I'm replacing the <strong>body tag</strong>"
-);
-$email = new Mail(
-    $from,
-    $tos,
-    $subject,
-    $plainTextContent,
-    $htmlContent
-);
-$email->setTemplateId("13b8f94f-bcae-4ec6-b752-70d6cb59f932");
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-OR
-
-```php
-$email = new \SendGrid\Mail\Mail(); 
-$email->setFrom("test@sendgrid.com", "Example User");
-$email->setSubject("I'm replacing the subject tag");
-$email->addTo(
-    "test+test1@example.com", 
-    "Example User1",
-    [ 
-        "-name-" => "Example User 1",
-        "-city-" => "Denver"
-    ],
-    0
-);
-$email->addTo(
-    "test+test2@example.com", 
-    "Example User2",
-    [ 
-        "-name-" => "Example User 2",
-        "-city-" => "Denver"
-    ],
-    1
-);
-$email->addTo(
-    "test+test3@example.com", 
-    "Example User3",
-    [ 
-        "-name-" => "Example User 3",
-        "-city-" => "Redwood City"
-    ],
-    2
-);
-$email->addContent("text/plain", "I'm replacing the **body tag**");
-$email->addContent("text/html", "I'm replacing the <strong>body tag</strong>");
-$email->setTemplateId("13b8f94f-bcae-4ec6-b752-70d6cb59f932");
-$sendgrid = new \SendGrid(getenv('SENDGRID_API_KEY'));
-try {
-    $response = $sendgrid->send($email);
-    print $response->statusCode() . "\n";
-    print_r($response->headers());
-    print $response->body() . "\n";
-} catch (Exception $e) {
-    echo 'Caught exception: '.  $e->getMessage(). "\n";
-}
-```
-
-# Send an Email With Twilio Email (Pilot)
-
-### 1. Obtain a Free Twilio Account
-
-Sign up for a free Twilio account [here](https://www.twilio.com/try-twilio?source=sendgrid-php).
-
-### 2. Set Up Your Environment Variables
-
-The Twilio API allows for authentication using with either an API key/secret or your Account SID/Auth Token. You can create an API key [here](https://twil.io/get-api-key) or obtain your Account SID and Auth Token [here](https://twil.io/console).
-
-Once you have those, follow the steps below based on your operating system.
-
-#### Linux/Mac
-
-```bash
-echo "export TWILIO_API_KEY='YOUR_TWILIO_API_KEY'" > twilio.env
-echo "export TWILIO_API_SECRET='YOUR_TWILIO_API_SECRET'" >> twilio.env
-
-# or
-
-echo "export TWILIO_ACCOUNT_SID='YOUR_TWILIO_ACCOUNT_SID'" > twilio.env
-echo "export TWILIO_AUTH_TOKEN='YOUR_TWILIO_AUTH_TOKEN'" >> twilio.env
-```
-
-Then:
-
-```bash
-echo "twilio.env" >> .gitignore
-source ./twilio.env
-```
-
-#### Windows
-
-Temporarily set the environment variable (accessible only during the current CLI session):
-
-```bash
-set TWILIO_API_KEY=YOUR_TWILIO_API_KEY
-set TWILIO_API_SECRET=YOUR_TWILIO_API_SECRET
-
-: or
-
-set TWILIO_ACCOUNT_SID=YOUR_TWILIO_ACCOUNT_SID
-set TWILIO_AUTH_TOKEN=YOUR_TWILIO_AUTH_TOKEN
-```
-
-Or permanently set the environment variable (accessible in all subsequent CLI sessions):
-
-```bash
-setx TWILIO_API_KEY "YOUR_TWILIO_API_KEY"
-setx TWILIO_API_SECRET "YOUR_TWILIO_API_SECRET"
-
-: or
-
-setx TWILIO_ACCOUNT_SID "YOUR_TWILIO_ACCOUNT_SID"
-setx TWILIO_AUTH_TOKEN "YOUR_TWILIO_AUTH_TOKEN"
-```
-
-### 3. Initialize the Twilio Email Client
-
-```php
-$twilioEmail = new \TwilioEmail(\getenv('TWILIO_API_KEY'), \getenv('TWILIO_API_SECRET'));
-
-// or
-
-$twilioEmail = new \TwilioEmail(\getenv('TWILIO_ACCOUNT_SID'), \getenv('TWILIO_AUTH_TOKEN'));
-```
-
-This client has the same interface as the `SendGrid` client.
-
-# Send an SMS Message
-
-First, follow the above steps for creating a Twilio account and setting up environment variables with the proper credentials.
-
-Then, install the Twilio Helper Library.
-
-```bash
-composer require twilio/sdk
-```
-
-Finally, send a message.
-
-```php
-<?php
-$sid = \getenv('TWILIO_ACCOUNT_SID');
-$token = \getenv('TWILIO_AUTH_TOKEN');
-
-$client = new \Twilio\Rest\Client($sid, $token);
-$message = $client->messages->create(
-  '8881231234', // Text this number
-  [
-    'from' => '9991231234', // From a valid Twilio number
-    'body' => 'Hello from Twilio!'
-  ]
-);
-```
-
-For more information, please visit the [Twilio SMS PHP documentation](https://www.twilio.com/docs/sms/quickstart/python).
-
-<a name="domain-authentication"></a>
-# How to Set up a Domain Authentication
-
-You can find documentation for how to setup a domain authentication via the UI [here](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-domain-authentication/) and via API [here](https://github.com/sendgrid/sendgrid-php/blob/master/USAGE.md#sender-authentication).
-
-Find more information about all of Twilio SendGrid's authentication related documentation [here](https://sendgrid.com/docs/ui/account-and-settings/).
-
-<a name="email-stats"></a>
-# How to View Email Statistics
-
-You can find documentation for how to view your email statistics via the UI [here](https://app.example.com/statistics) and via API [here](https://github.com/sendgrid/sendgrid-php/blob/master/USAGE.md#stats).
-
-Alternatively, we can post events to a URL of your choice via our [Event Webhook](https://example.com/docs/API_Reference/Webhooks/event.html) about events that occur as Twilio SendGrid processes your email.
-
-<a name="heroku"></a>
-# Deploying to Heroku
-
-Use the button below to instantly setup your own Simple instance for sending email using sendgrid on Heroku.
-
-<a href="https://heroku.com/deploy?template=https://github.com/sendgrid/sendgrid-php/tree/example-heroku-hello-email">
-  <img src="https://www.herokucdn.com/deploy/button.svg" alt="Deploy">
-</a>
-
-<a name="GAE-instructions"></a>
-# Google App Engine Installation
-
-Google App Engine installations with composer require the creation of file `php.ini` in the base folder(the same directory as the `app.yaml` file). You can read more about this file [here](https://cloud.google.com/appengine/docs/standard/php/config/php_ini).
-
-The file `php.ini` should contain:
-
-```ini
-google_app_engine.enable_curl_lite = 1
-```
diff --git a/libs/sendgrid/composer.lock b/libs/sendgrid/composer.lock
deleted file mode 100644
index 251bdf6..0000000
--- a/libs/sendgrid/composer.lock
+++ /dev/null
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diff --git a/libs/sendgrid/lib/BaseInterface.php b/libs/sendgrid/lib/BaseInterface.php
deleted file mode 100644
index 122422a..0000000
--- a/libs/sendgrid/lib/BaseInterface.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-
-/**
- * This class is the base interface to the Twilio SendGrid Web API.
- *
- * @package SendGrid\Mail
- */
-class BaseInterface
-{
-    const VERSION = '7.5.0';
-
-    // @var \SendGrid\Client
-    public $client;
-    // @var string
-    public $version = self::VERSION;
-
-    /**
-     * Set up the HTTP Client.
-     *
-     * @param string $auth Authorization header value.
-     * @param string $host Default host/base URL for the client.
-     * @param array $options An array of options, currently only "host", "curl", and
-     *                       "impersonateSubuser" are implemented.
-     */
-    public function __construct($auth, $host, $options = array())
-    {
-        $headers = [
-            $auth,
-            'User-Agent: sendgrid/' . $this->version . ';php',
-            'Accept: application/json',
-        ];
-
-        $host = isset($options['host']) ? $options['host'] : $host;
-
-        if (!empty($options['impersonateSubuser'])) {
-            $headers[] = 'On-Behalf-Of: ' . $options['impersonateSubuser'];
-        }
-
-        $curlOptions = isset($options['curl']) ? $options['curl'] : null;
-
-        $this->client = new \SendGrid\Client(
-            $host,
-            $headers,
-            '/v3',
-            null,
-            $curlOptions
-        );
-    }
-
-    /**
-     * Make an API request.
-     *
-     * @param \SendGrid\Mail\Mail $email A Mail object, containing the request object
-     *
-     * @return \SendGrid\Response
-     */
-    public function send(\SendGrid\Mail\Mail $email)
-    {
-        return $this->client->mail()->send()->post($email);
-    }
-}
diff --git a/libs/sendgrid/lib/SendGrid.php b/libs/sendgrid/lib/SendGrid.php
deleted file mode 100644
index 372a0f8..0000000
--- a/libs/sendgrid/lib/SendGrid.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-/**
- * This library allows you to quickly and easily send emails through Twilio
- * SendGrid using PHP.
- *
- * @package SendGrid\Mail
- */
-class SendGrid extends BaseInterface
-{
-    /**
-     * Set up the HTTP Client.
-     *
-     * @param string $apiKey Your Twilio SendGrid API Key.
-     * @param array $options An array of options, currently only "host", "curl", and
-     *                       "impersonateSubuser", are implemented.
-     */
-    public function __construct($apiKey, $options = array())
-    {
-        $auth = 'Authorization: Bearer ' . $apiKey;
-        $host = 'https://api.sendgrid.com';
-        parent::__construct($auth, $host, $options);
-    }
-}
diff --git a/libs/sendgrid/lib/TwilioEmail.php b/libs/sendgrid/lib/TwilioEmail.php
deleted file mode 100644
index b292324..0000000
--- a/libs/sendgrid/lib/TwilioEmail.php
+++ /dev/null
@@ -1,25 +0,0 @@
-<?php
-
-/**
- * This library allows you to quickly and easily send emails through Twilio
- * SendGrid using PHP.
- *
- * @package SendGrid\Mail
- */
-class TwilioEmail extends BaseInterface
-{
-    /**
-     * Set up the HTTP Client.
-     *
-     * @param string $username Username to authenticate with
-     * @param string $password Password to authenticate with
-     * @param array $options An array of options, currently only "host", "curl", and
-     *                       "impersonateSubuser", are implemented.
-     */
-    public function __construct($username, $password, $options = array())
-    {
-        $auth = 'Authorization: Basic ' . \base64_encode("$username:$password");
-        $host = 'https://email.twilio.com';
-        parent::__construct($auth, $host, $options);
-    }
-}
diff --git a/libs/sendgrid/lib/contacts/README.md b/libs/sendgrid/lib/contacts/README.md
deleted file mode 100644
index 1871ec9..0000000
--- a/libs/sendgrid/lib/contacts/README.md
+++ /dev/null
@@ -1,16 +0,0 @@
-# Recipients Helper
-
-**This helper allows you to quickly and easily build a subscription form to add contacts to your contactdb in SendGrid.**
-
-## Quick Start
-
-Run the [example](https://github.com/sendgrid/sendgrid-php/blob/master/examples/helpers/contacts/recipients.php) (make sure you have set your environment variable to include your SENDGRID_API_KEY).
-
-```bash
-php examples/helpers/contacts/recipients.php
-```
-
-## Usage
-
-- See this complete working [example](https://github.com/sendgrid/sendgrid-php/blob/master/examples/helpers/contacts/recipients.php).
-- [Documentation](https://sendgrid.com/docs/API_Reference/api_v3.html#contacts-api-recipients)
diff --git a/libs/sendgrid/lib/contacts/Recipient.php b/libs/sendgrid/lib/contacts/Recipient.php
deleted file mode 100644
index 5081171..0000000
--- a/libs/sendgrid/lib/contacts/Recipient.php
+++ /dev/null
@@ -1,83 +0,0 @@
-<?php
-/**
- * This helper builds a recipient for a /mail/send API call
- */
-
-namespace SendGrid\Contacts;
-/**
- * This class is used to construct a recipient for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Recipient implements \JsonSerializable
-{
-    /** @var $firstName string First name of the email recipient */
-    private $firstName;
-    /** @var $lastName string Last name of the email recipient */
-    private $lastName;
-    /** @var $email string Email address of the recipient */
-    private $email;
-
-    /**
-     * Create a recipient for the /mail/send API call
-     *
-     * @param string $firstName First name of the email recipient
-     * @param string $lastName Last name of the email recipient
-     * @param string $email Email address of the recipient
-     */
-    public function __construct($firstName, $lastName, $email)
-    {
-        $this->firstName = $firstName;
-        $this->lastName = $lastName;
-        $this->email = $email;
-    }
-
-    /**
-     * Retrieve the first name of the recipient
-     *
-     * @return string
-     */
-    public function getFirstName()
-    {
-        return $this->firstName;
-    }
-
-    /**
-     * Retrieve the last name of the recipient
-     *
-     * @return string
-     */
-    public function getLastName()
-    {
-        return $this->lastName;
-    }
-
-    /**
-     * Retrieve the email address of the recipient
-     *
-     * @return string
-     */
-    public function getEmail()
-    {
-        return $this->email;
-    }
-
-    /**
-     * Return an array representing a recipient object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'email' => $this->getEmail(),
-                'first_name' => $this->getFirstName(),
-                'last_name' => $this->getLastName()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/contacts/RecipientForm.php b/libs/sendgrid/lib/contacts/RecipientForm.php
deleted file mode 100644
index cb1a1b8..0000000
--- a/libs/sendgrid/lib/contacts/RecipientForm.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-/**
- * This helper builds a html form and provides a submission endpoint
- * for the form that makes a /contactdb/recipients API call.
- */
-
-namespace SendGrid\Contacts;
-
-/**
- * This class is used to build a html form and provides a submission
- * endpoint for the form that makes a /contactdb/recipients API call.
- *
- * @package SendGrid\Contacts
- */
-class RecipientForm
-{
-    /** @var $html string HTML content for the form */
-    private $html;
-
-    /**
-     * Form constructor
-     *
-     * @param string $url The url the form should submit to
-     */
-    public function __construct($url)
-    {
-        $html = '<form action="' . $url . '" method="post">
-    First Name: <input type="text" name="first-name"><br>
-    Last Name: <input type="text" name="last-name"><br>
-    E-mail: <input type="text" name="email"><br>
-    <input type="submit">
-</form>';
-        $this->html = $html;
-    }
-
-    /**
-     * Return the HTML form
-     *
-     * @return string
-     */
-    public function __toString()
-    {
-        return $this->html;
-    }
-
-}
diff --git a/libs/sendgrid/lib/loader.php b/libs/sendgrid/lib/loader.php
deleted file mode 100644
index 0f05dd1..0000000
--- a/libs/sendgrid/lib/loader.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-/**
- * Allows us to include one file instead of two when working without composer.
- */
-require_once __DIR__ . '/BaseInterface.php';
-require_once __DIR__ . '/SendGrid.php';
-require_once __DIR__ . '/TwilioEmail.php';
-require_once __DIR__ . '/contacts/Recipient.php';
-require_once __DIR__ . '/contacts/RecipientForm.php';
-require_once __DIR__ . '/mail/EmailAddress.php';
-require_once __DIR__ . '/mail/Asm.php';
-require_once __DIR__ . '/mail/Attachment.php';
-require_once __DIR__ . '/mail/BatchId.php';
-require_once __DIR__ . '/mail/Bcc.php';
-require_once __DIR__ . '/mail/BccSettings.php';
-require_once __DIR__ . '/mail/BypassListManagement.php';
-require_once __DIR__ . '/mail/Category.php';
-require_once __DIR__ . '/mail/Cc.php';
-require_once __DIR__ . '/mail/ClickTracking.php';
-require_once __DIR__ . '/mail/Content.php';
-require_once __DIR__ . '/mail/CustomArg.php';
-require_once __DIR__ . '/mail/Footer.php';
-require_once __DIR__ . '/mail/From.php';
-require_once __DIR__ . '/mail/Ganalytics.php';
-require_once __DIR__ . '/mail/GroupId.php';
-require_once __DIR__ . '/mail/GroupsToDisplay.php';
-require_once __DIR__ . '/mail/Header.php';
-require_once __DIR__ . '/mail/HtmlContent.php';
-require_once __DIR__ . '/mail/IpPoolName.php';
-require_once __DIR__ . '/mail/Mail.php';
-require_once __DIR__ . '/mail/MailSettings.php';
-require_once __DIR__ . '/mail/MimeType.php';
-require_once __DIR__ . '/mail/OpenTracking.php';
-require_once __DIR__ . '/mail/Personalization.php';
-require_once __DIR__ . '/mail/PlainTextContent.php';
-require_once __DIR__ . '/mail/ReplyTo.php';
-require_once __DIR__ . '/mail/Section.php';
-require_once __DIR__ . '/mail/SandBoxMode.php';
-require_once __DIR__ . '/mail/SendAt.php';
-require_once __DIR__ . '/mail/SpamCheck.php';
-require_once __DIR__ . '/mail/Subject.php';
-require_once __DIR__ . '/mail/SubscriptionTracking.php';
-require_once __DIR__ . '/mail/Substitution.php';
-require_once __DIR__ . '/mail/TemplateId.php';
-require_once __DIR__ . '/mail/TrackingSettings.php';
-require_once __DIR__ . '/mail/To.php';
-require_once __DIR__ . '/stats/Stats.php';
diff --git a/libs/sendgrid/lib/mail/Asm.php b/libs/sendgrid/lib/mail/Asm.php
deleted file mode 100644
index 6d88795..0000000
--- a/libs/sendgrid/lib/mail/Asm.php
+++ /dev/null
@@ -1,142 +0,0 @@
-<?php
-/**
- * This helper builds the Asm object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Asm object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Asm implements \JsonSerializable
-{
-    /** @var $group_id int The unsubscribe group to associate with this email */
-    private $group_id;
-    /**
-     * @var $groups_to_display int[] An array containing the unsubscribe groups that you
-     * would like to be displayed on the unsubscribe preferences page.
-     */
-    private $groups_to_display;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param int|GroupId|null           $group_id          A GroupId object or the
-	 *                                                      unsubscribe group to
-	 *                                                      associate with this email
-	 * @param int[]|GroupsToDisplay|null $groups_to_display A GroupsToDisplay
-	 *                                                      object or an array
-	 *                                                      containing the
-	 *                                                      unsubscribe groups
-	 *                                                      that you would like
-	 *                                                      to be displayed
-	 *                                                      on the unsubscribe
-	 *                                                      preferences page.
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct(
-        $group_id = null,
-        $groups_to_display = null
-    ) {
-        if (isset($group_id)) {
-            $this->setGroupId($group_id);
-        }
-        if (isset($groups_to_display)) {
-            $this->setGroupsToDisplay($groups_to_display);
-        }
-    }
-
-    /**
-     * Add the group id to a Asm object
-     *
-     * @param int|GroupId $group_id The unsubscribe group to associate with this
-     *                              email
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setGroupId($group_id)
-    {
-        if ($group_id instanceof GroupId) {
-            $this->group_id = $group_id->getGroupId();
-        } else {
-            if (!is_int($group_id)) {
-                throw new TypeException(
-                    '$group_id must be an instance of Twilio SendGrid\Mail\GroupId or of type int.'
-                );
-            }
-            $this->group_id = new GroupId($group_id);
-        }
-        return;
-    }
-
-    /**
-     * Retrieve the GroupId object from a Asm object
-     *
-     * The unsubscribe group to associate with this email
-     *
-     * @return int
-     */
-    public function getGroupId()
-    {
-        return $this->group_id;
-    }
-
-    /**
-     * Add the groups to display id(s) to a Asm object
-     *
-     * @param int[]|GroupsToDisplay $groups_to_display A GroupsToDisplay
-     *                                                 object or an array
-     *                                                 containing the
-     *                                                 unsubscribe groups
-     *                                                 that you would like
-     *                                                 to be displayed
-     *                                                 on the unsubscribe
-     *                                                 preferences page.
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setGroupsToDisplay($groups_to_display)
-    {
-        if ($groups_to_display instanceof GroupsToDisplay) {
-            $this->groups_to_display = $groups_to_display->getGroupsToDisplay();
-        } else {
-            if (!is_array($groups_to_display)) {
-                throw new TypeException(
-                    '$groups_to_display must be an instance of Twilio SendGrid\Mail\GroupsToDisplay or of type array.'
-                );
-            }
-            $this->groups_to_display = new GroupsToDisplay($groups_to_display);
-        }
-        return;
-    }
-
-    /**
-     * Retrieve the groups to display id(s) from a Asm object
-     *
-     * @return int[]
-     */
-    public function getGroupsToDisplay()
-    {
-        return $this->groups_to_display;
-    }
-
-    /**
-     * Return an array representing a Asm object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'group_id' => $this->getGroupId(),
-                'groups_to_display' => $this->getGroupsToDisplay()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Attachment.php b/libs/sendgrid/lib/mail/Attachment.php
deleted file mode 100644
index 299561b..0000000
--- a/libs/sendgrid/lib/mail/Attachment.php
+++ /dev/null
@@ -1,228 +0,0 @@
-<?php
-/**
- * This helper builds the Attachment object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Attachment object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Attachment implements \JsonSerializable
-{
-    /** @var $content string Base64 encoded content */
-    private $content;
-    /** @var $type string Mime type of the attachment */
-    private $type;
-    /** @var $filename string File name of the attachment */
-    private $filename;
-    /** @var $disposition string How the attachment should be displayed: inline or attachment, default is attachment */
-    private $disposition;
-    /** @var $content_id string Used when disposition is inline to display the file within the body of the email */
-    private $content_id;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string $content     Base64 encoded content
-	 * @param string $type        Mime type of the attachment
-	 * @param string $filename    File name of the attachment
-	 * @param string $disposition How the attachment should be displayed: inline
-	 *                            or attachment, default is attachment
-	 * @param string $content_id  Used when disposition is inline to display the
-	 *                            file within the body of the email
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct(
-        $content = null,
-        $type = null,
-        $filename = null,
-        $disposition = null,
-        $content_id = null
-    ) {
-        if (isset($content)) {
-            $this->setContent($content);
-        }
-        if (isset($type)) {
-            $this->setType($type);
-        }
-        if (isset($filename)) {
-            $this->setFilename($filename);
-        }
-        if (isset($disposition)) {
-            $this->setDisposition($disposition);
-        }
-        if (isset($content_id)) {
-            $this->setContentID($content_id);
-        }
-    }
-
-    /**
-     * Add the content to a Attachment object
-     *
-     * @param string $content Base64 encoded content
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setContent($content)
-    {
-        if (!is_string($content)) {
-            throw new TypeException('$content must be of type string.');
-        }
-        if (!$this->isBase64($content)) {
-            $this->content = base64_encode($content);
-        } else {
-            $this->content = $content;
-        }
-    }
-
-    /**
-     * Retrieve the content from a Attachment object
-     *
-     * @return string
-     */
-    public function getContent()
-    {
-        return $this->content;
-    }
-
-    /**
-     * Add the mime type to a Attachment object
-     *
-     * @param string $type Mime type of the attachment
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setType($type)
-    {
-        if (!is_string($type)) {
-            throw new TypeException('$type must be of type string.');
-        }
-        $this->type = $type;
-    }
-
-    /**
-     * Retrieve the mime type from a Attachment object
-     *
-     * @return string
-     */
-    public function getType()
-    {
-        return $this->type;
-    }
-
-    /**
-     * Add the file name to a Attachment object
-     *
-     * @param string $filename File name of the attachment
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setFilename($filename)
-    {
-        if (!is_string($filename)) {
-            throw new TypeException('$filename must be of type string');
-        }
-        $this->filename = $filename;
-    }
-
-    /**
-     * Retrieve the file name from a Attachment object
-     *
-     * @return string
-     */
-    public function getFilename()
-    {
-        return $this->filename;
-    }
-
-    /**
-     * Add the disposition to a Attachment object
-     *
-     * @param string $disposition How the attachment should be displayed:
-     *                            inline or attachment, default is attachment
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setDisposition($disposition)
-    {
-        if (!is_string($disposition)) {
-            throw new TypeException('$disposition must be of type string.');
-        }
-        $this->disposition = $disposition;
-    }
-
-    /**
-     * Retrieve the disposition from a Attachment object
-     *
-     * @return string
-     */
-    public function getDisposition()
-    {
-        return $this->disposition;
-    }
-
-	/**
-	 * Add the content id to a Attachment object
-	 *
-	 * @param string $content_id Used when disposition is inline to display
-	 *                           the file within the body of the email
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function setContentID($content_id)
-    {
-        if (!is_string($content_id)) {
-            throw new TypeException('$content_id must be of type string.');
-        }
-        $this->content_id = $content_id;
-    }
-
-    /**
-     * Retrieve the content id from a Attachment object
-     *
-     * @return string
-     */
-    public function getContentID()
-    {
-        return $this->content_id;
-    }
-
-    /**
-     *  Verifies whether or not the provided string is a valid base64 string
-     *
-     * @param $string string The string that has to be checked
-     * @return bool
-     */
-    private function isBase64($string)
-    {
-        $decoded_data = base64_decode($string, true);
-        $encoded_data = base64_encode($decoded_data);
-        if ($encoded_data != $string) {
-            return false;
-        }
-        return true;
-    }
-
-    /**
-     * Return an array representing a Attachment object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'content' => $this->getContent(),
-                'type' => $this->getType(),
-                'filename' => $this->getFilename(),
-                'disposition' => $this->getDisposition(),
-                'content_id' => $this->getContentID()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/BatchId.php b/libs/sendgrid/lib/mail/BatchId.php
deleted file mode 100644
index 742cf1d..0000000
--- a/libs/sendgrid/lib/mail/BatchId.php
+++ /dev/null
@@ -1,67 +0,0 @@
-<?php
-/**
- * This helper builds the BatchId object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a BatchId object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class BatchId implements \JsonSerializable
-{
-    /** @var $batch_id string This ID represents a batch of emails to be sent at the same time */
-    private $batch_id;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $batch_id This ID represents a batch of emails to
-	 *                              be sent at the same time
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($batch_id = null)
-    {
-        if (isset($batch_id)) {
-            $this->setBatchId($batch_id);
-        }
-    }
-
-    /**
-     * Add the batch id to a BatchId object
-     *
-     * @param string $batch_id This ID represents a batch of emails to be sent
-     *                         at the same time
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setBatchId($batch_id)
-    {
-        if (!is_string($batch_id)) {
-            throw new TypeException('$batch_id must be of type string.');
-        }
-        $this->batch_id = $batch_id;
-    }
-
-    /**
-     * Return the batch id from a BatchId object
-     *
-     * @return string
-     */
-    public function getBatchId()
-    {
-        return $this->batch_id;
-    }
-
-    /**
-     * Return an array representing a BatchId object for the Twilio SendGrid API
-     *
-     * @return null|string
-     */
-    public function jsonSerialize()
-    {
-        return $this->getBatchId();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Bcc.php b/libs/sendgrid/lib/mail/Bcc.php
deleted file mode 100644
index fa764b1..0000000
--- a/libs/sendgrid/lib/mail/Bcc.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * This helper builds the Bcc object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Bcc object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Bcc extends EmailAddress implements \JsonSerializable
-{
-}
diff --git a/libs/sendgrid/lib/mail/BccSettings.php b/libs/sendgrid/lib/mail/BccSettings.php
deleted file mode 100644
index 0d181a3..0000000
--- a/libs/sendgrid/lib/mail/BccSettings.php
+++ /dev/null
@@ -1,110 +0,0 @@
-<?php
-/**
- * This helper builds the BccSettings object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a BccSettings object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class BccSettings implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-    /** @var $email string The email address that you would like to receive the BCC */
-    private $email;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null   $enable Indicates if this setting is enabled
-	 * @param string|null $email  The email address that you would like
-	 *                            to receive the BCC
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($enable = null, $email = null)
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-        if (isset($email)) {
-            $this->setEmail($email);
-        }
-    }
-
-    /**
-     * Update the enable setting on a BccSettings object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool.');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a BccSettings object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Add the email setting on a BccSettings object
-     *
-     * @param string $email The email address that you would like
-     *                      to receive the BCC
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEmail($email)
-    {
-        if (!is_string($email) &&
-            filter_var($email, FILTER_VALIDATE_EMAIL)
-        ) {
-            throw new TypeException(
-                '$email must valid and be of type string.'
-            );
-        }
-        $this->email = $email;
-    }
-
-    /**
-     * Retrieve the email setting on a BccSettings object
-     *
-     * @return string
-     */
-    public function getEmail()
-    {
-        return $this->email;
-    }
-
-    /**
-     * Return an array representing a BccSettings object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable(),
-                'email' => $this->getEmail()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/BypassListManagement.php b/libs/sendgrid/lib/mail/BypassListManagement.php
deleted file mode 100644
index b00f10f..0000000
--- a/libs/sendgrid/lib/mail/BypassListManagement.php
+++ /dev/null
@@ -1,79 +0,0 @@
-<?php
-/**
- * This helper builds the BypassListManagement object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a BypassListManagement object for
- * the /mail/send API call
- *
- * Allows you to bypass all unsubscribe groups and suppressions to
- * ensure that the email is delivered to every single recipient. This
- * should only be used in emergencies when it is absolutely necessary
- * that every recipient receives your email
- *
- * @package SendGrid\Mail
- */
-class BypassListManagement implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null $enable Indicates if this setting is enabled
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($enable = null)
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-    }
-
-    /**
-     * Update the enable setting on a BypassListManagement object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool.');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a BypassListManagement object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Return an array representing a BypassListManagement object for
-     * the SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Category.php b/libs/sendgrid/lib/mail/Category.php
deleted file mode 100644
index 8f50617..0000000
--- a/libs/sendgrid/lib/mail/Category.php
+++ /dev/null
@@ -1,69 +0,0 @@
-<?php
-/**
- * This helper builds the Category object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Category object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Category implements \JsonSerializable
-{
-    /** @var $category string A category name for an email message. Each category name may not exceed 255 characters */
-    private $category;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $category A category name for an email message.
-	 *                              Each category name may not exceed 255
-	 *                              characters
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($category = null)
-    {
-        if (isset($category)) {
-            $this->setCategory($category);
-        }
-    }
-
-    /**
-     * Add a category to a Category object
-     *
-     * @param string $category A category name for an email message.
-     *                         Each category name may not exceed 255
-     *                         characters
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setCategory($category)
-    {
-        if (!is_string($category)) {
-            throw new TypeException('$category must be of type string.');
-        }
-        $this->category = $category;
-    }
-
-    /**
-     * Retrieve a category from a Category object
-     *
-     * @return string
-     */
-    public function getCategory()
-    {
-        return $this->category;
-    }
-
-    /**
-     * Return an array representing a Category object for the Twilio SendGrid API
-     *
-     * @return string
-     */
-    public function jsonSerialize()
-    {
-        return $this->getCategory();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Cc.php b/libs/sendgrid/lib/mail/Cc.php
deleted file mode 100644
index 28fcd3e..0000000
--- a/libs/sendgrid/lib/mail/Cc.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * This helper builds the Cc object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Cc object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Cc extends EmailAddress implements \JsonSerializable
-{
-}
diff --git a/libs/sendgrid/lib/mail/ClickTracking.php b/libs/sendgrid/lib/mail/ClickTracking.php
deleted file mode 100644
index 6a28fcb..0000000
--- a/libs/sendgrid/lib/mail/ClickTracking.php
+++ /dev/null
@@ -1,106 +0,0 @@
-<?php
-/**
- * This helper builds the ClickTracking object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a ClickTracking object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class ClickTracking implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-    /* @var $enable_text bool Indicates if this setting should be included in the text/plain portion of your email */
-    private $enable_text;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null $enable      Indicates if this setting is enabled
-	 * @param bool|null $enable_text Indicates if this setting should be
-	 *                               included in the text/plain portion of
-	 *                               your email
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($enable = null, $enable_text = null)
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-        if (isset($enable_text)) {
-            $this->setEnableText($enable_text);
-        }
-    }
-
-    /**
-     * Update the enable setting on a ClickTracking object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool.');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a ClickTracking object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Update the enable text setting on a ClickTracking object
-     *
-     * @param bool $enable_text Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnableText($enable_text)
-    {
-        if (!is_bool($enable_text)) {
-            throw new TypeException('$enable_text must be of type bool');
-        }
-        $this->enable_text = $enable_text;
-    }
-
-    /**
-     * Retrieve the enable_text setting on a ClickTracking object
-     *
-     * @return bool
-     */
-    public function getEnableText()
-    {
-        return $this->enable_text;
-    }
-
-    /**
-     * Return an array representing a ClickTracking object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable(),
-                'enable_text' => $this->getEnableText()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Content.php b/libs/sendgrid/lib/mail/Content.php
deleted file mode 100644
index 1e01cc0..0000000
--- a/libs/sendgrid/lib/mail/Content.php
+++ /dev/null
@@ -1,110 +0,0 @@
-<?php
-/**
- * This helper builds the Content object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Content object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Content implements \JsonSerializable
-{
-    /** @var $type string The mime type of the content you are including in your email. For example, “text/plain” or “text/html” */
-    private $type;
-    /** @var $value string The actual content of the specified mime type that you are including in your email */
-    private $value;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $type  The mime type of the content you are including
-	 *                           in your email. For example, “text/plain” or
-	 *                           “text/html”
-	 * @param string|null $value The actual content of the specified mime type
-	 *                           that you are including in your email
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($type = null, $value = null)
-    {
-        if (isset($type)) {
-            $this->setType($type);
-        }
-        if (isset($value)) {
-            $this->setValue($value);
-        }
-    }
-
-    /**
-     * Add the mime type on a Content object
-     *
-     * @param string $type The mime type of the content you are including
-     *                     in your email. For example, “text/plain” or
-     *                     “text/html”
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setType($type)
-    {
-        if (!is_string($type)) {
-            throw new TypeException('$type must be of type string.');
-        }
-        $this->type = $type;
-    }
-
-    /**
-     * Retrieve the mime type on a Content object
-     *
-     * @return string
-     */
-    public function getType()
-    {
-        return $this->type;
-    }
-
-    /**
-     * Add the content value to a Content object
-     *
-     * @param string $value The actual content of the specified mime type
-     *                      that you are including in your email
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setValue($value)
-    {
-        if (!is_string($value)) {
-            throw new TypeException('$value must be of type string');
-        }
-        $this->value = mb_convert_encoding($value, 'UTF-8', 'UTF-8');
-    }
-
-    /**
-     * Retrieve the content value to a Content object
-     *
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->value;
-    }
-
-    /**
-     * Return an array representing a Contact object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'type' => $this->getType(),
-                'value' => $this->getValue()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/CustomArg.php b/libs/sendgrid/lib/mail/CustomArg.php
deleted file mode 100644
index 1744ac1..0000000
--- a/libs/sendgrid/lib/mail/CustomArg.php
+++ /dev/null
@@ -1,111 +0,0 @@
-<?php
-/**
- * This helper builds the CustomArg object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a CustomArg object for the /mail/send API call
- *
- * Values that are specific to the entire send that will be carried along with the
- * email and its activity data. Substitutions will not be made on custom arguments,
- * so any string that is entered into this parameter will be assumed to be the
- * custom argument that you would like to be used. This parameter is overridden by
- * personalizations[x].custom_args if that parameter has been defined. Total custom
- * args size may not exceed 10,000 bytes.
- *
- * @package SendGrid\Mail
- */
-class CustomArg implements \JsonSerializable
-{
-    /** @var $key string Custom arg key */
-    private $key;
-    /** @var $value string Custom arg value */
-    private $value;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $key   Custom arg key
-	 * @param string|null $value Custom arg value
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($key = null, $value = null)
-    {
-        if (isset($key)) {
-            $this->setKey($key);
-        }
-        if (isset($value)) {
-            $this->setValue($value);
-        }
-    }
-
-    /**
-     * Add a custom arg key on a CustomArg object
-     *
-     * @param string $key Custom arg key
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setKey($key)
-    {
-        if (!is_string($key)) {
-            throw new TypeException('$key must be of type string');
-        }
-        $this->key = (string) $key;
-    }
-
-    /**
-     * Retrieve a custom arg key on a CustomArg object
-     *
-     * @return string
-     */
-    public function getKey()
-    {
-        return $this->key;
-    }
-
-    /**
-     * Add a custom arg value on a CustomArg object
-     *
-     * @param string $value Custom arg value
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setValue($value)
-    {
-        if (!is_string($value)) {
-            throw new TypeException('$value must be of type string.');
-        }
-        $this->value = (string) $value;
-    }
-
-    /**
-     * Retrieve a custom arg key on a CustomArg object
-     *
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->value;
-    }
-
-    /**
-     * Return an array representing a CustomArg object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'key' => $this->getKey(),
-                'value' => $this->getValue()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/EmailAddress.php b/libs/sendgrid/lib/mail/EmailAddress.php
deleted file mode 100644
index de75b4f..0000000
--- a/libs/sendgrid/lib/mail/EmailAddress.php
+++ /dev/null
@@ -1,213 +0,0 @@
-<?php
-/**
- * This helper builds the EmailAddress object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a EmailAddress object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class EmailAddress implements \JsonSerializable
-{
-    /** @var $name string The name of the person associated with the email */
-    private $name;
-    /** @var $email string The email address */
-    private $email;
-    /** @var $substitutions Substitution[] An array of key/value substitutions
-     * to be be applied to the text and html content of the email body
-     */
-    private $substitutions;
-    /** @var $subject Subject The personalized subject of the email */
-    private $subject;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $emailAddress  The email address
-	 * @param string|null $name          The name of the person associated with
-	 *                                   the email
-	 * @param array|null  $substitutions An array of key/value substitutions to
-	 *                                   be be applied to the text and html content
-	 *                                   of the email body
-	 * @param string|null $subject       The personalized subject of the email
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct(
-        $emailAddress = null,
-        $name = null,
-        $substitutions = null,
-        $subject = null
-    ) {
-        if (isset($emailAddress)) {
-            $this->setEmailAddress($emailAddress);
-        }
-        if (isset($name) && $name !== null) {
-            $this->setName($name);
-        }
-        if (isset($substitutions)) {
-            $this->setSubstitutions($substitutions);
-        }
-        if (isset($subject)) {
-            $this->setSubject($subject);
-        }
-    }
-
-    /**
-     * Add the email address to a EmailAddress object
-     *
-     * @param string $emailAddress The email address
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEmailAddress($emailAddress)
-    {
-        if (!(is_string($emailAddress) &&
-            filter_var($emailAddress, FILTER_VALIDATE_EMAIL))
-        ) {
-            throw new TypeException(
-                "{$emailAddress} must be valid and of type string."
-            );
-        }
-        $this->email = $emailAddress;
-    }
-
-    /**
-     * Retrieve the email address from a EmailAddress object
-     *
-     * @return string
-     */
-    public function getEmailAddress()
-    {
-        return $this->email;
-    }
-
-    /**
-     * Retrieve the email address from a EmailAddress object
-     *
-     * @return string
-     */
-    public function getEmail()
-    {
-        return $this->getEmailAddress();
-    }
-
-    /**
-     * Add a name to a EmailAddress object
-     *
-     * @param string $name The name of the person associated with the email
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setName($name)
-    {
-        if (!is_string($name)) {
-            throw new TypeException('$name must be of type string.');
-        }
-
-        /*
-            Issue #368
-            ==========
-            If the name is not wrapped in double quotes and contains a comma or
-            semicolon, the API fails to parse it correctly.
-            When wrapped in double quotes, commas, semicolons and unescaped single
-            quotes are supported.
-            Escaped double quotes are supported as well but will appear unescaped in
-            the mail (e.g. "O\'Keefe").
-            Double quotes will be shown in some email clients, so the name should
-            only be wrapped when necessary.
-        */
-        // Only wrap in double quote if comma or semicolon are found
-        if (false !== strpos($name, ',') || false !== strpos($name, ';')) {
-            // Unescape quotes
-            $name = stripslashes(html_entity_decode($name, ENT_QUOTES));
-            // Escape only double quotes
-            $name = str_replace('"', '\\"', $name);
-            // Wrap in double quotes
-            $name = '"' . $name . '"';
-        }
-        $this->name = (!empty($name)) ? $name : null;
-    }
-
-    /**
-     * Retrieve the name from a EmailAddress object
-     *
-     * @return string
-     */
-    public function getName()
-    {
-        return $this->name;
-    }
-
-    /**
-     * Add substitutions to a EmailAddress object
-     *
-     * @param array $substitutions An array of key/value substitutions to
-     *                             be be applied to the text and html content
-     *                             of the email body
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSubstitutions($substitutions)
-    {
-        if (!is_array($substitutions)) {
-            throw new TypeException('$substitutions must be an array.');
-        }
-
-        $this->substitutions = $substitutions;
-    }
-
-    /**
-     * Retrieve substitutions from a EmailAddress object
-     */
-    public function getSubstitutions()
-    {
-        return $this->substitutions;
-    }
-
-    /**
-     * Add a subject to a EmailAddress object
-     *
-     * @param string $subject The personalized subject of the email
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSubject($subject)
-    {
-        if (!is_string($subject)) {
-            throw new TypeException('$subject must be of type string.');
-        }
-        // Now that we know it is a string, we can safely create a new subject
-        $this->subject = new Subject($subject);
-    }
-
-    /**
-     * Retrieve a subject from an EmailAddress object
-     *
-     * @return Subject
-     */
-    public function getSubject()
-    {
-        return $this->subject;
-    }
-
-    /**
-     * Return an array representing an EmailAddress object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'name' => $this->getName(),
-                'email' => $this->getEmail()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Footer.php b/libs/sendgrid/lib/mail/Footer.php
deleted file mode 100644
index 04dc09b..0000000
--- a/libs/sendgrid/lib/mail/Footer.php
+++ /dev/null
@@ -1,136 +0,0 @@
-<?php
-/**
- * This helper builds the Footer object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Footer object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Footer implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-    /** @var $text string The plain text content of your footer */
-    private $text;
-    /** @var $html string The HTML content of your footer */
-    private $html;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null   $enable Indicates if this setting is enabled
-	 * @param string|null $text   The plain text content of your footer
-	 * @param string|null $html   The HTML content of your footer
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($enable = null, $text = null, $html = null)
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-        if (isset($text)) {
-            $this->setText($text);
-        }
-        if (isset($html)) {
-            $this->setHtml($html);
-        }
-    }
-
-    /**
-     * Update the enable setting on a Footer object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a Footer object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Add text to a Footer object
-     *
-     * @param string $text The plain text content of your footer
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setText($text)
-    {
-        if (!is_string($text)) {
-            throw new TypeException('$text must be of type string.');
-        }
-        $this->text = $text;
-    }
-
-    /**
-     * Retrieve text to a Footer object
-     *
-     * @return string
-     */
-    public function getText()
-    {
-        return $this->text;
-    }
-
-    /**
-     * Add html to a Footer object
-     *
-     * @param string $html The HTML content of your footer
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setHtml($html)
-    {
-        if (!is_string($html)) {
-            throw new TypeException('$html must be of type string.');
-        }
-        $this->html = $html;
-    }
-
-    /**
-     * Retrieve html from a Footer object
-     *
-     * @return string
-     */
-    public function getHtml()
-    {
-        return $this->html;
-    }
-
-    /**
-     * Return an array representing a Footer object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable(),
-                'text' => $this->getText(),
-                'html' => $this->getHtml()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/From.php b/libs/sendgrid/lib/mail/From.php
deleted file mode 100644
index 00d67b6..0000000
--- a/libs/sendgrid/lib/mail/From.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * This helper builds the From object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a From object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class From extends EmailAddress implements \JsonSerializable
-{
-}
diff --git a/libs/sendgrid/lib/mail/Ganalytics.php b/libs/sendgrid/lib/mail/Ganalytics.php
deleted file mode 100644
index 5885acd..0000000
--- a/libs/sendgrid/lib/mail/Ganalytics.php
+++ /dev/null
@@ -1,243 +0,0 @@
-<?php
-/**
- * This helper builds the Ganalytics object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Ganalytics object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Ganalytics implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-    /** @var $utm_source string Name of the referrer source. (e.g. Google, SomeDomain.com, or Marketing Email) */
-    private $utm_source;
-    /** @var $utm_medium string Name of the marketing medium. (e.g. Email) */
-    private $utm_medium;
-    /** @var $utm_term string Used to identify any paid keywords */
-    private $utm_term;
-    /** @var $utm_content string Used to differentiate your campaign from advertisements */
-    private $utm_content;
-    /** @var $utm_campaign string The name of the campaign */
-    private $utm_campaign;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null   $enable       Indicates if this setting is enabled
-	 * @param string|null $utm_source   Name of the referrer source. (e.g.
-	 *                                  Google, SomeDomain.com, or Marketing Email)
-	 * @param string|null $utm_medium   Name of the marketing medium. (e.g. Email)
-	 * @param string|null $utm_term     Used to identify any paid keywords
-	 * @param string|null $utm_content  Used to differentiate your campaign from
-	 *                                  advertisements
-	 * @param string|null $utm_campaign The name of the campaign
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct(
-        $enable = null,
-        $utm_source = null,
-        $utm_medium = null,
-        $utm_term = null,
-        $utm_content = null,
-        $utm_campaign = null
-    )
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-        if (isset($utm_source)) {
-            $this->setCampaignSource($utm_source);
-        }
-        if (isset($utm_medium)) {
-            $this->setCampaignMedium($utm_medium);
-        }
-        if (isset($utm_term)) {
-            $this->setCampaignTerm($utm_term);
-        }
-        if (isset($utm_content)) {
-            $this->setCampaignContent($utm_content);
-        }
-        if (isset($utm_campaign)) {
-            $this->setCampaignName($utm_campaign);
-        }
-    }
-
-    /**
-     * Update the enable setting on a Ganalytics object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool.');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a Ganalytics object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Add the campaign source to a Ganalytics object
-     *
-     * @param string $utm_source Name of the referrer source. (e.g.
-     *                           Google, SomeDomain.com, or Marketing Email)
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setCampaignSource($utm_source)
-    {
-        if (!is_string($utm_source)) {
-            throw new TypeException('$utm_source must be of type string.');
-        }
-        $this->utm_source = $utm_source;
-    }
-
-    /**
-     * Return the campaign source from a Ganalytics object
-     *
-     * @return string
-     */
-    public function getCampaignSource()
-    {
-        return $this->utm_source;
-    }
-
-    /**
-     * Add the campaign medium to a Ganalytics object
-     *
-     * @param string $utm_medium Name of the marketing medium. (e.g. Email)
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setCampaignMedium($utm_medium)
-    {
-        if (!is_string($utm_medium)) {
-            throw new TypeException('$utm_medium must be of type string.');
-        }
-        $this->utm_medium = $utm_medium;
-    }
-
-    /**
-     * Return the campaign medium from a Ganalytics object
-     *
-     * @return string
-     */
-    public function getCampaignMedium()
-    {
-        return $this->utm_medium;
-    }
-
-    /**
-     * Add the campaign term to a Ganalytics object
-     *
-     * @param string $utm_term Used to identify any paid keywords
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setCampaignTerm($utm_term)
-    {
-        if (!is_string($utm_term)) {
-            throw new TypeException('$utm_term must be of type string');
-        }
-        $this->utm_term = $utm_term;
-    }
-
-    /**
-     * Return the campaign term from a Ganalytics object
-     *
-     * @return string
-     */
-    public function getCampaignTerm()
-    {
-        return $this->utm_term;
-    }
-
-    /**
-     * Add the campaign content to a Ganalytics object
-     *
-     * @param string $utm_content Used to differentiate your campaign from
-     *                            advertisements
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setCampaignContent($utm_content)
-    {
-        if (!is_string($utm_content)) {
-            throw new TypeException('$utm_content must be of type string.');
-        }
-        $this->utm_content = $utm_content;
-    }
-
-    /**
-     * Return the campaign content from a Ganalytics object
-     *
-     * @return string
-     */
-    public function getCampaignContent()
-    {
-        return $this->utm_content;
-    }
-
-    /**
-     * Add the campaign name to a Ganalytics object
-     *
-     * @param string $utm_campaign The name of the campaign
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setCampaignName($utm_campaign)
-    {
-        if (!is_string($utm_campaign)) {
-            throw new TypeException('$utm_campaign must be of type string.');
-        }
-        $this->utm_campaign = $utm_campaign;
-    }
-
-    /**
-     * Return the campaign name from a Ganalytics object
-     *
-     * @return string
-     */
-    public function getCampaignName()
-    {
-        return $this->utm_campaign;
-    }
-
-    /**
-     * Return an array representing a Ganalytics object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable(),
-                'utm_source' => $this->getCampaignSource(),
-                'utm_medium' => $this->getCampaignMedium(),
-                'utm_term' => $this->getCampaignTerm(),
-                'utm_content' => $this->getCampaignContent(),
-                'utm_campaign' => $this->getCampaignName()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/GroupId.php b/libs/sendgrid/lib/mail/GroupId.php
deleted file mode 100644
index 7357fcc..0000000
--- a/libs/sendgrid/lib/mail/GroupId.php
+++ /dev/null
@@ -1,65 +0,0 @@
-<?php
-/**
- * This helper builds the GroupId object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a GroupId object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class GroupId implements \JsonSerializable
-{
-    /** @var $group_id int The unsubscribe group to associate with this email */
-    private $group_id;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param int|null $group_id The unsubscribe group to associate with this email
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($group_id = null)
-    {
-        if (isset($group_id)) {
-            $this->setGroupId($group_id);
-        }
-    }
-
-    /**
-     * Add the group id to a GroupId object
-     *
-     * @param int $group_id The unsubscribe group to associate with this email
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setGroupId($group_id)
-    {
-        if (!is_int($group_id)) {
-            throw new TypeException('$group_id must be of type int.');
-        }
-        $this->group_id = $group_id;
-    }
-
-    /**
-     * Retrieve the group id from a GroupId object
-     *
-     * @return int
-     */
-    public function getGroupId()
-    {
-        return $this->group_id;
-    }
-
-    /**
-     * Return an array representing a GroupId object for the Twilio SendGrid API
-     *
-     * @return int
-     */
-    public function jsonSerialize()
-    {
-        return $this->getGroupId();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/GroupsToDisplay.php b/libs/sendgrid/lib/mail/GroupsToDisplay.php
deleted file mode 100644
index f50341d..0000000
--- a/libs/sendgrid/lib/mail/GroupsToDisplay.php
+++ /dev/null
@@ -1,79 +0,0 @@
-<?php
-/**
- * This helper builds the GroupsToDisplay object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a GroupsToDisplay object for
- * the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class GroupsToDisplay implements \JsonSerializable
-{
-    /** @var $groups_to_display int[] An array containing the unsubscribe groups that you would like to be displayed on the unsubscribe preferences page. Maximum of 25 */
-    private $groups_to_display;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param int[]|int|null $groups_to_display An array containing
-	 *                                          the unsubscribe groups
-	 *                                          that you would like to
-	 *                                          be displayed on the
-	 *                                          unsubscribe preferences
-	 *                                          page. Maximum of 25
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($groups_to_display = null)
-    {
-        if (isset($groups_to_display)) {
-            $this->setGroupsToDisplay($groups_to_display);
-        }
-    }
-
-    /**
-     * Add a group to display on a GroupsToDisplay object
-     *
-     * @param int|int[] $groups_to_display The unsubscribe group(s)
-     *                                     that you would like to be
-     *                                     displayed on the unsubscribe
-     *                                     preferences page
-     *
-     * @throws \SendGrid\Mail\TypeException
-     * @return null
-     */
-    public function setGroupsToDisplay($groups_to_display)
-    {
-        if (!is_array($groups_to_display)) {
-            throw new TypeException('$groups_to_display must be an array.');
-        }
-        if (is_array($groups_to_display)) {
-            $this->groups_to_display = $groups_to_display;
-        } else {
-            $this->groups_to_display[] = $groups_to_display;
-        }
-    }
-
-    /**
-     * Return the group(s) to display on a GroupsToDisplay object
-     *
-     * @return int[]
-     */
-    public function getGroupsToDisplay()
-    {
-        return $this->groups_to_display;
-    }
-
-    /**
-     * Return an array representing a GroupsToDisplay object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return $this->getGroupsToDisplay();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Header.php b/libs/sendgrid/lib/mail/Header.php
deleted file mode 100644
index 4daef21..0000000
--- a/libs/sendgrid/lib/mail/Header.php
+++ /dev/null
@@ -1,108 +0,0 @@
-<?php
-/**
- * This helper builds the Header object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Header object for the /mail/send API call
- *
- * An object containing key/value pairs of header names and the value to substitute
- * for them. You must ensure these are properly encoded if they contain unicode
- * characters. Must not be one of the reserved headers
- *
- * @package SendGrid\Mail
- */
-class Header implements \JsonSerializable
-{
-    /** @var $key string Header key */
-    private $key;
-    /** @var $value string Header value */
-    private $value;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $key   Header key
-	 * @param string|null $value Header value
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($key = null, $value = null)
-    {
-        if (isset($key)) {
-            $this->setKey($key);
-        }
-        if (isset($value)) {
-            $this->setValue($value);
-        }
-    }
-
-    /**
-     * Add the key on a Header object
-     *
-     * @param string $key Header key
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setKey($key)
-    {
-        if (!is_string($key)) {
-            throw new TypeException('$key must be of type string.');
-        }
-        $this->key = $key;
-    }
-
-    /**
-     * Retrieve the key from a Header object
-     *
-     * @return string
-     */
-    public function getKey()
-    {
-        return $this->key;
-    }
-
-    /**
-     * Add the value on a Header object
-     *
-     * @param string $value Header value
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setValue($value)
-    {
-        if (!is_string($value)) {
-            throw new TypeException('$value must be of type string.');
-        }
-        $this->value = $value;
-    }
-
-    /**
-     * Retrieve the value from a Header object
-     *
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->value;
-    }
-
-    /**
-     * Return an array representing a Header object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'key' => $this->getKey(),
-                'value' => $this->getValue()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/HtmlContent.php b/libs/sendgrid/lib/mail/HtmlContent.php
deleted file mode 100644
index 1d898a3..0000000
--- a/libs/sendgrid/lib/mail/HtmlContent.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-/**
- * This helper builds the Content object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Content object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class HtmlContent extends Content
-{
-    /**
-     * Create a Content object with a HTML mime type
-     *
-     * @param string $value HTML formatted content
-     */
-    public function __construct($value)
-    {
-        parent::__construct(MimeType::HTML, $value);
-    }
-}
diff --git a/libs/sendgrid/lib/mail/IpPoolName.php b/libs/sendgrid/lib/mail/IpPoolName.php
deleted file mode 100644
index 28513a6..0000000
--- a/libs/sendgrid/lib/mail/IpPoolName.php
+++ /dev/null
@@ -1,69 +0,0 @@
-<?php
-/**
- * This helper builds the IpPoolName object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a IpPoolName object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class IpPoolName implements \JsonSerializable
-{
-    /** @var $ip_pool_name string The IP Pool that you would like to send this email from. Minimum length: 2, Maximum Length: 64 */
-    private $ip_pool_name;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $ip_pool_name The IP Pool that you would like to
-	 *                                  send this email from. Minimum length:
-	 *                                  2, Maximum Length: 64
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($ip_pool_name = null)
-    {
-        if (isset($ip_pool_name)) {
-            $this->setIpPoolName($ip_pool_name);
-        }
-    }
-
-    /**
-     * Set the ip pool name on a IpPoolName object
-     *
-     * @param string $ip_pool_name The IP Pool that you would like to
-     *                             send this email from. Minimum length:
-     *                             2, Maximum Length: 64
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setIpPoolName($ip_pool_name)
-    {
-        if (!is_string($ip_pool_name)) {
-            throw new TypeException('$ip_pool_name must be of type string.');
-        }
-        $this->ip_pool_name = $ip_pool_name;
-    }
-
-    /**
-     * Retrieve the ip pool name from a IpPoolName object
-     *
-     * @return string
-     */
-    public function getIpPoolName()
-    {
-        return $this->ip_pool_name;
-    }
-
-    /**
-     * Return an array representing a IpPoolName object for the Twilio SendGrid API
-     *
-     * @return string
-     */
-    public function jsonSerialize()
-    {
-        return $this->getIpPoolName();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Mail.php b/libs/sendgrid/lib/mail/Mail.php
deleted file mode 100644
index 392bb8d..0000000
--- a/libs/sendgrid/lib/mail/Mail.php
+++ /dev/null
@@ -1,1792 +0,0 @@
-<?php
-/**
- * This helper builds the request body for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a request body for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Mail implements \JsonSerializable
-{
-    /** @var $from From Email address of the sender */
-    private $from;
-
-    /** @var $subject Subject Subject of the email */
-    private $subject;
-
-    /** @var $contents Content[] Content(s) of the email */
-    private $contents;
-
-    /** @var $attachments Attachment[] Email attachments */
-    private $attachments;
-
-    /** @var $template_id TemplateId Id of a template that you would like to use */
-    private $template_id;
-
-    /** @var $sections Section[] Key/value pairs that define block sections of code to be used as substitutions */
-    private $sections;
-
-    /** @var $headers Header[] Header names and the value to substitute for them */
-    private $headers;
-
-    /** @var $categories Category[] Category names for this message */
-    private $categories;
-
-    /** @var $custom_args CustomArg[] Values that are specific to the entire send that will be carried along with the email and its activity data */
-    private $custom_args;
-
-    /** @var $substitutions Substitution[] Substitutions that will apply to the text and html content of the body of your email, in addition to the subject and reply-to parameters */
-    private $substitutions;
-
-    /** @var $send_at SendAt A unix timestamp allowing you to specify when you want your email to be delivered */
-    private $send_at;
-
-    /** @var $batch_id BatchId This ID represents a batch of emails to be sent at the same time */
-    private $batch_id;
-
-    /** @var $asm ASM Specifies how to handle unsubscribes */
-    private $asm;
-
-    /** @var $ip_pool_name IpPoolName The IP Pool that you would like to send this email from */
-    private $ip_pool_name;
-
-    /** @var $mail_settings MailSettings A collection of different mail settings that you can use to specify how you would like this email to be handled */
-    private $mail_settings;
-
-    /** @var $tracking_settings TrackingSettings Settings to determine how you would like to track the metrics of how your recipients interact with your email */
-    private $tracking_settings;
-
-    /** @var $reply_to ReplyTo Email to be use when replied to */
-    private $reply_to;
-
-    /** @var $personalization Personalization[] Messages and their metadata */
-    private $personalization;
-
-    const   VERSION = "7.0.0";
-
-	/**
-	 * If passing parameters into this constructor include
-	 * $from, $to, $subject, $plainTextContent and
-	 * $htmlContent at a minimum. In that case, a Personalization
-	 * object will be created for you.
-	 *
-	 * @param From|null              $from                Email address of the sender
-	 * @param To|To[]|null           $to                  Recipient(s) email
-	 *                                                    address(es)
-	 * @param Subject|Subject[]|null $subject             Subject(s)
-	 * @param PlainTextContent|null  $plainTextContent    Plain text version of
-	 *                                                    content
-	 * @param HtmlContent|null       $htmlContent         Html version of content
-	 * @param Substitution[]|null    $globalSubstitutions Substitutions for entire
-	 *                                                    email
-	 * @throws TypeException
-	 */
-    public function __construct(
-        $from = null,
-        $to = null,
-        $subject = null,
-        $plainTextContent = null,
-        $htmlContent = null,
-        array $globalSubstitutions = null
-    ) {
-        if (!isset($from)
-            && !isset($to)
-            && !isset($subject)
-            && !isset($plainTextContent)
-            && !isset($htmlContent)
-            && !isset($globalSubstitutions)
-        ) {
-            $this->personalization[] = new Personalization();
-            return;
-        }
-        if (isset($from)) {
-            $this->setFrom($from);
-        }
-        if (isset($to)) {
-            if (!is_array($to)) {
-                $to = [$to];
-            }
-            $subjectCount = 0;
-            $personalization = new Personalization();
-            foreach ($to as $email) {
-                if ($email->getSubstitutions()) {
-                    $personalization = new Personalization();
-                }
-                $personalization->addTo($email);
-                if ($subs = $email->getSubstitutions()) {
-                    foreach ($subs as $key => $value) {
-                        $personalization->addSubstitution($key, $value);
-                    }
-                }
-                if ($email->getSubject()) {
-                    $personalization->setSubject($email->getSubject());
-                }
-                if (is_array($subject)) {
-                    if ($subjectCount < sizeof($subject)) {
-                        $personalization->setSubject($subject[$subjectCount]);
-                    }
-                    $subjectCount++;
-                }
-                if (is_array($globalSubstitutions)) {
-                    foreach ($globalSubstitutions as $key => $value) {
-                        $personalization->addSubstitution($key, $value);
-                    }
-                }
-                if ($email->getSubstitutions()) {
-                    $this->addPersonalization($personalization);
-                }
-            }
-            if (isset($email) && !$email->getSubstitutions()) {
-                $this->addPersonalization($personalization);
-            }
-        }
-        if (isset($subject) && !is_array($subject)) {
-            $this->setSubject($subject);
-        }
-        if (isset($plainTextContent)) {
-            $this->addContent($plainTextContent);
-        }
-        if (isset($htmlContent)) {
-            $this->addContent($htmlContent);
-        }
-    }
-
-    /**
-     * Adds a To, Cc or Bcc object to a Personalization object
-     *
-     * @param string $emailType Object type name: To, Cc or Bcc
-     * @param string $email Recipient email address
-     * @param string|null $name Recipient name
-     * @param Substitution[]|array|null $substitutions Personalized
-     *                                                 substitutions
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    private function addRecipientEmail(
-        $emailType,
-        $email,
-        $name = null,
-        $substitutions = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $personalizationFunctionCall = 'add' . $emailType;
-        $emailType = '\SendGrid\Mail\\' . $emailType;
-        if (!($email instanceof $emailType)) {
-            $email = new $emailType(
-                $email,
-                $name,
-                $substitutions
-            );
-        }
-
-        $personalization = $this->getPersonalization($personalizationIndex, $personalization);
-        $personalization->$personalizationFunctionCall($email);
-
-        if ($subs = $email->getSubstitutions()) {
-            foreach ($subs as $key => $value) {
-                $personalization->addSubstitution($key, $value);
-            }
-        }
-    }
-
-    /**
-     * Adds an array of To, Cc or Bcc objects to a Personalization object
-     *
-     * @param string $emailType Object type name: To, Cc  or Bcc
-     * @param To[]|Cc[]|Bcc[] $emails Array of email recipients
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    private function addRecipientEmails(
-        $emailType,
-        $emails,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $emailFunctionCall = 'add' . $emailType;
-
-        if (current($emails) instanceof EmailAddress) {
-            foreach ($emails as $email) {
-                $this->$emailFunctionCall(
-                    $email,
-                    $name = null,
-                    $personalizationIndex,
-                    $personalization
-                );
-            }
-        } else {
-            foreach ($emails as $email => $name) {
-                $this->$emailFunctionCall(
-                    $email,
-                    $name,
-                    $personalizationIndex,
-                    $personalization
-                );
-            }
-        }
-    }
-
-    /**
-     * Add a Personalization object to the Mail object
-     *
-     * @param Personalization $personalization A Personalization object
-     */
-    public function addPersonalization($personalization)
-    {
-        $this->personalization[] = $personalization;
-    }
-
-    /**
-     * Retrieves a Personalization object, adds a pre-created Personalization
-     * object, or creates and adds a Personalization object.
-     *
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @return Personalization
-     */
-    public function getPersonalization($personalizationIndex = null, $personalization = null)
-    {
-        if ($personalization !== null) {
-            $this->addPersonalization($personalization);
-        } else if ($personalizationIndex !== null) {
-            if ($personalizationIndex >= $this->getPersonalizationCount()) {
-                throw new \InvalidArgumentException(
-                    'personalizationIndex ' . $personalizationIndex .
-                    ' must be less than ' . $this->getPersonalizationCount());
-            }
-
-            $personalization = $this->personalization[$personalizationIndex];
-        } else if ($this->getPersonalizationCount() === 0) {
-            $personalization = new Personalization();
-            $this->addPersonalization($personalization);
-        } else {
-            $personalization = \end($this->personalization);
-        }
-
-        return $personalization;
-    }
-
-    /**
-     * Retrieve a Personalization object from the Mail object
-     *
-     * @return Personalization[]
-     */
-    public function getPersonalizations()
-    {
-        return $this->personalization;
-    }
-
-    /**
-     * Retrieve the number of Personalization objects associated with the Mail object
-     *
-     * @return int
-     */
-    public function getPersonalizationCount()
-    {
-        return isset($this->personalization) ? count($this->personalization) : 0;
-    }
-
-    /**
-     * Adds an email recipient to a Personalization object
-     *
-     * @param string|To $to Email address or To object
-     * @param string $name Recipient name
-     * @param array|Substitution[] $substitutions Personalized substitutions
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    public function addTo(
-        $to,
-        $name = null,
-        $substitutions = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if ($to instanceof To) {
-            $name = $to->getName();
-            $substitutions = $to->getSubstitutions();
-            $to = $to->getEmailAddress();
-        }
-        $this->addRecipientEmail(
-            'To',
-            $to,
-            $name,
-            $substitutions,
-            $personalizationIndex,
-            $personalization
-        );
-    }
-
-    /**
-     * Adds multiple email recipients to a Personalization object
-     *
-     * @param To[]|array $toEmails Array of To objects or key/value pairs of
-     *                             email address/recipient names
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    public function addTos(
-        $toEmails,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $this->addRecipientEmails(
-            'To',
-            $toEmails,
-            $personalizationIndex,
-            $personalization
-        );
-    }
-
-    /**
-     * Adds an email cc recipient to a Personalization object
-     *
-     * @param string|Cc $cc Email address or Cc object
-     * @param string $name Recipient name
-     * @param Substitution[]|array|null $substitutions Personalized
-     *                                                 substitutions
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    public function addCc(
-        $cc,
-        $name = null,
-        $substitutions = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if ($cc instanceof Cc) {
-            $name = $cc->getName();
-            $cc = $cc->getEmailAddress();
-        }
-        $this->addRecipientEmail(
-            'Cc',
-            $cc,
-            $name,
-            $substitutions,
-            $personalizationIndex,
-            $personalization
-        );
-    }
-
-    /**
-     * Adds multiple email cc recipients to a Personalization object
-     *
-     * @param Cc[]|array $ccEmails Array of Cc objects or key/value pairs of
-     *                             email address/recipient names
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    public function addCcs(
-        $ccEmails,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $this->addRecipientEmails(
-            'Cc',
-            $ccEmails,
-            $personalizationIndex,
-            $personalization
-        );
-    }
-
-    /**
-     * Adds an email bcc recipient to a Personalization object
-     *
-     * @param string|Bcc $bcc Email address or Bcc object
-     * @param string $name Recipient name
-     * @param Substitution[]|array|null $substitutions Personalized
-     *                                                 substitutions
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    public function addBcc(
-        $bcc,
-        $name = null,
-        $substitutions = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if ($bcc instanceof Bcc) {
-            $name = $bcc->getName();
-            $bcc = $bcc->getEmailAddress();
-        }
-        $this->addRecipientEmail(
-            'Bcc',
-            $bcc,
-            $name,
-            $substitutions,
-            $personalizationIndex,
-            $personalization
-        );
-    }
-
-    /**
-     * Adds multiple email bcc recipients to a Personalization object
-     *
-     * @param Bcc[]|array $bccEmails Array of Bcc objects or key/value pairs of
-     *                               email address/recipient names
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     */
-    public function addBccs(
-        $bccEmails,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $this->addRecipientEmails(
-            'Bcc',
-            $bccEmails,
-            $personalizationIndex,
-            $personalization
-        );
-    }
-
-	/**
-	 * Add a subject to a Personalization or Mail object
-	 *
-	 * If you don't provide a Personalization object or index, the
-	 * subject will be global to entire message. Note that
-	 * subjects added to Personalization objects override
-	 * global subjects.
-	 *
-	 * @param string|Subject $subject Email subject
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-	 * @throws TypeException
-	 */
-    public function setSubject(
-        $subject,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if (!($subject instanceof Subject)) {
-            $subject = new Subject($subject);
-        }
-
-        if ($personalization !== null) {
-            $personalization->setSubject($subject);
-            $this->addPersonalization($personalization);
-            return;
-        }
-        if ($personalizationIndex !== null) {
-            $this->personalization[$personalizationIndex]->setSubject($subject);
-            return;
-        }
-        $this->setGlobalSubject($subject);
-    }
-
-    /**
-     * Retrieve a subject attached to a Personalization object
-     *
-     * @param int|0 $personalizationIndex Index into the array of existing
-     *                                    Personalization objects
-     * @return Subject
-     */
-    public function getSubject($personalizationIndex = 0)
-    {
-        return $this->personalization[$personalizationIndex]->getSubject();
-    }
-
-    /**
-     * Add a header to a Personalization or Mail object
-     *
-     * If you don't provide a Personalization object or index, the
-     * header will be global to entire message. Note that
-     * headers added to Personalization objects override
-     * global headers.
-     *
-     * @param string|Header $key Key or Header object
-     * @param string|null $value Value
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addHeader(
-        $key,
-        $value = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $header = null;
-        if ($key instanceof Header) {
-            $h = $key;
-            $header = new Header($h->getKey(), $h->getValue());
-        } else {
-            $header = new Header($key, $value);
-        }
-
-        $personalization = $this->getPersonalization($personalizationIndex, $personalization);
-        $personalization->addHeader($header);
-    }
-
-    /**
-     * Adds multiple headers to a Personalization or Mail object
-     *
-     * If you don't provide a Personalization object or index, the
-     * header will be global to entire message. Note that
-     * headers added to Personalization objects override
-     * global headers.
-     *
-     * @param array|Header[] $headers Array of Header objects or key values
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addHeaders(
-        $headers,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if (current($headers) instanceof Header) {
-            foreach ($headers as $header) {
-                $this->addHeader($header);
-            }
-        } else {
-            foreach ($headers as $key => $value) {
-                $this->addHeader(
-                    $key,
-                    $value,
-                    $personalizationIndex,
-                    $personalization
-                );
-            }
-        }
-    }
-
-    /**
-     * Retrieve the headers attached to a Personalization object
-     *
-     * @param int|0 $personalizationIndex Index into the array of existing
-     *                                    Personalization objects
-     * @return Header[]
-     */
-    public function getHeaders($personalizationIndex = 0)
-    {
-        return $this->personalization[$personalizationIndex]->getHeaders();
-    }
-
-    /**
-     * Add a DynamicTemplateData object or key/value to a Personalization object
-     *
-     * @param DynamicTemplateData|string $key DynamicTemplateData object or the key of a
-     *                                         dynamic data
-     * @param string|null $value Value
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addDynamicTemplateData(
-        $key,
-        $value = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $this->addSubstitution($key, $value, $personalizationIndex, $personalization);
-    }
-
-    /**
-     * Add a DynamicTemplateData object or key/value to a Personalization object
-     *
-     * @param array|DynamicTemplateData[] $datas Array of DynamicTemplateData
-     *                                           objects or key/values
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addDynamicTemplateDatas(
-        $datas,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $this->addSubstitutions($datas, $personalizationIndex, $personalization);
-    }
-
-    /**
-     * Retrieve dynamic template data key/value pairs from a Personalization object
-     *
-     * @param int|0 $personalizationIndex Index into the array of existing
-     *                                    Personalization objects
-     * @return array
-     */
-    public function getDynamicTemplateDatas($personalizationIndex = 0)
-    {
-        return $this->getSubstitutions($personalizationIndex);
-    }
-
-    /**
-     * Add a substitution to a Personalization or Mail object
-     *
-     * If you don't provide a Personalization object or index, the
-     * substitution will be global to entire message. Note that
-     * substitutions added to Personalization objects override
-     * global substitutions.
-     *
-     * @param string|Substitution $key Key or Substitution object
-     * @param string|null $value Value
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addSubstitution(
-        $key,
-        $value = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $substitution = null;
-        if ($key instanceof Substitution) {
-            $s = $key;
-            $substitution = new Substitution($s->getKey(), $s->getValue());
-        } else {
-            $substitution = new Substitution($key, $value);
-        }
-
-        $personalization = $this->getPersonalization($personalizationIndex, $personalization);
-        $personalization->addSubstitution($substitution);
-    }
-
-    /**
-     * Adds multiple substitutions to a Personalization or Mail object
-     *
-     * If you don't provide a Personalization object or index, the
-     * substitution will be global to entire message. Note that
-     * substitutions added to Personalization objects override
-     * global headers.
-     *
-     * @param array|Substitution[] $substitutions Array of Substitution
-     *                                            objects or key/values
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addSubstitutions(
-        $substitutions,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if (current($substitutions) instanceof Substitution) {
-            foreach ($substitutions as $substitution) {
-                $this->addSubstitution($substitution);
-            }
-        } else {
-            foreach ($substitutions as $key => $value) {
-                $this->addSubstitution(
-                    $key,
-                    $value,
-                    $personalizationIndex,
-                    $personalization
-                );
-            }
-        }
-    }
-
-    /**
-     * Retrieve the substitutions attached to a Personalization object
-     *
-     * @param int|0 $personalizationIndex Index into the array of existing
-     *                                    Personalization objects
-     * @return Substitution[]
-     */
-    public function getSubstitutions($personalizationIndex = 0)
-    {
-        return $this->personalization[$personalizationIndex]->getSubstitutions();
-    }
-
-    /**
-     * Add a custom arg to a Personalization or Mail object
-     *
-     * Note that custom args added to Personalization objects
-     * override global custom args.
-     *
-     * @param string|CustomArg $key Key or CustomArg object
-     * @param string|null $value Value
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addCustomArg(
-        $key,
-        $value = null,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        $custom_arg = null;
-        if ($key instanceof CustomArg) {
-            $ca = $key;
-            $custom_arg = new CustomArg($ca->getKey(), $ca->getValue());
-        } else {
-            $custom_arg = new CustomArg($key, $value);
-        }
-
-        $personalization = $this->getPersonalization($personalizationIndex, $personalization);
-        $personalization->addCustomArg($custom_arg);
-    }
-
-    /**
-     * Adds multiple custom args to a Personalization or Mail object
-     *
-     * If you don't provide a Personalization object or index, the
-     * custom arg will be global to entire message. Note that
-     * custom args added to Personalization objects override
-     * global custom args.
-     *
-     * @param array|CustomArg[] $custom_args Array of CustomArg objects or
-     *                                       key/values
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-     * @throws TypeException
-     */
-    public function addCustomArgs(
-        $custom_args,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if (current($custom_args) instanceof CustomArg) {
-            foreach ($custom_args as $custom_arg) {
-                $this->addCustomArg($custom_arg);
-            }
-        } else {
-            foreach ($custom_args as $key => $value) {
-                $this->addCustomArg(
-                    $key,
-                    $value,
-                    $personalizationIndex,
-                    $personalization
-                );
-            }
-        }
-    }
-
-    /**
-     * Retrieve the custom args attached to a Personalization object
-     *
-     * @param int|0 $personalizationIndex Index into the array of existing
-     *                                    Personalization objects
-     * @return CustomArg[]
-     */
-    public function getCustomArgs($personalizationIndex = 0)
-    {
-        return $this->personalization[$personalizationIndex]->getCustomArgs();
-    }
-
-	/**
-	 * Add a unix timestamp allowing you to specify when you want your
-	 * email to be delivered to a Personalization or Mail object
-	 *
-	 * If you don't provide a Personalization object or index, the
-	 * send at timestamp will be global to entire message. Note that
-	 * timestamps added to Personalization objects override
-	 * global timestamps.
-	 *
-	 * @param int|SendAt $send_at A unix timestamp
-     * @param int|null $personalizationIndex Index into the array of existing
-     *                                       Personalization objects
-     * @param Personalization|null $personalization A pre-created
-     *                                              Personalization object
-	 * @throws TypeException
-	 */
-    public function setSendAt(
-        $send_at,
-        $personalizationIndex = null,
-        $personalization = null
-    ) {
-        if (!($send_at instanceof SendAt)) {
-            $send_at = new SendAt($send_at);
-        }
-
-        $personalization = $this->getPersonalization($personalizationIndex, $personalization);
-        $personalization->setSendAt($send_at);
-    }
-
-    /**
-     * Retrieve the unix timestamp attached to a Personalization object
-     *
-     * @param int|0 $personalizationIndex Index into the array of existing
-     *                                    Personalization objects
-     * @return SendAt
-     */
-    public function getSendAt($personalizationIndex = 0)
-    {
-        return $this->personalization[$personalizationIndex]->getSendAt();
-    }
-
-    /**
-     * Add the sender email address to a Mail object
-     *
-     * @param string|From $email Email address or From object
-     * @param string|null $name  Sender name
-     * @throws TypeException
-     */
-    public function setFrom($email, $name = null)
-    {
-        if ($email instanceof From) {
-            $this->from = $email;
-        } else if (
-            is_string($email) && filter_var($email, FILTER_VALIDATE_EMAIL)
-        ) {
-            $this->from = new From($email, $name);
-        } else {
-            throw new TypeException('$email must be valid and of type string.');
-        }
-    }
-
-    /**
-     * Retrieve the sender attached to a Mail object
-     *
-     * @return From
-     */
-    public function getFrom()
-    {
-        return $this->from;
-    }
-
-    /**
-     * Add the reply to email address to a Mail object
-     *
-     * @param string|ReplyTo $email Email address or From object
-     * @param string|null $name Reply to name
-     * @throws TypeException
-     */
-    public function setReplyTo($email, $name = null)
-    {
-        if ($email instanceof ReplyTo) {
-            $this->reply_to = $email;
-        } else {
-            $this->reply_to = new ReplyTo($email, $name);
-        }
-    }
-
-    /**
-     * Retrieve the reply to information attached to a Mail object
-     *
-     * @return ReplyTo
-     */
-    public function getReplyTo()
-    {
-        return $this->reply_to;
-    }
-
-    /**
-     * Add a subject to a Mail object
-     *
-     * Note that
-     * subjects added to Personalization objects override
-     * global subjects.
-     *
-     * @param string|Subject $subject Email subject
-     * @throws TypeException
-     */
-    public function setGlobalSubject($subject)
-    {
-        if (!($subject instanceof Subject)) {
-            $subject = new Subject($subject);
-        }
-        $this->subject = $subject;
-    }
-
-    /**
-     * Retrieve a subject attached to a Mail object
-     *
-     * @return Subject
-     */
-    public function getGlobalSubject()
-    {
-        return $this->subject;
-    }
-
-    /**
-     * Add content to a Mail object
-     *
-     * For a list of pre-configured mime types, please see
-     * MimeType.php
-     *
-     * @param string|Content $type Mime type or Content object
-     * @param string|null $value Contents (e.g. text or html)
-     * @throws TypeException
-     */
-    public function addContent($type, $value = null)
-    {
-        if ($type instanceof Content) {
-            $content = $type;
-        } else {
-            $content = new Content($type, $value);
-        }
-        $this->contents[] = $content;
-    }
-
-    /**
-     * Adds multiple Content objects to a Mail object
-     *
-     * @param array|Content[] $contents Array of Content objects
-     *                                  or key value pairs
-     * @throws TypeException
-     */
-    public function addContents($contents)
-    {
-        if (current($contents) instanceof Content) {
-            foreach ($contents as $content) {
-                $this->addContent($content);
-            }
-        } else {
-            foreach ($contents as $key => $value) {
-                $this->addContent($key, $value);
-            }
-        }
-    }
-
-    /**
-     * Retrieve the contents attached to a Mail object
-     *
-     * Will return array of Content Objects with text/plain MimeType first
-     * Array re-ordered before return where this is not already the case
-     *
-     * @return Content[]
-     */
-    public function getContents()
-    {
-        if ($this->contents) {
-            if ($this->contents[0]->getType() !== 'text/plain'
-            && count($this->contents) > 1
-            ) {
-                foreach ($this->contents as $key => $value) {
-                    if ($value->getType() == 'text/plain') {
-                        $plain_content = $value;
-                        unset($this->contents[$key]);
-                        break;
-                    }
-                }
-                if (isset($plain_content)) {
-                    array_unshift($this->contents, $plain_content);
-                }
-            }
-        }
-
-        return $this->contents;
-    }
-
-    /**
-     * Add an attachment to a Mail object
-     *
-     * @param string|Attachment $attachment Attachment object or
-     *                                       Base64 encoded content
-     * @param string|null $type Mime type of the attachment
-     * @param string|null $filename File name of the attachment
-     * @param string|null $disposition How the attachment should be
-     *                                       displayed: inline or attachment
-     *                                       default is attachment
-     * @param string|null $content_id Used when disposition is inline
-     *                                       to display the file within the
-     *                                       body of the email
-     * @throws TypeException
-     */
-    public function addAttachment(
-        $attachment,
-        $type = null,
-        $filename = null,
-        $disposition = null,
-        $content_id = null
-    ) {
-        if (is_array($attachment)) {
-            $attachment = new Attachment(
-                $attachment[0],
-                $attachment[1],
-                $attachment[2],
-                $attachment[3],
-                $attachment[4]
-            );
-        } else if (!($attachment instanceof Attachment)) {
-            $attachment = new Attachment(
-                $attachment,
-                $type,
-                $filename,
-                $disposition,
-                $content_id
-            );
-        }
-        $this->attachments[] = $attachment;
-    }
-
-    /**
-     * Adds multiple attachments to a Mail object
-     *
-     * @param array|Attachment[] $attachments Array of Attachment objects or
-     *                                        arrays
-     * @throws TypeException
-     */
-    public function addAttachments($attachments)
-    {
-        foreach ($attachments as $attachment) {
-            $this->addAttachment($attachment);
-        }
-    }
-
-    /**
-     * Retrieve the attachments attached to a Mail object
-     *
-     * @return Attachment[]
-     */
-    public function getAttachments()
-    {
-        return $this->attachments;
-    }
-
-    /**
-     * Add a template id to a Mail object
-     *
-     * @param string $template_id The id of the template to be
-     *                            appied to this email
-     * @throws TypeException
-     */
-    public function setTemplateId($template_id)
-    {
-        if (!($template_id instanceof TemplateId)) {
-            $template_id = new TemplateId($template_id);
-        }
-
-        $this->template_id = $template_id;
-    }
-
-    /**
-     * Retrieve a template id attached to a Mail object
-     *
-     * @return TemplateId
-     */
-    public function getTemplateId()
-    {
-        return $this->template_id;
-    }
-
-    /**
-     * Add a section to a Mail object
-     *
-     * @param string|Section $key Key or Section object
-     * @param string|null $value Value
-     */
-    public function addSection($key, $value = null)
-    {
-        if ($key instanceof Section) {
-            $section = $key;
-            $this->sections[$section->getKey()]
-                = $section->getValue();
-            return;
-        }
-        $this->sections[$key] = (string)$value;
-    }
-
-    /**
-     * Adds multiple sections to a Mail object
-     *
-     * @param array|Section[] $sections Array of CustomArg objects
-     *                                  or key/values
-     */
-    public function addSections($sections)
-    {
-        if (current($sections) instanceof Section) {
-            foreach ($sections as $section) {
-                $this->addSection($section);
-            }
-        } else {
-            foreach ($sections as $key => $value) {
-                $this->addSection($key, $value);
-            }
-        }
-    }
-
-    /**
-     * Retrieve the section(s) attached to a Mail object
-     *
-     * @return Section[]
-     */
-    public function getSections()
-    {
-        return $this->sections;
-    }
-
-    /**
-     * Add a header to a Mail object
-     *
-     * Note that headers added to Personalization objects override
-     * global headers.
-     *
-     * @param string|Header $key Key or Header object
-     * @param string|null $value Value
-     */
-    public function addGlobalHeader($key, $value = null)
-    {
-        if ($key instanceof Header) {
-            $header = $key;
-            $this->headers[$header->getKey()]
-                = $header->getValue();
-            return;
-        }
-        $this->headers[$key] = (string)$value;
-    }
-
-    /**
-     * Adds multiple headers to a Mail object
-     *
-     * Note that headers added to Personalization objects override
-     * global headers.
-     *
-     * @param array|Header[] $headers Array of Header objects
-     *                                or key values
-     */
-    public function addGlobalHeaders($headers)
-    {
-        if (current($headers) instanceof Header) {
-            foreach ($headers as $header) {
-                $this->addGlobalHeader($header);
-            }
-        } else {
-            foreach ($headers as $key => $value) {
-                $this->addGlobalHeader($key, $value);
-            }
-        }
-    }
-
-    /**
-     * Retrieve the headers attached to a Mail object
-     *
-     * @return Header[]
-     */
-    public function getGlobalHeaders()
-    {
-        return $this->headers;
-    }
-
-    /**
-     * Add a substitution to a Mail object
-     *
-     * Note that substitutions added to Personalization objects override
-     * global substitutions.
-     *
-     * @param string|Substitution $key Key or Substitution object
-     * @param string|null $value Value
-     */
-    public function addGlobalSubstitution($key, $value = null)
-    {
-        if ($key instanceof Substitution) {
-            $substitution = $key;
-            $this->substitutions[$substitution->getKey()]
-                = $substitution->getValue();
-            return;
-        }
-        $this->substitutions[$key] = $value;
-    }
-
-    /**
-     * Adds multiple substitutions to a Mail object
-     *
-     * Note that substitutions added to Personalization objects override
-     * global headers.
-     *
-     * @param array|Substitution[] $substitutions Array of Substitution
-     *                                            objects or key/values
-     */
-    public function addGlobalSubstitutions($substitutions)
-    {
-        if (current($substitutions) instanceof Substitution) {
-            foreach ($substitutions as $substitution) {
-                $this->addGlobalSubstitution($substitution);
-            }
-        } else {
-            foreach ($substitutions as $key => $value) {
-                $this->addGlobalSubstitution($key, $value);
-            }
-        }
-    }
-
-    /**
-     * Retrieve the substitutions attached to a Mail object
-     *
-     * @return Substitution[]
-     */
-    public function getGlobalSubstitutions()
-    {
-        return $this->substitutions;
-    }
-
-    /**
-     * Add a category to a Mail object
-     *
-     * @param string|Category $category Category object or category name
-     * @throws TypeException
-     */
-    public function addCategory($category)
-    {
-        if (!($category instanceof Category)) {
-            $category = new Category($category);
-        }
-        $this->categories[] = $category;
-    }
-
-    /**
-     * Adds multiple categories to a Mail object
-     *
-     * @param array|Category[] $categories Array of Category objects or arrays
-     * @throws TypeException
-     */
-    public function addCategories($categories)
-    {
-        foreach ($categories as $category) {
-            $this->addCategory($category);
-        }
-    }
-
-    /**
-     * Retrieve the categories attached to a Mail object
-     *
-     * @return Category[]
-     */
-    public function getCategories()
-    {
-        return $this->categories;
-    }
-
-    /**
-     * Add a custom arg to a Mail object
-     *
-     * Note that custom args added to Personalization objects override
-     * global custom args.
-     *
-     * @param string|CustomArg $key Key or CustomArg object
-     * @param string|null $value Value
-     */
-    public function addGlobalCustomArg($key, $value = null)
-    {
-        if ($key instanceof CustomArg) {
-            $custom_arg = $key;
-            $this->custom_args[$custom_arg->getKey()]
-                = $custom_arg->getValue();
-            return;
-        }
-        $this->custom_args[$key] = (string)$value;
-    }
-
-    /**
-     * Adds multiple custom args to a Mail object
-     *
-     * Note that custom args added to Personalization objects override
-     * global custom args.
-     *
-     * @param array|CustomArg[] $custom_args Array of CustomArg objects
-     *                                       or key/values
-     */
-    public function addGlobalCustomArgs($custom_args)
-    {
-        if (current($custom_args) instanceof CustomArg) {
-            foreach ($custom_args as $custom_arg) {
-                $this->addGlobalCustomArg($custom_arg);
-            }
-        } else {
-            foreach ($custom_args as $key => $value) {
-                $this->addGlobalCustomArg($key, $value);
-            }
-        }
-    }
-
-    /**
-     * Retrieve the custom args attached to a Mail object
-     *
-     * @return CustomArg[]
-     */
-    public function getGlobalCustomArgs()
-    {
-        return $this->custom_args;
-    }
-
-    /**
-     * Add a unix timestamp allowing you to specify when you want your
-     * email to be delivered to a Mail object
-     *
-     * Note that timestamps added to Personalization objects override
-     * global timestamps.
-     *
-     * @param int|SendAt $send_at A unix timestamp
-     * @throws TypeException
-     */
-    public function setGlobalSendAt($send_at)
-    {
-        if (!($send_at instanceof SendAt)) {
-            $send_at = new SendAt($send_at);
-        }
-        $this->send_at = $send_at;
-    }
-
-    /**
-     * Retrieve the unix timestamp attached to a Mail object
-     *
-     * @return SendAt
-     */
-    public function getGlobalSendAt()
-    {
-        return $this->send_at;
-    }
-
-    /**
-     * Add a batch id to a Mail object
-     *
-     * @param string|BatchId $batch_id Id for a batch of emails
-     *                                 to be sent at the same time
-     * @throws TypeException
-     */
-    public function setBatchId($batch_id)
-    {
-        if (!($batch_id instanceof BatchId)) {
-            $batch_id = new BatchId($batch_id);
-        }
-        $this->batch_id = $batch_id;
-    }
-
-    /**
-     * Retrieve the batch id attached to a Mail object
-     *
-     * @return BatchId
-     */
-    public function getBatchId()
-    {
-        return $this->batch_id;
-    }
-
-    /**
-     * Add a Asm describing how to handle unsubscribes to a Mail object
-     *
-     * @param int|Asm $group_id Asm object or unsubscribe group id
-     *                                   to associate this email with
-     * @param array $groups_to_display Array of integer ids of unsubscribe
-     *                                   groups to be displayed on the
-     *                                   unsubscribe preferences page
-     * @throws TypeException
-     */
-    public function setAsm($group_id, $groups_to_display = null)
-    {
-        if ($group_id instanceof Asm) {
-            $asm = $group_id;
-            $this->asm = $asm;
-        } else {
-            $this->asm = new Asm($group_id, $groups_to_display);
-        }
-    }
-
-    /**
-     * Retrieve the Asm object describing how to handle unsubscribes attached
-     * to a Mail object
-     *
-     * @return Asm
-     */
-    public function getAsm()
-    {
-        return $this->asm;
-    }
-
-    /**
-     * Add the IP pool name to a Mail object
-     *
-     * @param string|IpPoolName $ip_pool_name The IP Pool that you would
-     *                                        like to send this email from
-     * @throws TypeException
-     */
-    public function setIpPoolName($ip_pool_name)
-    {
-        if ($ip_pool_name instanceof IpPoolName) {
-            $this->ip_pool_name = $ip_pool_name->getIpPoolName();
-        } else {
-            $this->ip_pool_name = new IpPoolName($ip_pool_name);
-        }
-
-    }
-
-    /**
-     * Retrieve the IP pool name attached to a Mail object
-     *
-     * @return IpPoolName
-     */
-    public function getIpPoolName()
-    {
-        return $this->ip_pool_name;
-    }
-
-    /**
-     * Add a MailSettings object to a Mail object
-     *
-     * @param MailSettings $mail_settings A collection of different
-     *                                    mail settings that you can
-     *                                    use to specify how you would
-     *                                    like this email to be handled
-     * @throws TypeException
-     */
-    public function setMailSettings($mail_settings)
-    {
-        if (!($mail_settings instanceof MailSettings)) {
-            throw new TypeException(
-                '$mail_settings must be an instance of SendGrid\Mail\MailSettings'
-            );
-        }
-        $this->mail_settings = $mail_settings;
-    }
-
-    /**
-     * Retrieve the MailSettings object attached to a Mail object
-     *
-     * @return MailSettings
-     */
-    public function getMailSettings()
-    {
-        return $this->mail_settings;
-    }
-
-	/**
-	 * Set the Bcc settings on a MailSettings object
-	 *
-	 * @param bool|BccSettings $enable A BccSettings object or a boolean
-	 *                                 to determine if this setting is active
-	 * @param string|null      $email  The email address to be bcc'ed
-	 * @throws TypeException
-	 */
-    public function setBccSettings($enable, $email = null)
-    {
-        if (!($this->mail_settings instanceof MailSettings)) {
-            $this->mail_settings = new MailSettings();
-        }
-        $this->mail_settings->setBccSettings($enable, $email);
-    }
-
-    /**
-     * Enable bypass list management on a MailSettings object
-     *
-     * Allows you to bypass all unsubscribe groups and suppressions to ensure
-     * that the email is delivered to every single recipient. This should only
-     * be used in emergencies when it is absolutely necessary that every
-     * recipient receives your email.
-     */
-    public function enableBypassListManagement()
-    {
-        if (!$this->mail_settings instanceof MailSettings) {
-            $this->mail_settings = new MailSettings();
-        }
-        $this->mail_settings->setBypassListManagement(true);
-    }
-
-    /**
-     * Disable bypass list management on a MailSettings object
-     *
-     * Allows you to bypass all unsubscribe groups and suppressions to ensure
-     * that the email is delivered to every single recipient. This should only
-     * be used in emergencies when it is absolutely necessary that every
-     * recipient receives your email.
-     */
-    public function disableBypassListManagement()
-    {
-        if (!($this->mail_settings instanceof MailSettings)) {
-            $this->mail_settings = new MailSettings();
-        }
-        $this->mail_settings->setBypassListManagement(false);
-    }
-
-    /**
-     * Set the Footer settings on a MailSettings object
-     *
-     * @param bool|Footer $enable A Footer object or a boolean
-     *                            to determine if this setting is active
-     * @param string|null $text The plain text content of the footer
-     * @param string|null $html The HTML content of the footer
-     */
-    public function setFooter($enable = null, $text = null, $html = null)
-    {
-        if (!$this->mail_settings instanceof MailSettings) {
-            $this->mail_settings = new MailSettings();
-        }
-        $this->mail_settings->setFooter($enable, $text, $html);
-    }
-
-    /**
-     * Enable sandbox mode on a MailSettings object
-     *
-     * This allows you to send a test email to ensure that your request
-     * body is valid and formatted correctly.
-     */
-    public function enableSandBoxMode()
-    {
-        if (!($this->mail_settings instanceof MailSettings)) {
-            $this->mail_settings = new MailSettings();
-        }
-        $this->mail_settings->setSandBoxMode(true);
-    }
-
-    /**
-     * Disable sandbox mode on a MailSettings object
-     *
-     * This allows you to send a test email to ensure that your request
-     * body is valid and formatted correctly.
-     */
-    public function disableSandBoxMode()
-    {
-        if (!($this->mail_settings instanceof MailSettings)) {
-            $this->mail_settings = new MailSettings();
-        }
-        $this->mail_settings->setSandBoxMode(false);
-    }
-
-    /**
-     * Set the spam check settings on a MailSettings object
-     *
-     * @param bool|SpamCheck $enable A SpamCheck object or a boolean
-     *                                    to determine if this setting is active
-     * @param int|null $threshold The threshold used to determine if your
-     *                                    content qualifies as spam on a scale from
-     *                                    1 to 10, with 10 being most strict, or
-     *                                    most likely to be considered as spam
-     * @param string|null $post_to_url An Inbound Parse URL that you would like
-     *                                    a copy of your email along with the spam
-     *                                    report to be sent to
-     */
-    public function setSpamCheck($enable = null, $threshold = null, $post_to_url = null)
-    {
-        if (!$this->mail_settings instanceof MailSettings) {
-            $this->mail_settings = new MailSettings();
-        }
-        $this->mail_settings->setSpamCheck($enable, $threshold, $post_to_url);
-    }
-
-    /**
-     * Add a TrackingSettings object to a Mail object
-     *
-     * @param TrackingSettings $tracking_settings Settings to determine how you
-     *                                            would like to track the metrics
-     *                                            of how your recipients interact
-     *                                            with your email
-     * @throws TypeException
-     */
-    public function setTrackingSettings($tracking_settings)
-    {
-        if (!($tracking_settings instanceof TrackingSettings)) {
-            throw new TypeException(
-                '$tracking_settings must be an instance of SendGrid\Mail\TrackingSettings'
-            );
-        }
-        $this->tracking_settings = $tracking_settings;
-    }
-
-    /**
-     * Retrieve the TrackingSettings object attached to a Mail object
-     *
-     * @return TrackingSettings
-     */
-    public function getTrackingSettings()
-    {
-        return $this->tracking_settings;
-    }
-
-    /**
-     * Set the click tracking settings on a TrackingSettings object
-     *
-     * @param bool|ClickTracking $enable A ClickTracking object or a boolean
-     *                                        to determine if this setting is active
-     * @param bool|null $enable_text Indicates if this setting should be
-     *                                        included in the text/plain portion of
-     *                                        your email
-     */
-    public function setClickTracking($enable = null, $enable_text = null)
-    {
-        if (!($this->tracking_settings instanceof TrackingSettings)) {
-            $this->tracking_settings = new TrackingSettings();
-        }
-        $this->tracking_settings->setClickTracking($enable, $enable_text);
-    }
-
-    /**
-     * Set the open tracking settings on a TrackingSettings object
-     *
-     * @param bool|OpenTracking $enable A OpenTracking object or a boolean
-     *                                            to determine if this setting is
-     *                                            active
-     * @param string|null $substitution_tag Allows you to specify a
-     *                                            substitution tag that you can
-     *                                            insert in the body of your email
-     *                                            at a location that you desire.
-     *                                            This tag will be replaced by the
-     *                                            open tracking pixel
-     */
-    public function setOpenTracking($enable = null, $substitution_tag = null)
-    {
-        if (!($this->tracking_settings instanceof TrackingSettings)) {
-            $this->tracking_settings = new TrackingSettings();
-        }
-        $this->tracking_settings->setOpenTracking($enable, $substitution_tag);
-    }
-
-    /**
-     * Set the subscription tracking settings on a TrackingSettings object
-     *
-     * @param bool|SubscriptionTracking $enable A SubscriptionTracking
-     *                                          object or a boolean to
-     *                                          determine if this setting
-     *                                          is active
-     * @param string|null $text Text to be appended to the
-     *                          email, with the
-     *                          subscription tracking
-     *                          link. You may control
-     *                          where the link is by using
-     *                          the tag <% %>
-     * @param string|null $html HTML to be appended to the
-     *                          email, with the
-     *                          subscription tracking
-     *                          link. You may control
-     *                          where the link is by using
-     *                          the tag <% %>
-     * @param string|null $substitution_tag A tag that will be
-     *                                      replaced with the
-     *                                      unsubscribe URL. for
-     *                                      example:
-     *                                      [unsubscribe_url]. If this
-     *                                      parameter is used, it will
-     *                                      override both the text and
-     *                                      html parameters. The URL
-     *                                      of the link will be placed
-     *                                      at the substitution tag’s
-     *                                      location, with no
-     *                                      additional formatting
-     */
-    public function setSubscriptionTracking(
-        $enable = null,
-        $text = null,
-        $html = null,
-        $substitution_tag = null
-    ) {
-        if (!($this->tracking_settings instanceof TrackingSettings)) {
-            $this->tracking_settings = new TrackingSettings();
-        }
-        $this->tracking_settings->setSubscriptionTracking(
-            $enable,
-            $text,
-            $html,
-            $substitution_tag
-        );
-    }
-
-    /**
-     * Set the Google anatlyics settings on a TrackingSettings object
-     *
-     * @param bool|Ganalytics $enable A Ganalytics object or a boolean to
-     *                                determine if this setting
-     *                                is active
-     * @param string|null $utm_source Name of the referrer source. (e.g.
-     *                                Google, SomeDomain.com, or
-     *                                Marketing Email)
-     * @param string|null $utm_medium Name of the marketing medium.
-     *                                (e.g. Email)
-     * @param string|null $utm_term Used to identify any paid keywords.
-     * @param string|null $utm_content Used to differentiate your campaign
-     *                                 from advertisements
-     * @param string|null $utm_campaign The name of the campaign
-     */
-    public function setGanalytics(
-        $enable = null,
-        $utm_source = null,
-        $utm_medium = null,
-        $utm_term = null,
-        $utm_content = null,
-        $utm_campaign = null
-    ) {
-        if (!($this->tracking_settings instanceof TrackingSettings)) {
-            $this->tracking_settings = new TrackingSettings();
-        }
-        $this->tracking_settings->setGanalytics(
-            $enable,
-            $utm_source,
-            $utm_medium,
-            $utm_term,
-            $utm_content,
-            $utm_campaign
-        );
-    }
-
-	/**
-	 * Return an array representing a request object for the Twilio SendGrid API
-	 *
-	 * @return null|array
-	 * @throws TypeException
-	 */
-    public function jsonSerialize()
-    {
-        // Detect if we are using the new dynamic templates
-        if ($this->getTemplateId() !== null && strpos($this->getTemplateId()->getTemplateId(), 'd-') === 0) {
-            foreach ($this->personalization as $personalization) {
-                $personalization->setHasDynamicTemplate(true);
-            }
-        }
-
-        return array_filter(
-            [
-                'personalizations' => array_values(array_filter(
-                    $this->getPersonalizations(),
-                    static function ($value) {
-                        return null !== $value && null !== $value->jsonSerialize();
-                    }
-                )),
-                'from' => $this->getFrom(),
-                'reply_to' => $this->getReplyTo(),
-                'subject' => $this->getGlobalSubject(),
-                'content' => $this->getContents(),
-                'attachments' => $this->getAttachments(),
-                'template_id' => $this->getTemplateId(),
-                'sections' => $this->getSections(),
-                'headers' => $this->getGlobalHeaders(),
-                'categories' => $this->getCategories(),
-                'custom_args' => $this->getGlobalCustomArgs(),
-                'send_at' => $this->getGlobalSendAt(),
-                'batch_id' => $this->getBatchId(),
-                'asm' => $this->getASM(),
-                'ip_pool_name' => $this->getIpPoolName(),
-                'substitutions' => $this->getGlobalSubstitutions(),
-                'mail_settings' => $this->getMailSettings(),
-                'tracking_settings' => $this->getTrackingSettings()
-            ],
-            static function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/MailSettings.php b/libs/sendgrid/lib/mail/MailSettings.php
deleted file mode 100644
index 5920e50..0000000
--- a/libs/sendgrid/lib/mail/MailSettings.php
+++ /dev/null
@@ -1,266 +0,0 @@
-<?php
-/**
- * This helper builds the MailSettings object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a MailSettings object for the /mail/send API call
- *
- * A collection of different mail settings that you can use to specify how you would
- * like this email to be handled
- *
- * @package SendGrid\Mail
- */
-class MailSettings implements \JsonSerializable
-{
-    /** @var $bcc Bcc object */
-    private $bcc;
-    /** @var $bypass_list_management BypassListManagement object */
-    private $bypass_list_management;
-    /** @var $footer Footer object */
-    private $footer;
-    /** @var $sandbox_mode SandBoxMode object */
-    private $sandbox_mode;
-    /** @var $spam_check SpamCheck object */
-    private $spam_check;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param BccSettings|null          $bcc_settings           BccSettings object
-	 * @param BypassListManagement|null $bypass_list_management BypassListManagement
-	 *                                                          object
-	 * @param Footer|null               $footer                 Footer object
-	 * @param SandBoxMode|null          $sandbox_mode           SandBoxMode object
-	 * @param SpamCheck|null            $spam_check             SpamCheck object
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct(
-        $bcc_settings = null,
-        $bypass_list_management = null,
-        $footer = null,
-        $sandbox_mode = null,
-        $spam_check = null
-    ) {
-        if (isset($bcc_settings)) {
-            $this->setBccSettings($bcc_settings);
-        }
-        if (isset($bypass_list_management)) {
-            $this->setBypassListManagement($bypass_list_management);
-        }
-        if (isset($footer)) {
-            $this->setFooter($footer);
-        }
-        if (isset($sandbox_mode)) {
-            $this->setSandboxMode($sandbox_mode);
-        }
-        if (isset($spam_check)) {
-            $this->setSpamCheck($spam_check);
-        }
-    }
-
-    /**
-     * Set the bcc settings on a MailSettings object
-     *
-     * @param BccSettings|bool $enable The BccSettings object or an indication
-     *                                 if the setting is enabled
-     * @param string|null $email The email address that you would like
-     *                                 to receive the BCC
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setBccSettings($enable, $email = null)
-    {
-        if ($enable instanceof BccSettings) {
-            $bcc = $enable;
-            $this->bcc = $bcc;
-            return;
-        }
-        if (!is_bool($enable)) {
-            throw new TypeException(
-                '$enable must be an instance of SendGrid\Mail\BccSettings or of type bool.'
-            );
-        }
-        $this->bcc = new BccSettings($enable, $email);
-    }
-
-    /**
-     * Retrieve the bcc settings from a MailSettings object
-     *
-     * @return Bcc
-     */
-    public function getBccSettings()
-    {
-        return $this->bcc;
-    }
-
-    /**
-     * Set bypass list management settings on a MailSettings object
-     *
-     * @param BypassListManagement|bool $enable The BypassListManagement
-     *                                          object or an indication
-     *                                          if the setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setBypassListManagement($enable)
-    {
-        if ($enable instanceof BypassListManagement) {
-            $bypass_list_management = $enable;
-            $this->bypass_list_management = $bypass_list_management;
-            return;
-        }
-        if (!is_bool($enable)) {
-            throw new TypeException(
-                '$enable must be an instance of SendGrid\Mail\BypassListManagement or of type bool.'
-            );
-        }
-        $this->bypass_list_management = new BypassListManagement($enable);
-        return;
-    }
-
-    /**
-     * Retrieve bypass list management settings from a MailSettings object
-     *
-     * @return BypassListManagement
-     */
-    public function getBypassListManagement()
-    {
-        return $this->bypass_list_management;
-    }
-
-    /**
-     * Set the footer settings on a MailSettings object
-     *
-     * @param Footer|bool $enable The Footer object or an indication
-     *                            if the setting is enabled
-     * @param string|null $text The plain text content of your footer
-     * @param string|null $html The HTML content of your footer
-     *
-     * @return null
-     */
-    public function setFooter($enable, $text = null, $html = null)
-    {
-        if ($enable instanceof Footer) {
-            $footer = $enable;
-            $this->footer = $footer;
-            return;
-        }
-        $this->footer = new Footer($enable, $text, $html);
-        return;
-    }
-
-    /**
-     * Retrieve the footer settings from a MailSettings object
-     *
-     * @return Footer
-     */
-    public function getFooter()
-    {
-        return $this->footer;
-    }
-
-    /**
-     * Set sandbox mode settings on a MailSettings object
-     *
-     * @param SandBoxMode|bool $enable The SandBoxMode object or an
-     *                                 indication if the setting is enabled
-     *
-     * @return null
-     */
-    public function setSandboxMode($enable)
-    {
-        if ($enable instanceof SandBoxMode) {
-            $sandbox_mode = $enable;
-            $this->sandbox_mode = $sandbox_mode;
-            return;
-        }
-        $this->sandbox_mode = new SandBoxMode($enable);
-        return;
-    }
-
-    /**
-     * Retrieve sandbox mode settings on a MailSettings object
-     *
-     * @return SandBoxMode
-     */
-    public function getSandboxMode()
-    {
-        return $this->sandbox_mode;
-    }
-
-    /**
-     * Enable sandbox mode on a MailSettings object
-     */
-    public function enableSandboxMode()
-    {
-        $this->setSandboxMode(true);
-    }
-
-    /**
-     * Disable sandbox mode on a MailSettings object
-     */
-    public function disableSandboxMode()
-    {
-        $this->setSandboxMode(false);
-    }
-
-    /**
-     * Set spam check settings on a MailSettings object
-     *
-     * @param SpamCheck|bool $enable The SpamCheck object or an
-     *                                    indication if the setting is enabled
-     * @param int $threshold The threshold used to determine if your
-     *                                    content qualifies as spam on a scale
-     *                                    from 1 to 10, with 10 being most strict,
-     *                                    or most
-     * @param string $post_to_url An Inbound Parse URL that you would like
-     *                                    a copy of your email along with the spam
-     *                                    report to be sent to
-     *
-     * @return null
-     */
-    public function setSpamCheck($enable, $threshold = null, $post_to_url = null)
-    {
-        if ($enable instanceof SpamCheck) {
-            $spam_check = $enable;
-            $this->spam_check = $spam_check;
-            return;
-        }
-        $this->spam_check = new SpamCheck($enable, $threshold, $post_to_url);
-        return;
-    }
-
-    /**
-     * Retrieve spam check settings from a MailSettings object
-     *
-     * @return SpamCheck
-     */
-    public function getSpamCheck()
-    {
-        return $this->spam_check;
-    }
-
-    /**
-     * Return an array representing a MailSettings object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'bcc' => $this->getBccSettings(),
-                'bypass_list_management' => $this->getBypassListManagement(),
-                'footer' => $this->getFooter(),
-                'sandbox_mode' => $this->getSandboxMode(),
-                'spam_check' => $this->getSpamCheck()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/MimeType.php b/libs/sendgrid/lib/mail/MimeType.php
deleted file mode 100644
index b854edb..0000000
--- a/libs/sendgrid/lib/mail/MimeType.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-/**
- * This helper defines the content mime types for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to define the content mime types for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-abstract class MimeType
-{
-    const HTML = "text/html";
-    const TEXT = "text/plain";
-}
diff --git a/libs/sendgrid/lib/mail/OpenTracking.php b/libs/sendgrid/lib/mail/OpenTracking.php
deleted file mode 100644
index 3de3284..0000000
--- a/libs/sendgrid/lib/mail/OpenTracking.php
+++ /dev/null
@@ -1,116 +0,0 @@
-<?php
-/**
- * This helper builds the OpenTracking object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a OpenTracking object for the /mail/send API call
- *
- * Allows you to track whether the email was opened or not, but including a single
- * pixel image in the body of the content. When the pixel is loaded, we can log that
- * the email was opened
- *
- * @package SendGrid\Mail
- */
-class OpenTracking implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-    /** @var $substitution_tag string Allows you to specify a substitution tag that you can insert in the body of your email at a location that you desire. This tag will be replaced by the open tracking pixel */
-    private $substitution_tag;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null   $enable           Indicates if this setting is enabled
-	 * @param string|null $substitution_tag Allows you to specify a substitution
-	 *                                      tag that you can insert in the body
-	 *                                      of your email at a location that you
-	 *                                      desire. This tag will be replaced by
-	 *                                      the open tracking pixel
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($enable = null, $substitution_tag = null)
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-        if (isset($substitution_tag)) {
-            $this->setSubstitutionTag($substitution_tag);
-        }
-    }
-
-    /**
-     * Update the enable setting on a OpenTracking object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a OpenTracking object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Set the substitution tag on a OpenTracking object
-     *
-     * @param string $substitution_tag Allows you to specify a substitution
-     *                                 tag that you can insert in the body
-     *                                 of your email at a location that you
-     *                                 desire. This tag will be replaced by
-     *                                 the open tracking pixel
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSubstitutionTag($substitution_tag)
-    {
-        if (!is_string($substitution_tag)) {
-            throw new TypeException('$substitution_tag must be of type string.');
-        }
-        $this->substitution_tag = $substitution_tag;
-    }
-
-    /**
-     * Retrieve the substitution tag from a OpenTracking object
-     *
-     * @return string
-     */
-    public function getSubstitutionTag()
-    {
-        return $this->substitution_tag;
-    }
-
-    /**
-     * Return an array representing a OpenTracking object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable(),
-                'substitution_tag' => $this->getSubstitutionTag()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Personalization.php b/libs/sendgrid/lib/mail/Personalization.php
deleted file mode 100644
index b9273ae..0000000
--- a/libs/sendgrid/lib/mail/Personalization.php
+++ /dev/null
@@ -1,303 +0,0 @@
-<?php
-/**
- * This helper builds the Personalization object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Personalization object for
- * the /mail/send API call
- *
- * Each Personalization can be thought of as an envelope - it defines
- * who should receive an individual message and how that message should be handled
- *
- * @package SendGrid\Mail
- */
-class Personalization implements \JsonSerializable
-{
-    /** @var $tos To[] objects */
-    private $tos;
-    /** @var $ccs Cc[] objects */
-    private $ccs;
-    /** @var $bccs Bcc[] objects */
-    private $bccs;
-    /** @var $subject Subject object */
-    private $subject;
-    /** @var $headers Header[] array of header key values */
-    private $headers;
-    /** @var $substitutions Substitution[] array of substitution key values, used for legacy templates */
-    private $substitutions;
-    /** @var array of dynamic template data key values */
-    private $dynamic_template_data;
-    /** @var bool if we are using dynamic templates this will be true */
-    private $has_dynamic_template = false;
-    /** @var $custom_args CustomArg[] array of custom arg key values */
-    private $custom_args;
-    /** @var $send_at SendAt object */
-    private $send_at;
-
-    /**
-     * Add a To object to a Personalization object
-     *
-     * @param To $email To object
-     */
-    public function addTo($email)
-    {
-        $this->tos[] = $email;
-    }
-
-    /**
-     * Retrieve To object(s) from a Personalization object
-     *
-     * @return To[]
-     */
-    public function getTos()
-    {
-        return $this->tos;
-    }
-
-    /**
-     * Add a Cc object to a Personalization object
-     *
-     * @param Cc $email Cc object
-     */
-    public function addCc($email)
-    {
-        $this->ccs[] = $email;
-    }
-
-    /**
-     * Retrieve Cc object(s) from a Personalization object
-     *
-     * @return Cc[]
-     */
-    public function getCcs()
-    {
-        return $this->ccs;
-    }
-
-    /**
-     * Add a Bcc object to a Personalization object
-     *
-     * @param Bcc $email Bcc object
-     */
-    public function addBcc($email)
-    {
-        $this->bccs[] = $email;
-    }
-
-    /**
-     * Retrieve Bcc object(s) from a Personalization object
-     *
-     * @return Bcc[]
-     */
-    public function getBccs()
-    {
-        return $this->bccs;
-    }
-
-    /**
-     * Add a subject object to a Personalization object
-     *
-     * @param Subject $subject Subject object
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSubject($subject)
-    {
-        if (!($subject instanceof Subject)) {
-            throw new TypeException(
-                '$subject must be an instance of SendGrid\Mail\Subject'
-            );
-        }
-        $this->subject = $subject;
-    }
-
-    /**
-     * Retrieve a Subject object from a Personalization object
-     *
-     * @return Subject
-     */
-    public function getSubject()
-    {
-        return $this->subject;
-    }
-
-    /**
-     * Add a Header object to a Personalization object
-     *
-     * @param Header $header Header object
-     */
-    public function addHeader($header)
-    {
-        $this->headers[$header->getKey()] = $header->getValue();
-    }
-
-    /**
-     * Retrieve header key/value pairs from a Personalization object
-     *
-     * @return array
-     */
-    public function getHeaders()
-    {
-        return $this->headers;
-    }
-
-    /**
-     * Add a Substitution object or key/value to a Personalization object
-     *
-     * @param Substitution|string $data DynamicTemplateData object or the key of a
-     *                                  dynamic data
-     * @param string|null         $value The value of dynmic data
-     *
-     * @return null
-     */
-    public function addDynamicTemplateData($data, $value = null)
-    {
-        $this->addSubstitution($data, $value);
-    }
-
-    /**
-     * Retrieve dynamic template data key/value pairs from a Personalization object
-     *
-     * @return array
-     */
-    public function getDynamicTemplateData()
-    {
-        return $this->getSubstitutions();
-    }
-
-    /**
-     * Add a Substitution object or key/value to a Personalization object
-     *
-     * @param Substitution|string $substitution Substitution object or the key of a
-     *                                          substitution
-     * @param string|null $value The value of a substitution
-     */
-    public function addSubstitution($substitution, $value = null)
-    {
-        if (!($substitution instanceof Substitution)) {
-            $key = $substitution;
-            $substitution = new Substitution($key, $value);
-        }
-        $this->substitutions[$substitution->getKey()] = $substitution->getValue();
-    }
-
-    /**
-     * Retrieve substitution key/value pairs from a Personalization object
-     *
-     * @return array
-     */
-    public function getSubstitutions()
-    {
-        return $this->substitutions;
-    }
-
-    /**
-     * Add a CustomArg object to a Personalization object
-     *
-     * @param CustomArg $custom_arg CustomArg object
-     */
-    public function addCustomArg($custom_arg)
-    {
-        $this->custom_args[$custom_arg->getKey()] = (string)$custom_arg->getValue();
-    }
-
-    /**
-     * Retrieve custom arg key/value pairs from a Personalization object
-     *
-     * @return array
-     */
-    public function getCustomArgs()
-    {
-        return $this->custom_args;
-    }
-
-    /**
-     * Add a SendAt object to a Personalization object
-     *
-     * @param SendAt $send_at SendAt object
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSendAt($send_at)
-    {
-        if (!($send_at instanceof SendAt)) {
-            throw new TypeException(
-                '$send_at must be an instance of SendGrid\Mail\SendAt'
-            );
-        }
-        $this->send_at = $send_at;
-    }
-
-    /**
-     * Retrieve a SendAt object from a Personalization object
-     *
-     * @return SendAt
-     */
-    public function getSendAt()
-    {
-        return $this->send_at;
-    }
-
-    /**
-     * Specify if this personalization is using dynamic templates
-     *
-     * @param bool $has_dynamic_template are we using dynamic templates
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setHasDynamicTemplate($has_dynamic_template)
-    {
-        if (is_bool($has_dynamic_template) != true) {
-            throw new TypeException(
-                '$has_dynamic_template must be an instance of bool'
-            );
-        }
-        $this->has_dynamic_template = $has_dynamic_template;
-    }
-
-    /**
-     * Determine if this Personalization object is using dynamic templates
-     *
-     * @return bool
-     */
-    public function getHasDynamicTemplate()
-    {
-        return $this->has_dynamic_template;
-    }
-
-    /**
-     * Return an array representing a Personalization object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        if ($this->getHasDynamicTemplate() == true) {
-            $dynamic_substitutions = $this->getSubstitutions();
-            $substitutions = null;
-        } else {
-            $substitutions = $this->getSubstitutions();
-            $dynamic_substitutions = null;
-        }
-
-        return array_filter(
-            [
-                'to' => $this->getTos(),
-                'cc' => $this->getCcs(),
-                'bcc' => $this->getBccs(),
-                'subject' => $this->getSubject(),
-                'headers' => $this->getHeaders(),
-                'substitutions' => $substitutions,
-                'dynamic_template_data' => $dynamic_substitutions,
-                'custom_args' => $this->getCustomArgs(),
-                'send_at' => $this->getSendAt()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/PlainTextContent.php b/libs/sendgrid/lib/mail/PlainTextContent.php
deleted file mode 100644
index a71fcc9..0000000
--- a/libs/sendgrid/lib/mail/PlainTextContent.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-/**
- * This helper builds theContent object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Content object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class PlainTextContent extends Content
-{
-    /**
-     * Create a Content object with a plain text mime type
-     *
-     * @param string $value plain text formatted content
-     */
-    public function __construct($value)
-    {
-        parent::__construct(MimeType::TEXT, $value);
-    }
-}
diff --git a/libs/sendgrid/lib/mail/README.md b/libs/sendgrid/lib/mail/README.md
deleted file mode 100644
index 87a0997..0000000
--- a/libs/sendgrid/lib/mail/README.md
+++ /dev/null
@@ -1,14 +0,0 @@
-**This helper allows you to quickly and easily build a Mail object for sending email through Twilio SendGrid.**
-
-# Quick Start
-
-Run the [example](https://github.com/sendgrid/sendgrid-php/blob/master/examples/helpers/mail/example.php) (make sure you have set your environment variable to include your SENDGRID_API_KEY).
-
-```bash
-php examples/helpers/mail/example.php
-```
-
-## Usage
-
-- See this complete working [example](https://github.com/sendgrid/sendgrid-php/blob/master/examples/helpers/mail/example.php).
-- [Documentation](https://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/overview.html)
diff --git a/libs/sendgrid/lib/mail/ReplyTo.php b/libs/sendgrid/lib/mail/ReplyTo.php
deleted file mode 100644
index 82779dc..0000000
--- a/libs/sendgrid/lib/mail/ReplyTo.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * This helper builds the ReplyTo object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a ReplyTo object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class ReplyTo extends EmailAddress implements \JsonSerializable
-{
-}
diff --git a/libs/sendgrid/lib/mail/SandBoxMode.php b/libs/sendgrid/lib/mail/SandBoxMode.php
deleted file mode 100644
index 698d99a..0000000
--- a/libs/sendgrid/lib/mail/SandBoxMode.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-/**
- * This helper builds the SandBoxMode object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a SandBoxMode object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class SandBoxMode implements \JsonSerializable
-{
-    // @var bool Indicates if this setting is enabled
-    private $enable;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null $enable Indicates if this setting is enabled
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($enable = null)
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-    }
-
-    /**
-     * Update the enable setting on a SandBoxMode object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool.');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a SandBoxMode object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Return an array representing a SandBoxMode object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Section.php b/libs/sendgrid/lib/mail/Section.php
deleted file mode 100644
index 892adf6..0000000
--- a/libs/sendgrid/lib/mail/Section.php
+++ /dev/null
@@ -1,107 +0,0 @@
-<?php
-/**
- * This helper builds the Section object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Section object for the /mail/send API call
- *
- * An object of key/value pairs that define block sections of code to be used
- * as substitutions
- *
- * @package SendGrid\Mail
- */
-class Section implements \JsonSerializable
-{
-    /** @var $key string Section key */
-    private $key;
-    /** @var $value string Section value */
-    private $value;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $key   Section key
-	 * @param string|null $value Section value
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($key = null, $value = null)
-    {
-        if (isset($key)) {
-            $this->setKey($key);
-        }
-        if (isset($value)) {
-            $this->setValue($value);
-        }
-    }
-
-    /**
-     * Add the key on a Section object
-     *
-     * @param string $key Section key
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setKey($key)
-    {
-        if (!is_string($key)) {
-            throw new TypeException('$key must be of type string.');
-        }
-        $this->key = $key;
-    }
-
-    /**
-     * Retrieve the key from a Section object
-     *
-     * @return string
-     */
-    public function getKey()
-    {
-        return $this->key;
-    }
-
-    /**
-     * Add the value on a Section object
-     *
-     * @param string $value Section value
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setValue($value)
-    {
-        if (!is_string($value)) {
-            throw new TypeException('$value must be of type string.');
-        }
-        $this->value = $value;
-    }
-
-    /**
-     * Retrieve the value from a Section object
-     *
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->value;
-    }
-
-    /**
-     * Return an array representing a Section object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'key' => $this->getKey(),
-                'value' => $this->getValue()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/SendAt.php b/libs/sendgrid/lib/mail/SendAt.php
deleted file mode 100644
index 1946673..0000000
--- a/libs/sendgrid/lib/mail/SendAt.php
+++ /dev/null
@@ -1,94 +0,0 @@
-<?php
-/**
- * This helper builds the SendAt object for a /mail/send API call
- */
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a SendAt object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class SendAt implements \JsonSerializable
-{
-    /**
-     * @var $send_at int A unix timestamp allowing you to specify when you want your email
-     * to be delivered. This may be overridden by the personalizations[x].send_at
-     * parameter. You can't schedule more than 72 hours in advance. If you have
-     * the flexibility, it's better to schedule mail for off-peak times. Most
-     * emails are scheduled and sent at the top of the hour or half hour.
-     * Scheduling email to avoid those times (for example, scheduling at 10:53) can
-     * result in lower deferral rates because it won't be going through our servers
-     * at the same times as everyone else's mail
-     */
-
-    private $send_at;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param int|null $send_at A unix timestamp allowing you to specify when you
-	 *                          want your email to be delivered. This may be
-	 *                          overridden by the personalizations[x].send_at
-	 *                          parameter. You can't schedule more than 72 hours
-	 *                          in advance. If you have the flexibility, it's better
-	 *                          to schedule mail for off-peak times. Most emails are
-	 *                          scheduled and sent at the top of the hour or half
-	 *                          hour. Scheduling email to avoid those times (for
-	 *                          example, scheduling at 10:53) can result in lower
-	 *                          deferral rates because it won't be going through
-	 *                          our servers at the same times as everyone else's mail
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($send_at=null)
-    {
-        if (isset($send_at)) {
-            $this->setSendAt($send_at);
-        }
-    }
-
-    /**
-     * Add the send at value to a SendAt object
-     *
-     * @param int $send_at A unix timestamp allowing you to specify when you
-     *                     want your email to be delivered. This may be
-     *                     overridden by the personalizations[x].send_at
-     *                     parameter. You can't schedule more than 72 hours
-     *                     in advance. If you have the flexibility, it's better
-     *                     to schedule mail for off-peak times. Most emails are
-     *                     scheduled and sent at the top of the hour or half
-     *                     hour. Scheduling email to avoid those times (for
-     *                     example, scheduling at 10:53) can result in lower
-     *                     deferral rates because it won't be going through
-     *                     our servers at the same times as everyone else's mail
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSendAt($send_at)
-    {
-        if (!is_int($send_at)) {
-            throw new TypeException('$send_at must be of type int.');
-        }
-        $this->send_at = $send_at;
-    }
-
-    /**
-     * Retrieve the send at value from a SendAt object
-     *
-     * @return int
-     */
-    public function getSendAt()
-    {
-        return $this->send_at;
-    }
-
-    /**
-     * Return an array representing a SendAt object for the Twilio SendGrid API
-     *
-     * @return int
-     */
-    public function jsonSerialize()
-    {
-        return $this->getSendAt();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/SpamCheck.php b/libs/sendgrid/lib/mail/SpamCheck.php
deleted file mode 100644
index 700b725..0000000
--- a/libs/sendgrid/lib/mail/SpamCheck.php
+++ /dev/null
@@ -1,153 +0,0 @@
-<?php
-/**
- * This helper builds the SpamCheck object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a SpamCheck object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class SpamCheck implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-    /**
-     * @var $threshold int The threshold used to determine if your content qualifies as
-     * spam on a scale from 1 to 10, with 10 being most strict, or most
-     * likely to be considered as spam
-     */
-    private $threshold;
-    /**
-     * @var $post_to_urlstring An Inbound Parse URL that you would like a copy of your
-     * email along with the spam report to be sent to
-     */
-    private $post_to_url;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null   $enable      Indicates if this setting is enabled
-	 * @param int|null    $threshold   The threshold used to determine if your
-	 *                                 content qualifies as spam on a scale
-	 *                                 from 1 to 10, with 10 being most strict,
-	 *                                 or most
-	 * @param string|null $post_to_url An Inbound Parse URL that you would like
-	 *                                 a copy of your email along with the spam
-	 *                                 report to be sent to
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($enable = null, $threshold = null, $post_to_url = null)
-    {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-        if (isset($threshold)) {
-            $this->setThreshold($threshold);
-        }
-        if (isset($post_to_url)) {
-            $this->setPostToUrl($post_to_url);
-        }
-    }
-
-    /**
-     * Update the enable setting on a SpamCheck object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool.');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting on a SpamCheck object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Set the threshold value on a SpamCheck object
-     *
-     * @param int $threshold The threshold used to determine if your
-     *                       content qualifies as spam on a scale
-     *                       from 1 to 10, with 10 being most strict,
-     *                       or most
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setThreshold($threshold)
-    {
-        if (!is_int($threshold)) {
-            throw new TypeException('$threshold must be of type int.');
-        }
-        $this->threshold = $threshold;
-    }
-
-    /**
-     * Retrieve the threshold value from a SpamCheck object
-     *
-     * @return int
-     */
-    public function getThreshold()
-    {
-        return $this->threshold;
-    }
-
-    /**
-     * Set the post to url value on a SpamCheck object
-     *
-     * @param string $post_to_url An Inbound Parse URL that you would like
-     *                            a copy of your email along with the spam
-     *                            report to be sent to
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setPostToUrl($post_to_url)
-    {
-        if (!is_string($post_to_url)) {
-            throw new TypeException('$post_to_url must be of type string.');
-        }
-        $this->post_to_url = $post_to_url;
-    }
-
-    /**
-     * Retrieve the post to url value from a SpamCheck object
-     *
-     * @return string
-     */
-    public function getPostToUrl()
-    {
-        return $this->post_to_url;
-    }
-
-    /**
-     * Return an array representing a SpamCheck object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable(),
-                'threshold' => $this->getThreshold(),
-                'post_to_url' => $this->getPostToUrl()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Subject.php b/libs/sendgrid/lib/mail/Subject.php
deleted file mode 100644
index 6f8054e..0000000
--- a/libs/sendgrid/lib/mail/Subject.php
+++ /dev/null
@@ -1,66 +0,0 @@
-<?php
-/**
- * This helper builds the Subject object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Subject object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Subject implements \JsonSerializable
-{
-    /** @var $subject string The email subject */
-    private $subject;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $subject The email subject
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($subject = null)
-    {
-        if (isset($subject)) {
-            $this->setSubject($subject);
-        }
-    }
-
-    /**
-     * Set the subject on a Subject object
-     *
-     * @param string $subject The email subject
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSubject($subject)
-    {
-        if (!is_string($subject)) {
-            throw new TypeException('$subject must be of type string.');
-        }
-
-        $this->subject = $subject;
-    }
-
-    /**
-     * Retrieve the subject from a Subject object
-     *
-     * @return string
-     */
-    public function getSubject()
-    {
-        return mb_convert_encoding($this->subject, 'UTF-8', 'UTF-8');
-    }
-
-    /**
-     * Return an array representing a Subject object for the Twilio SendGrid API
-     *
-     * @return string
-     */
-    public function jsonSerialize()
-    {
-        return $this->getSubject();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/SubscriptionTracking.php b/libs/sendgrid/lib/mail/SubscriptionTracking.php
deleted file mode 100644
index 3005138..0000000
--- a/libs/sendgrid/lib/mail/SubscriptionTracking.php
+++ /dev/null
@@ -1,220 +0,0 @@
-<?php
-/**
- * This helper builds the SubscriptionTracking object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a SubscriptionTracking object for
- * the /mail/send API call
- *
- * Allows you to insert a subscription management link at the bottom
- * of the text and html bodies of your email. If you would like to
- * specify the location of the link within your email, you may use
- * the substitution_tag
- *
- * @package SendGrid\Mail
- */
-class SubscriptionTracking implements \JsonSerializable
-{
-    /** @var $enable bool Indicates if this setting is enabled */
-    private $enable;
-    /**
-     * @var $text string Text to be appended to the email, with the
-     * subscription tracking link. You may control where the
-     * link is by using the tag <% %>
-     */
-    private $text;
-    /**
-     * @var $htmlstring string to be appended to the email, with the
-     * subscription tracking link. You may control where the
-     * link is by using the tag <% %>
-     */
-    private $html;
-    /**
-     * @var $substitution_tag string A tag that will be replaced with the
-     * unsubscribe URL. for example: [unsubscribe_url]. If
-     * this parameter is used, it will override both the text
-     * and html parameters. The URL of the link will be placed
-     * at the substitution tag’s location, with no additional
-     * formatting
-     */
-    private $substitution_tag;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param bool|null   $enable           Indicates if this setting is enabled
-	 * @param string|null $text             Text to be appended to the email, with
-	 *                                      the subscription tracking link. You may
-	 *                                      control where the link is by using the
-	 *                                      tag <% %>
-	 * @param string|null $html             HTML to be appended to the email, with
-	 *                                      the subscription tracking link. You may
-	 *                                      control where the link is by using the
-	 *                                      tag <% %>
-	 * @param string|null $substitution_tag A tag that will be replaced with the
-	 *                                      unsubscribe URL. For example:
-	 *                                      [unsubscribe_url]. If this parameter
-	 *                                      is used, it will override both the text
-	 *                                      and html parameters. The URL of the link
-	 *                                      will be placed at the substitution tag’s
-	 *                                      location, with no additional formatting
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct(
-        $enable = null,
-        $text = null,
-        $html = null,
-        $substitution_tag = null
-    ) {
-        if (isset($enable)) {
-            $this->setEnable($enable);
-        }
-        if (isset($text)) {
-            $this->setText($text);
-        }
-        if (isset($html)) {
-            $this->setHtml($html);
-        }
-        if (isset($substitution_tag)) {
-            $this->setSubstitutionTag($substitution_tag);
-        }
-    }
-
-    /**
-     * Update the enable setting on a SubscriptionTracking object
-     *
-     * @param bool $enable Indicates if this setting is enabled
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setEnable($enable)
-    {
-        if (!is_bool($enable)) {
-            throw new TypeException('$enable must be of type bool.');
-        }
-        $this->enable = $enable;
-    }
-
-    /**
-     * Retrieve the enable setting from a SubscriptionTracking object
-     *
-     * @return bool
-     */
-    public function getEnable()
-    {
-        return $this->enable;
-    }
-
-    /**
-     * Add text to a SubscriptionTracking object
-     *
-     * @param string $text Text to be appended to the email, with
-     *                     the subscription tracking link. You may
-     *                     control where the link is by using the
-     *                     tag <% %>
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setText($text)
-    {
-        if (!is_string($text)) {
-            throw new TypeException('$text must be of type string.');
-        }
-        $this->text = $text;
-    }
-
-    /**
-     * Retrieve text from a SubscriptionTracking object
-     *
-     * @return string
-     */
-    public function getText()
-    {
-        return $this->text;
-    }
-
-    /**
-     * Add HTML to a SubscriptionTracking object
-     *
-     * @param string $html HTML to be appended to the email, with
-     *                     the subscription tracking link. You may
-     *                     control where the link is by using the
-     *                     tag <% %>
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setHtml($html)
-    {
-        if (!is_string($html)) {
-            throw new TypeException('$html must be of type string.');
-        }
-        $this->html = $html;
-    }
-
-    /**
-     * Retrieve HTML from a SubscriptionTracking object
-     *
-     * @return string
-     */
-    public function getHtml()
-    {
-        return $this->html;
-    }
-
-    /**
-     * Add a substitution tag to a SubscriptionTracking object
-     *
-     * @param string $substitution_tag A tag that will be replaced with the
-     *                                 unsubscribe URL. for example:
-     *                                 [unsubscribe_url]. If this parameter
-     *                                 is used, it will override both the text
-     *                                 and html parameters. The URL of the link
-     *                                 will be placed at the substitution tag’s
-     *                                 location, with no additional formatting %>
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setSubstitutionTag($substitution_tag)
-    {
-        if (!is_string($substitution_tag)) {
-            throw new TypeException(
-                '$substitution_tag must be of type string.'
-            );
-        }
-        $this->substitution_tag = $substitution_tag;
-    }
-
-    /**
-     * Retrieve a substitution tag from a SubscriptionTracking object
-     *
-     * @return string
-     */
-    public function getSubstitutionTag()
-    {
-        return $this->substitution_tag;
-    }
-
-    /**
-     * Return an array representing a SubscriptionTracking object
-     * for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'enable' => $this->getEnable(),
-                'text' => $this->getText(),
-                'html' => $this->getHtml(),
-                'substitution_tag' => $this->getSubstitutionTag()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/Substitution.php b/libs/sendgrid/lib/mail/Substitution.php
deleted file mode 100644
index 14194d3..0000000
--- a/libs/sendgrid/lib/mail/Substitution.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-/**
- * This helper builds the Substitution object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a Substitution object for the /mail/send API call
- *
- * A collection of key/value pairs following the pattern "substitution_tag":"value
- * to substitute". All are assumed to be strings. These substitutions will apply
- * to the text and html content of the body of your email, in addition to the
- * subject and reply-to parameters. The total collective size of your substitutions
- * may not exceed 10,000 bytes per personalization object
- *
- * @package SendGrid\Mail
- */
-class Substitution implements \JsonSerializable
-{
-    /** @var $key string Substitution key */
-    private $key;
-    /** @var $value string Substitution value */
-    private $value;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $key   Substitution key
-	 * @param string|null $value Substitution value
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($key = null, $value = null)
-    {
-        if (isset($key)) {
-            $this->setKey($key);
-        }
-        if (isset($value)) {
-            $this->setValue($value);
-        }
-    }
-
-    /**
-     * Add the key on a Substitution object
-     *
-     * @param string $key Substitution key
-     *
-     * @throws \SendGrid\Mail\TypeException
-     * @return null
-     */
-    public function setKey($key)
-    {
-        if (!is_string($key)) {
-            throw new TypeException('$key must be of type string.');
-        }
-        $this->key = (string) $key;
-    }
-
-    /**
-     * Retrieve the key from a Substitution object
-     *
-     * @return string
-     */
-    public function getKey()
-    {
-        return $this->key;
-    }
-
-    /**
-     * Add the value on a Substitution object
-     *
-     * @param string|array|bool|int $value Substitution value
-     *
-     * @throws \SendGrid\Mail\TypeException
-     * @return null
-     */
-    public function setValue($value)
-    {
-        if (!is_string($value) && !is_array($value) && !is_object($value) &&!is_bool($value) &&!is_int($value)) {
-            throw new TypeException('$value must be of type string, array or object.');
-        }
-        $this->value = $value;
-    }
-
-    /**
-     * Retrieve the value from a Substitution object
-     *
-     * @return string
-     */
-    public function getValue()
-    {
-        return $this->value;
-    }
-
-    /**
-     * Return an array representing a Substitution object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'key' => $this->getKey(),
-                'value' => $this->getValue()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/TemplateId.php b/libs/sendgrid/lib/mail/TemplateId.php
deleted file mode 100644
index b494850..0000000
--- a/libs/sendgrid/lib/mail/TemplateId.php
+++ /dev/null
@@ -1,78 +0,0 @@
-<?php
-/**
- * This helper builds the TemplateId object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a TemplateId object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class TemplateId implements \JsonSerializable
-{
-    /**
-     * @var $template_id string The id of a template that you would like to use. If you use a
-     * template that contains a subject and content (either text or html), you do
-     * not need to specify those at the personalizations nor message level
-     */
-    private $template_id;
-
-	/**
-	 * Optional constructor
-	 *
-	 * @param string|null $template_id The id of a template that you would like
-	 *                                 to use. If you use a template that contains
-	 *                                 a subject and content (either text or html),
-	 *                                 you do not need to specify those at the
-	 *                                 personalizations nor message level
-	 * @throws \SendGrid\Mail\TypeException
-	 */
-    public function __construct($template_id = null)
-    {
-        if (isset($template_id)) {
-            $this->setTemplateId($template_id);
-        }
-    }
-
-    /**
-     * Add a template id to a TemplateId object
-     *
-     * @param string $template_id The id of a template that you would like
-     *                            to use. If you use a template that contains
-     *                            a subject and content (either text or html),
-     *                            you do not need to specify those at the
-     *                            personalizations nor message level
-     *
-     * @throws \SendGrid\Mail\TypeException
-     */
-    public function setTemplateId($template_id)
-    {
-        if (!is_string($template_id)) {
-            throw new TypeException('$template_id must be of type string.');
-        }
-
-        $this->template_id = $template_id;
-    }
-
-    /**
-     * Retrieve a template id from a TemplateId object
-     *
-     * @return string
-     */
-    public function getTemplateId()
-    {
-        return $this->template_id;
-    }
-
-    /**
-     * Return an array representing a TemplateId object for the Twilio SendGrid API
-     *
-     * @return string
-     */
-    public function jsonSerialize()
-    {
-        return $this->getTemplateId();
-    }
-}
diff --git a/libs/sendgrid/lib/mail/To.php b/libs/sendgrid/lib/mail/To.php
deleted file mode 100644
index 1ebdf5c..0000000
--- a/libs/sendgrid/lib/mail/To.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * This helper builds the To object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a To object for the /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class To extends EmailAddress implements \JsonSerializable
-{
-}
diff --git a/libs/sendgrid/lib/mail/TrackingSettings.php b/libs/sendgrid/lib/mail/TrackingSettings.php
deleted file mode 100644
index 90129f4..0000000
--- a/libs/sendgrid/lib/mail/TrackingSettings.php
+++ /dev/null
@@ -1,243 +0,0 @@
-<?php
-/**
- * This helper builds the TrackingSettings object for a /mail/send API call
- */
-
-namespace SendGrid\Mail;
-
-/**
- * This class is used to construct a TrackingSettings object for the
- * /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class TrackingSettings implements \JsonSerializable
-{
-    /** @var $click_tracking ClickTracking object */
-    private $click_tracking;
-    /** @var $open_tracking OpenTracking object */
-    private $open_tracking;
-    /** @var $subscription_tracking SubscriptionTracking object */
-    private $subscription_tracking;
-    /** @var $ganalytics Ganalytics object */
-    private $ganalytics;
-
-    /**
-     * Optional constructor
-     *
-     * @param ClickTracking|null $click_tracking ClickTracking object
-     * @param OpenTracking|null $open_tracking OpenTracking object
-     * @param SubscriptionTracking|null $subscription_tracking SubscriptionTracking
-     *                                                         object
-     * @param Ganalytics|null $ganalytics Ganalytics object
-     */
-    public function __construct(
-        $click_tracking = null,
-        $open_tracking = null,
-        $subscription_tracking = null,
-        $ganalytics = null
-    )
-    {
-        if (isset($click_tracking)) {
-            $this->setClickTracking($click_tracking);
-        }
-        if (isset($open_tracking)) {
-            $this->setOpenTracking($open_tracking);
-        }
-        if (isset($subscription_tracking)) {
-            $this->setSubscriptionTracking($subscription_tracking);
-        }
-        if (isset($ganalytics)) {
-            $this->setGanalytics($ganalytics);
-        }
-    }
-
-    /**
-     * Set the click tracking settings on a TrackingSettings object
-     *
-     * @param ClickTracking|bool $enable The ClickTracking object or an
-     *                                        indication if the setting is enabled
-     * @param bool|null $enable_text Indicates if this setting should be
-     *                                        included in the text/plain portion of
-     *                                        your email
-     */
-    public function setClickTracking($enable, $enable_text = null)
-    {
-        if ($enable instanceof ClickTracking) {
-            $click_tracking = $enable;
-            $this->click_tracking = $click_tracking;
-            return;
-        }
-        $this->click_tracking = new ClickTracking($enable, $enable_text);
-    }
-
-    /**
-     * Retrieve the click tracking settings from a TrackingSettings object
-     *
-     * @return ClickTracking
-     */
-    public function getClickTracking()
-    {
-        return $this->click_tracking;
-    }
-
-    /**
-     * Set the open tracking settings on a TrackingSettings object
-     *
-     * @param OpenTracking|bool $enable The ClickTracking object or an
-     *                                            indication if the setting is
-     *                                            enabled
-     * @param string|null $substitution_tag Allows you to specify a
-     *                                            substitution tag that you can
-     *                                            insert in the body of your email
-     *                                            at a location that you desire.
-     *                                            This tag will be replaced by
-     *                                            the open tracking pixelail
-     *
-     * @return null
-     */
-    public function setOpenTracking($enable, $substitution_tag = null)
-    {
-        if ($enable instanceof OpenTracking) {
-            $open_tracking = $enable;
-            $this->open_tracking = $open_tracking;
-            return;
-        }
-        $this->open_tracking = new OpenTracking($enable, $substitution_tag);
-        return;
-    }
-
-    /**
-     * Retrieve the open tracking settings on a TrackingSettings object
-     *
-     * @return OpenTracking
-     */
-    public function getOpenTracking()
-    {
-        return $this->open_tracking;
-    }
-
-    /**
-     * Set the subscription tracking settings on a TrackingSettings object
-     *
-     * @param SubscriptionTracking|bool $enable The SubscriptionTracking
-     *                                                    object or an indication
-     *                                                    if the setting is enabled
-     * @param string|null $text Text to be appended to the
-     *                                                    email, with the
-     *                                                    subscription tracking
-     *                                                    link. You may control
-     *                                                    where the link is by using
-     *                                                    the tag <% %>
-     * @param string|null $html HTML to be appended to the
-     *                                                    email, with the
-     *                                                    subscription tracking
-     *                                                    link. You may control
-     *                                                    where the link is by using
-     *                                                    the tag <% %>
-     * @param string|null $substitution_tag A tag that will be
-     *                                                    replaced with the
-     *                                                    unsubscribe URL. For
-     *                                                    example:
-     *                                                    [unsubscribe_url]. If this
-     *                                                    parameter is used, it will
-     *                                                    override both the text
-     *                                                    and html parameters. The
-     *                                                    URL of the link will be
-     *                                                    placed at the substitution
-     *                                                    tag’s location, with no
-     *                                                    additional formatting
-     */
-    public function setSubscriptionTracking(
-        $enable,
-        $text = null,
-        $html = null,
-        $substitution_tag = null
-    ) {
-        if ($enable instanceof SubscriptionTracking) {
-            $subscription_tracking = $enable;
-            $this->subscription_tracking = $subscription_tracking;
-            return;
-        }
-        $this->subscription_tracking
-            = new SubscriptionTracking($enable, $text, $html, $substitution_tag);
-    }
-
-    /**
-     * Retrieve the subscription tracking settings from a TrackingSettings object
-     *
-     * @return SubscriptionTracking
-     */
-    public function getSubscriptionTracking()
-    {
-        return $this->subscription_tracking;
-    }
-
-    /**
-     * Set the Google analytics settings on a TrackingSettings object
-     *
-     * @param Ganalytics|bool $enable The Ganalytics object or an indication
-     *                                      if the setting is enabled
-     * @param string|null $utm_source Name of the referrer source. (e.g.
-     *                                      Google, SomeDomain.com, or
-     *                                      Marketing Email)
-     * @param string|null $utm_medium Name of the marketing medium. (e.g.
-     *                                      Email)
-     * @param string|null $utm_term Used to identify any paid keywords
-     * @param string|null $utm_content Used to differentiate your campaign from
-     *                                      advertisements
-     * @param string|null $utm_campaign The name of the campaign
-     */
-    public function setGanalytics(
-        $enable,
-        $utm_source = null,
-        $utm_medium = null,
-        $utm_term = null,
-        $utm_content = null,
-        $utm_campaign = null
-    ) {
-        if ($enable instanceof Ganalytics) {
-            $ganalytics = $enable;
-            $this->ganalytics = $ganalytics;
-            return;
-        }
-        $this->ganalytics = new Ganalytics(
-            $enable,
-            $utm_source,
-            $utm_medium,
-            $utm_term,
-            $utm_content,
-            $utm_campaign
-        );
-    }
-
-    /**
-     * Retrieve the Google analytics settings from a TrackingSettings object
-     *
-     * @return Ganalytics
-     */
-    public function getGanalytics()
-    {
-        return $this->ganalytics;
-    }
-
-    /**
-     * Return an array representing a TrackingSettings object for the Twilio SendGrid API
-     *
-     * @return null|array
-     */
-    public function jsonSerialize()
-    {
-        return array_filter(
-            [
-                'click_tracking' => $this->getClickTracking(),
-                'open_tracking' => $this->getOpenTracking(),
-                'subscription_tracking' => $this->getSubscriptionTracking(),
-                'ganalytics' => $this->getGanalytics()
-            ],
-            function ($value) {
-                return $value !== null;
-            }
-        ) ?: null;
-    }
-}
diff --git a/libs/sendgrid/lib/mail/TypeException.php b/libs/sendgrid/lib/mail/TypeException.php
deleted file mode 100644
index 980b60f..0000000
--- a/libs/sendgrid/lib/mail/TypeException.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-namespace SendGrid\Mail;
-
-class TypeException extends \Exception
-{
-
-}
\ No newline at end of file
diff --git a/libs/sendgrid/lib/stats/Stats.php b/libs/sendgrid/lib/stats/Stats.php
deleted file mode 100644
index fcc537c..0000000
--- a/libs/sendgrid/lib/stats/Stats.php
+++ /dev/null
@@ -1,261 +0,0 @@
-<?php
-/**
- * This helper retrieves stats from a /mail/send API call
- */
-namespace SendGrid\Stats;
-
-/**
- * This class is used to retrieve stats from a /mail/send API call
- *
- * @package SendGrid\Mail
- */
-class Stats
-{
-    const DATE_FORMAT = 'Y-m-d';
-    const OPTIONS_SORT_DIRECTION = ['asc', 'desc'];
-    const OPTIONS_AGGREGATED_BY = ['day', 'week', 'month'];
-
-    // @var string
-    private $startDate;
-
-    // @var string
-    private $endDate;
-
-    // @var string
-    private $aggregatedBy;
-
-	/**
-	 * Stats constructor
-	 *
-	 * @param string $startDate    YYYYMMDD
-	 * @param string $endDate      YYYYMMDD
-	 * @param string $aggregatedBy day|week|month
-	 * @throws \Exception
-	 */
-    public function __construct($startDate, $endDate = null, $aggregatedBy = null)
-    {
-        $this->validateDateFormat($startDate);
-        if (null !== $endDate) {
-            $this->validateDateFormat($endDate);
-        }
-        if (null !== $aggregatedBy) {
-            $this->validateOptions(
-                'aggregatedBy',
-                $aggregatedBy,
-                self::OPTIONS_AGGREGATED_BY
-            );
-        }
-        $this->startDate = $startDate;
-        $this->endDate = $endDate;
-        $this->aggregatedBy = $aggregatedBy;
-    }
-
-    /**
-     * Retrieve global stats parameters, start date, end date and
-     * aggregated by
-     *
-     * @return array
-     */
-    public function getGlobal()
-    {
-        return [
-            'start_date' => $this->startDate,
-            'end_date' => $this->endDate,
-            'aggregated_by' => $this->aggregatedBy
-        ];
-    }
-
-    /**
-     * Retrieve an array of categories
-     *
-     * @param array $categories
-     *
-     * @return array
-     * @throws \Exception
-     */
-    public function getCategory($categories)
-    {
-        $this->validateNumericArray('categories', $categories);
-        $stats = $this->getGlobal();
-        $stats['categories'] = $categories;
-        return $stats;
-    }
-
-    /**
-     * Retrieve global stats parameters, start date, end date and
-     * aggregated for the given set of subusers
-     *
-     * @param array $subusers Subuser accounts
-     *
-     * @return array
-     * @throws \Exception
-     */
-    public function getSubuser($subusers)
-    {
-        $this->validateNumericArray('subusers', $subusers);
-        $stats = $this->getGlobal();
-        $stats['subusers'] = $subusers;
-        return $stats;
-    }
-
-    /**
-     * Retrieve global stats parameters, start date, end date,
-     * aggregated by, sort by metric, sort by direction, limit
-     * and offset
-     *
-     * @param string  $sortByMetric    blocks|bounce_drops|bounces|
-     *                                 clicks|deferred|delivered|
-     *                                 invalid_emails|opens|processed|
-     *                                 requests|spam_report_drops|
-     *                                 spam_reports|unique_clicks|
-     *                                 unique_opens|unsubscribe_drops|
-     *                                 unsubsribes
-     * @param string  $sortByDirection asc|desc
-     * @param integer $limit           The number of results to return
-     * @param integer $offset          The point in the list to begin
-     *                                 retrieving results
-     *
-     * @return array
-     * @throws \Exception
-     */
-    public function getSum(
-        $sortByMetric = 'delivered',
-        $sortByDirection = 'desc',
-        $limit = 5, $offset = 0
-    ) {
-        $this->validateOptions(
-            'sortByDirection',
-            $sortByDirection,
-            self::OPTIONS_SORT_DIRECTION
-        );
-        $this->validateInteger('limit', $limit);
-        $this->validateInteger('offset', $offset);
-        $stats = $this->getGlobal();
-        $stats['sort_by_metric'] = $sortByMetric;
-        $stats['sort_by_direction'] = $sortByDirection;
-        $stats['limit'] = $limit;
-        $stats['offset'] = $offset;
-        return $stats;
-    }
-
-    /**
-     * Retrieve monthly stats by subuser
-     *
-     * @param string  $subuser         Subuser account
-     * @param string  $sortByMetric    blocks|bounce_drops|bounces|
-     *                                 clicks|deferred|delivered|
-     *                                 invalid_emails|opens|processed|
-     *                                 requests|spam_report_drops|
-     *                                 spam_reports|unique_clicks|
-     *                                 unique_opens|unsubscribe_drops|
-     *                                 unsubsribes
-     * @param string  $sortByDirection asc|desc
-     * @param integer $limit           The number of results to return
-     * @param integer $offset          The point in the list to begin
-     *                                 retrieving results
-     *
-     * @return array
-     * @throws \Exception
-     */
-    public function getSubuserMonthly(
-        $subuser = null,
-        $sortByMetric = 'delivered',
-        $sortByDirection = 'desc',
-        $limit = 5,
-        $offset = 0
-    ) {
-        $this->validateOptions(
-            'sortByDirection',
-            $sortByDirection,
-            self::OPTIONS_SORT_DIRECTION
-        );
-        $this->validateInteger('limit', $limit);
-        $this->validateInteger('offset', $offset);
-        return [
-            'date' => $this->startDate,
-            'subuser' => $subuser,
-            'sort_by_metric' => $sortByMetric,
-            'sort_by_direction' => $sortByDirection,
-            'limit' => $limit,
-            'offset' => $offset
-        ];
-    }
-
-    /**
-     * Validate the date format
-     *
-     * @param string $date YYYY-MM-DD
-     *
-     * @return null
-     * @throws \Exception
-     */
-    protected function validateDateFormat($date)
-    {
-        if (false === \DateTime::createFromFormat(self::DATE_FORMAT, $date)) {
-            throw new \Exception('Date must be in the YYYY-MM-DD format.');
-        }
-    }
-
-    /**
-     * Validate options
-     *
-     * @param string $name    Name of option
-     * @param string $value   Value of option
-     * @param array  $options Array of options
-     *
-     * @return null
-     * @throws \Exception
-     */
-    protected function validateOptions($name, $value, $options)
-    {
-        if (!in_array($value, $options)) {
-            throw new \Exception(
-                $name . ' must be one of: ' . implode(', ', $options)
-            );
-        }
-    }
-
-    /**
-     * Validate integer
-     *
-     * @param string  $name  Name as a string
-     * @param integer $value Value as an integer
-     *
-     * @return null
-     * @throws \Exception
-     */
-    protected function validateInteger($name, $value)
-    {
-        if (!is_integer($value)) {
-            throw new \Exception($name . ' must be an integer.');
-        }
-    }
-
-    /**
-     * Validate a numeric array
-     *
-     * @param string $name  Name as a string
-     * @param array  $value Value as an array of integers
-     *
-     * @return null
-     * @throws \Exception
-     */
-    protected function validateNumericArray($name, $value)
-    {
-        if (!is_array($value) || empty($value) || !$this->isNumeric($value)) {
-            throw new \Exception($name . ' must be a non-empty numeric array.');
-        }
-    }
-
-    /**
-     * Determine if the array is numeric
-     *
-     * @param array $array Array of values
-     *
-     * @return bool
-     */
-    protected function isNumeric(array $array)
-    {
-        return array_keys($array) === range(0, count($array) - 1);
-    }
-}
diff --git a/libs/sendgrid/phpcs.xml b/libs/sendgrid/phpcs.xml
deleted file mode 100644
index f646392..0000000
--- a/libs/sendgrid/phpcs.xml
+++ /dev/null
@@ -1,196 +0,0 @@
-<?xml version="1.0"?>
-<ruleset name="PSR2">
-    <description>The PSR-2 coding standard.</description>
-    <arg name="tab-width" value="4"/>
-
-    <!-- 2. General -->
-
-    <!-- 2.1 Basic Coding Standard -->
-
-    <!-- Include the whole PSR-1 standard -->
-    <rule ref="PSR1"/>
-
-    <!-- 2.2 Files -->
-
-    <!-- All PHP files MUST use the Unix LF (linefeed) line ending. -->
-    <rule ref="Generic.Files.LineEndings">
-        <properties>
-            <property name="eolChar" value="\n"/>
-        </properties>
-    </rule>
-
-    <!-- All PHP files MUST end with a single blank line. -->
-    <!-- checked in Files/EndFileNewlineSniff -->
-
-    <!-- The closing ?> tag MUST be omitted from files containing only PHP. -->
-    <!-- checked in Files/ClosingTagSniff -->
-
-    <!-- 2.3 Lines -->
-
-    <!-- The soft limit on line length MUST be 120 characters; automated style checkers MUST warn but MUST NOT error at the soft limit. -->
-    <rule ref="Generic.Files.LineLength">
-        <properties>
-            <property name="lineLimit" value="120"/>
-            <property name="absoluteLineLimit" value="0"/>
-        </properties>
-    </rule>
-
-    <!-- There MUST NOT be trailing whitespace at the end of non-blank lines. -->
-    <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace.StartFile">
-        <severity>0</severity>
-    </rule>
-    <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace.EndFile">
-        <severity>0</severity>
-    </rule>
-    <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace.EmptyLines">
-        <severity>0</severity>
-    </rule>
-
-    <!-- There MUST NOT be more than one statement per line. -->
-    <rule ref="Generic.Formatting.DisallowMultipleStatements"/>
-
-    <!-- 2.4 Indenting -->
-
-    <!-- Code MUST use an indent of 4 spaces, and MUST NOT use tabs for indenting. -->
-    <rule ref="Generic.WhiteSpace.ScopeIndent">
-        <properties>
-            <property name="ignoreIndentationTokens" type="array">
-                <element value="T_COMMENT"/>
-                <element value="T_DOC_COMMENT_OPEN_TAG"/>
-            </property>
-        </properties>
-    </rule>
-    <rule ref="Generic.WhiteSpace.DisallowTabIndent"/>
-
-    <!-- 2.5 Keywords and True/False/Null -->
-
-    <!-- PHP keywords MUST be in lower case. -->
-    <rule ref="Generic.PHP.LowerCaseKeyword"/>
-
-    <!-- The PHP constants true, false, and null MUST be in lower case. -->
-    <rule ref="Generic.PHP.LowerCaseConstant"/>
-
-    <!-- 3. Namespace and Use Declarations -->
-
-    <!-- When present, there MUST be one blank line after the namespace declaration. -->
-    <!-- checked in Namespaces/NamespaceDeclarationSniff -->
-
-    <!-- When present, all use declarations MUST go after the namespace declaration.
-         There MUST be one use keyword per declaration.
-         There MUST be one blank line after the use block. -->
-    <!-- checked in Namespaces/UseDeclarationSniff -->
-
-    <!-- 4. Classes, Properties, and Methods -->
-
-    <!-- 4.1. Extends and Implements -->
-
-    <!-- The extends and implements keywords MUST be declared on the same line as the class name.
-         The opening brace for the class go MUST go on its own line; the closing brace for the class MUST go on the next line after the body.
-         Lists of implements MAY be split across multiple lines, where each subsequent line is indented once. When doing so, the first item in the list MUST be on the next line, and there MUST be only one interface per line. -->
-    <!-- checked in Classes/ClassDeclarationSniff -->
-
-    <!-- 4.2. Properties -->
-
-    <!-- Visibility MUST be declared on all properties.
-         The var keyword MUST NOT be used to declare a property.
-         There MUST NOT be more than one property declared per statement.
-         Property names SHOULD NOT be prefixed with a single underscore to indicate protected or private visibility. -->
-    <!-- checked in Classes/PropertyDeclarationSniff -->
-
-    <!-- 4.3 Methods -->
-
-    <!-- Visibility MUST be declared on all methods. -->
-    <rule ref="Squiz.Scope.MethodScope"/>
-    <rule ref="Squiz.WhiteSpace.ScopeKeywordSpacing"/>
-
-    <!-- Method names SHOULD NOT be prefixed with a single underscore to indicate protected or private visibility. -->
-    <!-- checked in Methods/MethodDeclarationSniff -->
-
-    <!-- Method names MUST NOT be declared with a space after the method name. The opening brace MUST go on its own line, and the closing brace MUST go on the next line following the body. There MUST NOT be a space after the opening parenthesis, and there MUST NOT be a space before the closing parenthesis. -->
-    <!-- checked in Methods/FunctionClosingBraceSniff -->
-    <rule ref="Squiz.Functions.FunctionDeclaration"/>
-    <rule ref="Squiz.Functions.LowercaseFunctionKeywords"/>
-
-    <!-- 4.4 Method Arguments -->
-
-    <!-- In the argument list, there MUST NOT be a space before each comma, and there MUST be one space after each comma. -->
-    <rule ref="Squiz.Functions.FunctionDeclarationArgumentSpacing">
-        <properties>
-            <property name="equalsSpacing" value="1"/>
-        </properties>
-    </rule>
-    <rule ref="Squiz.Functions.FunctionDeclarationArgumentSpacing.SpacingAfterHint">
-        <severity>0</severity>
-    </rule>
-
-    <!-- Method arguments with default values MUST go at the end of the argument list. -->
-    <rule ref="PEAR.Functions.ValidDefaultValue"/>
-
-    <!-- Argument lists MAY be split across multiple lines, where each subsequent line is indented once. When doing so, the first item in the list MUST be on the next line, and there MUST be only one argument per line. When the argument list is split across multiple lines, the closing parenthesis and opening brace MUST be placed together on their own line with one space between them. -->
-    <rule ref="Squiz.Functions.MultiLineFunctionDeclaration"/>
-
-    <!-- 4.5 abstract, final, and static -->
-
-    <!-- When present, the abstract and final declarations MUST precede the visibility declaration.
-         When present, the static declaration MUST come after the visibility declaration. -->
-    <!-- checked in Methods/MethodDeclarationSniff -->
-
-    <!-- 4.6 Method and Function Calls -->
-
-    <!-- When making a method or function call, there MUST NOT be a space between the method or function name and the opening parenthesis, there MUST NOT be a space after the opening parenthesis, and there MUST NOT be a space before the closing parenthesis. In the argument list, there MUST NOT be a space before each comma, and there MUST be one space after each comma.
-    Argument lists MAY be split across multiple lines, where each subsequent line is indented once. When doing so, the first item in the list MUST be on the next line, and there MUST be only one argument per line. -->
-    <rule ref="Generic.Functions.FunctionCallArgumentSpacing"/>
-    <rule ref="PSR2.Methods.FunctionCallSignature.SpaceAfterCloseBracket">
-        <severity>0</severity>
-    </rule>
-    <rule ref="PSR2.Methods.FunctionCallSignature.OpeningIndent">
-        <severity>0</severity>
-    </rule>
-
-    <!-- 5. Control Structures -->
-
-    <!-- The general style rules for control structures are as follows:
-    There MUST be one space after the control structure keyword
-    There MUST NOT be a space after the opening parenthesis
-    There MUST NOT be a space before the closing parenthesis
-    There MUST be one space between the closing parenthesis and the opening brace
-    The structure body MUST be indented once
-    The closing brace MUST be on the next line after the body -->
-    <rule ref="Squiz.ControlStructures.ControlSignature"/>
-    <rule ref="Squiz.WhiteSpace.ControlStructureSpacing.SpacingAfterOpen" />
-    <rule ref="Squiz.WhiteSpace.ControlStructureSpacing.SpacingBeforeClose" />
-    <rule ref="Squiz.WhiteSpace.ScopeClosingBrace"/>
-    <rule ref="Squiz.ControlStructures.ForEachLoopDeclaration"/>
-    <rule ref="Squiz.ControlStructures.ForLoopDeclaration"/>
-    <rule ref="Squiz.ControlStructures.LowercaseDeclaration"/>
-    <!-- checked in ControlStructures/ControlStructureSpacingSniff -->
-
-    <!-- exclude this message as it is already checked Generic.PHP.LowerCaseKeyword -->
-    <rule ref="Squiz.ControlStructures.ForEachLoopDeclaration.AsNotLower">
-        <severity>0</severity>
-    </rule>
-
-    <!-- The body of each structure MUST be enclosed by braces. This standardizes how the structures look, and reduces the likelihood of introducing errors as new lines get added to the body. -->
-    <rule ref="Generic.ControlStructures.InlineControlStructure"/>
-
-    <!-- 5.1. if, elseif, else -->
-
-    <!-- The keyword elseif SHOULD be used instead of else if so that all control keywords look like single words. -->
-    <!-- checked in ControlStructures/ElseIfDeclarationSniff -->
-
-    <!-- 5.2. switch, case -->
-
-    <!-- The case statement MUST be indented once from switch, and the break keyword (or other terminating keyword) MUST be indented at the same level as the case body. There MUST be a comment such as // no break when fall-through is intentional in a non-empty case body. -->
-    <!-- checked in ControlStructures/SwitchDeclarationSniff -->
-
-    <!-- 6. Closures -->
-
-    <!-- Closures MUST be declared with a space after the function keyword, and a space before and after the use keyword.
-    The opening brace MUST go on the same line, and the closing brace MUST go on the next line following the body.
-    There MUST NOT be a space after the opening parenthesis of the argument list or variable list, and there MUST NOT be a space before the closing parenthesis of the argument list or variable list.
-    In the argument list and variable list, there MUST NOT be a space before each comma, and there MUST be one space after each comma.
-    Closure arguments with default values MUST go at the end of the argument list.
-    Argument lists and variable lists MAY be split across multiple lines, where each subsequent line is indented once. When doing so, the first item in the list MUST be on the next line, and there MUST be only one argument or variable per line.
-    When the ending list (whether or arguments or variables) is split across multiple lines, the closing parenthesis and opening brace MUST be placed together on their own line with one space between them. -->
-    <!-- checked in Squiz.Functions.MultiLineFunctionDeclaration -->
-</ruleset>
\ No newline at end of file
diff --git a/libs/sendgrid/sendgrid-php.php b/libs/sendgrid/sendgrid-php.php
deleted file mode 100644
index a17aebb..0000000
--- a/libs/sendgrid/sendgrid-php.php
+++ /dev/null
@@ -1,3 +0,0 @@
-<?php
-require __DIR__ . '/vendor/autoload.php';
-?>
\ No newline at end of file
diff --git a/libs/sendgrid/vendor/autoload.php b/libs/sendgrid/vendor/autoload.php
deleted file mode 100644
index 5c2bf3b..0000000
--- a/libs/sendgrid/vendor/autoload.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-// autoload.php @generated by Composer
-
-require_once __DIR__ . '/composer/autoload_real.php';
-
-return ComposerAutoloaderInite864228999a8fa8c85d9dad74b3be5af::getLoader();
diff --git a/libs/sendgrid/vendor/composer/ClassLoader.php b/libs/sendgrid/vendor/composer/ClassLoader.php
deleted file mode 100644
index fce8549..0000000
--- a/libs/sendgrid/vendor/composer/ClassLoader.php
+++ /dev/null
@@ -1,445 +0,0 @@
-<?php
-
-/*
- * This file is part of Composer.
- *
- * (c) Nils Adermann <naderman@naderman.de>
- *     Jordi Boggiano <j.boggiano@seld.be>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Composer\Autoload;
-
-/**
- * ClassLoader implements a PSR-0, PSR-4 and classmap class loader.
- *
- *     $loader = new \Composer\Autoload\ClassLoader();
- *
- *     // register classes with namespaces
- *     $loader->add('Symfony\Component', __DIR__.'/component');
- *     $loader->add('Symfony',           __DIR__.'/framework');
- *
- *     // activate the autoloader
- *     $loader->register();
- *
- *     // to enable searching the include path (eg. for PEAR packages)
- *     $loader->setUseIncludePath(true);
- *
- * In this example, if you try to use a class in the Symfony\Component
- * namespace or one of its children (Symfony\Component\Console for instance),
- * the autoloader will first look for the class under the component/
- * directory, and it will then fallback to the framework/ directory if not
- * found before giving up.
- *
- * This class is loosely based on the Symfony UniversalClassLoader.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Jordi Boggiano <j.boggiano@seld.be>
- * @see    http://www.php-fig.org/psr/psr-0/
- * @see    http://www.php-fig.org/psr/psr-4/
- */
-class ClassLoader
-{
-    // PSR-4
-    private $prefixLengthsPsr4 = array();
-    private $prefixDirsPsr4 = array();
-    private $fallbackDirsPsr4 = array();
-
-    // PSR-0
-    private $prefixesPsr0 = array();
-    private $fallbackDirsPsr0 = array();
-
-    private $useIncludePath = false;
-    private $classMap = array();
-    private $classMapAuthoritative = false;
-    private $missingClasses = array();
-    private $apcuPrefix;
-
-    public function getPrefixes()
-    {
-        if (!empty($this->prefixesPsr0)) {
-            return call_user_func_array('array_merge', $this->prefixesPsr0);
-        }
-
-        return array();
-    }
-
-    public function getPrefixesPsr4()
-    {
-        return $this->prefixDirsPsr4;
-    }
-
-    public function getFallbackDirs()
-    {
-        return $this->fallbackDirsPsr0;
-    }
-
-    public function getFallbackDirsPsr4()
-    {
-        return $this->fallbackDirsPsr4;
-    }
-
-    public function getClassMap()
-    {
-        return $this->classMap;
-    }
-
-    /**
-     * @param array $classMap Class to filename map
-     */
-    public function addClassMap(array $classMap)
-    {
-        if ($this->classMap) {
-            $this->classMap = array_merge($this->classMap, $classMap);
-        } else {
-            $this->classMap = $classMap;
-        }
-    }
-
-    /**
-     * Registers a set of PSR-0 directories for a given prefix, either
-     * appending or prepending to the ones previously set for this prefix.
-     *
-     * @param string       $prefix  The prefix
-     * @param array|string $paths   The PSR-0 root directories
-     * @param bool         $prepend Whether to prepend the directories
-     */
-    public function add($prefix, $paths, $prepend = false)
-    {
-        if (!$prefix) {
-            if ($prepend) {
-                $this->fallbackDirsPsr0 = array_merge(
-                    (array) $paths,
-                    $this->fallbackDirsPsr0
-                );
-            } else {
-                $this->fallbackDirsPsr0 = array_merge(
-                    $this->fallbackDirsPsr0,
-                    (array) $paths
-                );
-            }
-
-            return;
-        }
-
-        $first = $prefix[0];
-        if (!isset($this->prefixesPsr0[$first][$prefix])) {
-            $this->prefixesPsr0[$first][$prefix] = (array) $paths;
-
-            return;
-        }
-        if ($prepend) {
-            $this->prefixesPsr0[$first][$prefix] = array_merge(
-                (array) $paths,
-                $this->prefixesPsr0[$first][$prefix]
-            );
-        } else {
-            $this->prefixesPsr0[$first][$prefix] = array_merge(
-                $this->prefixesPsr0[$first][$prefix],
-                (array) $paths
-            );
-        }
-    }
-
-    /**
-     * Registers a set of PSR-4 directories for a given namespace, either
-     * appending or prepending to the ones previously set for this namespace.
-     *
-     * @param string       $prefix  The prefix/namespace, with trailing '\\'
-     * @param array|string $paths   The PSR-4 base directories
-     * @param bool         $prepend Whether to prepend the directories
-     *
-     * @throws \InvalidArgumentException
-     */
-    public function addPsr4($prefix, $paths, $prepend = false)
-    {
-        if (!$prefix) {
-            // Register directories for the root namespace.
-            if ($prepend) {
-                $this->fallbackDirsPsr4 = array_merge(
-                    (array) $paths,
-                    $this->fallbackDirsPsr4
-                );
-            } else {
-                $this->fallbackDirsPsr4 = array_merge(
-                    $this->fallbackDirsPsr4,
-                    (array) $paths
-                );
-            }
-        } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
-            // Register directories for a new namespace.
-            $length = strlen($prefix);
-            if ('\\' !== $prefix[$length - 1]) {
-                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
-            }
-            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
-            $this->prefixDirsPsr4[$prefix] = (array) $paths;
-        } elseif ($prepend) {
-            // Prepend directories for an already registered namespace.
-            $this->prefixDirsPsr4[$prefix] = array_merge(
-                (array) $paths,
-                $this->prefixDirsPsr4[$prefix]
-            );
-        } else {
-            // Append directories for an already registered namespace.
-            $this->prefixDirsPsr4[$prefix] = array_merge(
-                $this->prefixDirsPsr4[$prefix],
-                (array) $paths
-            );
-        }
-    }
-
-    /**
-     * Registers a set of PSR-0 directories for a given prefix,
-     * replacing any others previously set for this prefix.
-     *
-     * @param string       $prefix The prefix
-     * @param array|string $paths  The PSR-0 base directories
-     */
-    public function set($prefix, $paths)
-    {
-        if (!$prefix) {
-            $this->fallbackDirsPsr0 = (array) $paths;
-        } else {
-            $this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
-        }
-    }
-
-    /**
-     * Registers a set of PSR-4 directories for a given namespace,
-     * replacing any others previously set for this namespace.
-     *
-     * @param string       $prefix The prefix/namespace, with trailing '\\'
-     * @param array|string $paths  The PSR-4 base directories
-     *
-     * @throws \InvalidArgumentException
-     */
-    public function setPsr4($prefix, $paths)
-    {
-        if (!$prefix) {
-            $this->fallbackDirsPsr4 = (array) $paths;
-        } else {
-            $length = strlen($prefix);
-            if ('\\' !== $prefix[$length - 1]) {
-                throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
-            }
-            $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
-            $this->prefixDirsPsr4[$prefix] = (array) $paths;
-        }
-    }
-
-    /**
-     * Turns on searching the include path for class files.
-     *
-     * @param bool $useIncludePath
-     */
-    public function setUseIncludePath($useIncludePath)
-    {
-        $this->useIncludePath = $useIncludePath;
-    }
-
-    /**
-     * Can be used to check if the autoloader uses the include path to check
-     * for classes.
-     *
-     * @return bool
-     */
-    public function getUseIncludePath()
-    {
-        return $this->useIncludePath;
-    }
-
-    /**
-     * Turns off searching the prefix and fallback directories for classes
-     * that have not been registered with the class map.
-     *
-     * @param bool $classMapAuthoritative
-     */
-    public function setClassMapAuthoritative($classMapAuthoritative)
-    {
-        $this->classMapAuthoritative = $classMapAuthoritative;
-    }
-
-    /**
-     * Should class lookup fail if not found in the current class map?
-     *
-     * @return bool
-     */
-    public function isClassMapAuthoritative()
-    {
-        return $this->classMapAuthoritative;
-    }
-
-    /**
-     * APCu prefix to use to cache found/not-found classes, if the extension is enabled.
-     *
-     * @param string|null $apcuPrefix
-     */
-    public function setApcuPrefix($apcuPrefix)
-    {
-        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
-    }
-
-    /**
-     * The APCu prefix in use, or null if APCu caching is not enabled.
-     *
-     * @return string|null
-     */
-    public function getApcuPrefix()
-    {
-        return $this->apcuPrefix;
-    }
-
-    /**
-     * Registers this instance as an autoloader.
-     *
-     * @param bool $prepend Whether to prepend the autoloader or not
-     */
-    public function register($prepend = false)
-    {
-        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
-    }
-
-    /**
-     * Unregisters this instance as an autoloader.
-     */
-    public function unregister()
-    {
-        spl_autoload_unregister(array($this, 'loadClass'));
-    }
-
-    /**
-     * Loads the given class or interface.
-     *
-     * @param  string    $class The name of the class
-     * @return bool|null True if loaded, null otherwise
-     */
-    public function loadClass($class)
-    {
-        if ($file = $this->findFile($class)) {
-            includeFile($file);
-
-            return true;
-        }
-    }
-
-    /**
-     * Finds the path to the file where the class is defined.
-     *
-     * @param string $class The name of the class
-     *
-     * @return string|false The path if found, false otherwise
-     */
-    public function findFile($class)
-    {
-        // class map lookup
-        if (isset($this->classMap[$class])) {
-            return $this->classMap[$class];
-        }
-        if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
-            return false;
-        }
-        if (null !== $this->apcuPrefix) {
-            $file = apcu_fetch($this->apcuPrefix.$class, $hit);
-            if ($hit) {
-                return $file;
-            }
-        }
-
-        $file = $this->findFileWithExtension($class, '.php');
-
-        // Search for Hack files if we are running on HHVM
-        if (false === $file && defined('HHVM_VERSION')) {
-            $file = $this->findFileWithExtension($class, '.hh');
-        }
-
-        if (null !== $this->apcuPrefix) {
-            apcu_add($this->apcuPrefix.$class, $file);
-        }
-
-        if (false === $file) {
-            // Remember that this class does not exist.
-            $this->missingClasses[$class] = true;
-        }
-
-        return $file;
-    }
-
-    private function findFileWithExtension($class, $ext)
-    {
-        // PSR-4 lookup
-        $logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext;
-
-        $first = $class[0];
-        if (isset($this->prefixLengthsPsr4[$first])) {
-            $subPath = $class;
-            while (false !== $lastPos = strrpos($subPath, '\\')) {
-                $subPath = substr($subPath, 0, $lastPos);
-                $search = $subPath . '\\';
-                if (isset($this->prefixDirsPsr4[$search])) {
-                    $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
-                    foreach ($this->prefixDirsPsr4[$search] as $dir) {
-                        if (file_exists($file = $dir . $pathEnd)) {
-                            return $file;
-                        }
-                    }
-                }
-            }
-        }
-
-        // PSR-4 fallback dirs
-        foreach ($this->fallbackDirsPsr4 as $dir) {
-            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
-                return $file;
-            }
-        }
-
-        // PSR-0 lookup
-        if (false !== $pos = strrpos($class, '\\')) {
-            // namespaced class name
-            $logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
-                . strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR);
-        } else {
-            // PEAR-like class name
-            $logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR) . $ext;
-        }
-
-        if (isset($this->prefixesPsr0[$first])) {
-            foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
-                if (0 === strpos($class, $prefix)) {
-                    foreach ($dirs as $dir) {
-                        if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
-                            return $file;
-                        }
-                    }
-                }
-            }
-        }
-
-        // PSR-0 fallback dirs
-        foreach ($this->fallbackDirsPsr0 as $dir) {
-            if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
-                return $file;
-            }
-        }
-
-        // PSR-0 include paths.
-        if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
-            return $file;
-        }
-
-        return false;
-    }
-}
-
-/**
- * Scope isolated include.
- *
- * Prevents access to $this/self from included files.
- */
-function includeFile($file)
-{
-    include $file;
-}
diff --git a/libs/sendgrid/vendor/composer/LICENSE b/libs/sendgrid/vendor/composer/LICENSE
deleted file mode 100644
index f27399a..0000000
--- a/libs/sendgrid/vendor/composer/LICENSE
+++ /dev/null
@@ -1,21 +0,0 @@
-
-Copyright (c) Nils Adermann, Jordi Boggiano
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is furnished
-to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-
diff --git a/libs/sendgrid/vendor/composer/autoload_classmap.php b/libs/sendgrid/vendor/composer/autoload_classmap.php
deleted file mode 100644
index 7a91153..0000000
--- a/libs/sendgrid/vendor/composer/autoload_classmap.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-// autoload_classmap.php @generated by Composer
-
-$vendorDir = dirname(dirname(__FILE__));
-$baseDir = dirname($vendorDir);
-
-return array(
-);
diff --git a/libs/sendgrid/vendor/composer/autoload_files.php b/libs/sendgrid/vendor/composer/autoload_files.php
deleted file mode 100644
index 14cbbaf..0000000
--- a/libs/sendgrid/vendor/composer/autoload_files.php
+++ /dev/null
@@ -1,12 +0,0 @@
-<?php
-
-// autoload_files.php @generated by Composer
-
-$vendorDir = dirname(dirname(__FILE__));
-$baseDir = dirname($vendorDir);
-
-return array(
-    'fe81f4db7ca976f7e113f097866cf957' => $baseDir . '/lib/BaseInterface.php',
-    '3f8bdd3b35094c73a26f0106e3c0f8b2' => $baseDir . '/lib/SendGrid.php',
-    '0596c9fb5a9dba3cf8abc2fdaa05141c' => $baseDir . '/lib/TwilioEmail.php',
-);
diff --git a/libs/sendgrid/vendor/composer/autoload_namespaces.php b/libs/sendgrid/vendor/composer/autoload_namespaces.php
deleted file mode 100644
index b7fc012..0000000
--- a/libs/sendgrid/vendor/composer/autoload_namespaces.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-// autoload_namespaces.php @generated by Composer
-
-$vendorDir = dirname(dirname(__FILE__));
-$baseDir = dirname($vendorDir);
-
-return array(
-);
diff --git a/libs/sendgrid/vendor/composer/autoload_psr4.php b/libs/sendgrid/vendor/composer/autoload_psr4.php
deleted file mode 100644
index bb93ed6..0000000
--- a/libs/sendgrid/vendor/composer/autoload_psr4.php
+++ /dev/null
@@ -1,13 +0,0 @@
-<?php
-
-// autoload_psr4.php @generated by Composer
-
-$vendorDir = dirname(dirname(__FILE__));
-$baseDir = dirname($vendorDir);
-
-return array(
-    'SendGrid\\Stats\\' => array($baseDir . '/lib/stats'),
-    'SendGrid\\Mail\\' => array($baseDir . '/lib/mail'),
-    'SendGrid\\Contacts\\' => array($baseDir . '/lib/contacts'),
-    'SendGrid\\' => array($vendorDir . '/sendgrid/php-http-client/lib'),
-);
diff --git a/libs/sendgrid/vendor/composer/autoload_real.php b/libs/sendgrid/vendor/composer/autoload_real.php
deleted file mode 100644
index d0f84f5..0000000
--- a/libs/sendgrid/vendor/composer/autoload_real.php
+++ /dev/null
@@ -1,73 +0,0 @@
-<?php
-
-// autoload_real.php @generated by Composer
-
-class ComposerAutoloaderInite864228999a8fa8c85d9dad74b3be5af
-{
-    private static $loader;
-
-    public static function loadClassLoader($class)
-    {
-        if ('Composer\Autoload\ClassLoader' === $class) {
-            require __DIR__ . '/ClassLoader.php';
-        }
-    }
-
-    /**
-     * @return \Composer\Autoload\ClassLoader
-     */
-    public static function getLoader()
-    {
-        if (null !== self::$loader) {
-            return self::$loader;
-        }
-
-        spl_autoload_register(array('ComposerAutoloaderInite864228999a8fa8c85d9dad74b3be5af', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
-        spl_autoload_unregister(array('ComposerAutoloaderInite864228999a8fa8c85d9dad74b3be5af', 'loadClassLoader'));
-
-        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
-        if ($useStaticLoader) {
-            require_once __DIR__ . '/autoload_static.php';
-
-            call_user_func(\Composer\Autoload\ComposerStaticInite864228999a8fa8c85d9dad74b3be5af::getInitializer($loader));
-        } else {
-            $map = require __DIR__ . '/autoload_namespaces.php';
-            foreach ($map as $namespace => $path) {
-                $loader->set($namespace, $path);
-            }
-
-            $map = require __DIR__ . '/autoload_psr4.php';
-            foreach ($map as $namespace => $path) {
-                $loader->setPsr4($namespace, $path);
-            }
-
-            $classMap = require __DIR__ . '/autoload_classmap.php';
-            if ($classMap) {
-                $loader->addClassMap($classMap);
-            }
-        }
-
-        $loader->register(true);
-
-        if ($useStaticLoader) {
-            $includeFiles = Composer\Autoload\ComposerStaticInite864228999a8fa8c85d9dad74b3be5af::$files;
-        } else {
-            $includeFiles = require __DIR__ . '/autoload_files.php';
-        }
-        foreach ($includeFiles as $fileIdentifier => $file) {
-            composerRequiree864228999a8fa8c85d9dad74b3be5af($fileIdentifier, $file);
-        }
-
-        return $loader;
-    }
-}
-
-function composerRequiree864228999a8fa8c85d9dad74b3be5af($fileIdentifier, $file)
-{
-    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
-        require $file;
-
-        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
-    }
-}
diff --git a/libs/sendgrid/vendor/composer/autoload_static.php b/libs/sendgrid/vendor/composer/autoload_static.php
deleted file mode 100644
index c275941..0000000
--- a/libs/sendgrid/vendor/composer/autoload_static.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-
-// autoload_static.php @generated by Composer
-
-namespace Composer\Autoload;
-
-class ComposerStaticInite864228999a8fa8c85d9dad74b3be5af
-{
-    public static $files = array (
-        'fe81f4db7ca976f7e113f097866cf957' => __DIR__ . '/../..' . '/lib/BaseInterface.php',
-        '3f8bdd3b35094c73a26f0106e3c0f8b2' => __DIR__ . '/../..' . '/lib/SendGrid.php',
-        '0596c9fb5a9dba3cf8abc2fdaa05141c' => __DIR__ . '/../..' . '/lib/TwilioEmail.php',
-    );
-
-    public static $prefixLengthsPsr4 = array (
-        'S' => 
-        array (
-            'SendGrid\\Stats\\' => 15,
-            'SendGrid\\Mail\\' => 14,
-            'SendGrid\\Contacts\\' => 18,
-            'SendGrid\\' => 9,
-        ),
-    );
-
-    public static $prefixDirsPsr4 = array (
-        'SendGrid\\Stats\\' => 
-        array (
-            0 => __DIR__ . '/../..' . '/lib/stats',
-        ),
-        'SendGrid\\Mail\\' => 
-        array (
-            0 => __DIR__ . '/../..' . '/lib/mail',
-        ),
-        'SendGrid\\Contacts\\' => 
-        array (
-            0 => __DIR__ . '/../..' . '/lib/contacts',
-        ),
-        'SendGrid\\' => 
-        array (
-            0 => __DIR__ . '/..' . '/sendgrid/php-http-client/lib',
-        ),
-    );
-
-    public static function getInitializer(ClassLoader $loader)
-    {
-        return \Closure::bind(function () use ($loader) {
-            $loader->prefixLengthsPsr4 = ComposerStaticInite864228999a8fa8c85d9dad74b3be5af::$prefixLengthsPsr4;
-            $loader->prefixDirsPsr4 = ComposerStaticInite864228999a8fa8c85d9dad74b3be5af::$prefixDirsPsr4;
-
-        }, null, ClassLoader::class);
-    }
-}
diff --git a/libs/sendgrid/vendor/composer/installed.json b/libs/sendgrid/vendor/composer/installed.json
deleted file mode 100644
index 38fa080..0000000
--- a/libs/sendgrid/vendor/composer/installed.json
+++ /dev/null
@@ -1,56 +0,0 @@
-[
-    {
-        "name": "sendgrid/php-http-client",
-        "version": "3.10.6",
-        "version_normalized": "3.10.6.0",
-        "source": {
-            "type": "git",
-            "url": "https://github.com/sendgrid/php-http-client.git",
-            "reference": "1c97ab5475b0aa98032ea3f89d7f12453469fc08"
-        },
-        "dist": {
-            "type": "zip",
-            "url": "https://api.github.com/repos/sendgrid/php-http-client/zipball/1c97ab5475b0aa98032ea3f89d7f12453469fc08",
-            "reference": "1c97ab5475b0aa98032ea3f89d7f12453469fc08",
-            "shasum": ""
-        },
-        "require": {
-            "php": ">=5.6"
-        },
-        "require-dev": {
-            "phpunit/phpunit": "~4.4",
-            "squizlabs/php_codesniffer": "~2.0"
-        },
-        "time": "2020-04-29T19:42:26+00:00",
-        "type": "library",
-        "installation-source": "dist",
-        "autoload": {
-            "psr-4": {
-                "SendGrid\\": "lib/"
-            }
-        },
-        "notification-url": "https://packagist.org/downloads/",
-        "license": [
-            "MIT"
-        ],
-        "authors": [
-            {
-                "name": "Matt Bernier",
-                "email": "mbernier@twilio.com"
-            },
-            {
-                "name": "Elmer Thomas",
-                "email": "ethomas@twilio.com"
-            }
-        ],
-        "description": "HTTP REST client, simplified for PHP",
-        "homepage": "http://github.com/sendgrid/php-http-client",
-        "keywords": [
-            "api",
-            "fluent",
-            "http",
-            "rest",
-            "sendgrid"
-        ]
-    }
-]
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/.codeclimate.yml b/libs/sendgrid/vendor/sendgrid/php-http-client/.codeclimate.yml
deleted file mode 100644
index 0bd0385..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/.codeclimate.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-engines:
-  duplication:
-    enabled: true
-    config:
-      languages:
-      - "php"
-  phpcodesniffer:
-    enabled: true
-    config:
-      file_extensions: "php"
-      standard: "PSR1,PSR2"
-ratings:
-  paths:
-  - "**.php"
-exclude_paths:
-  - "examples/**/*"
-  - "test/**/*"
-  - "vendor/**/*"
\ No newline at end of file
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/CHANGELOG.md b/libs/sendgrid/vendor/sendgrid/php-http-client/CHANGELOG.md
deleted file mode 100644
index a7b9cfc..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/CHANGELOG.md
+++ /dev/null
@@ -1,180 +0,0 @@
-# Change Log
-All notable changes to this project will be documented in this file.
-
-This project adheres to [Semantic Versioning](http://semver.org/).
-
-[2020-04-29] Version 3.10.6
----------------------------
-**Library - Fix**
-- [PR #141](https://github.com/sendgrid/php-http-client/pull/141): add the singular 'suppression' method. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-
-[2020-03-18] Version 3.10.5
----------------------------
-**Library - Docs**
-- [PR #111](https://github.com/sendgrid/php-http-client/pull/111): run .md files through grammarly. Thanks to [@redbrickone](https://github.com/redbrickone)!
-
-
-[2020-03-04] Version 3.10.4
----------------------------
-**Library - Chore**
-- [PR #140](https://github.com/sendgrid/php-http-client/pull/140): add PHP 7.4 to Travis and test with lowest dependencies. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-
-[2020-02-19] Version 3.10.3
----------------------------
-**Library - Fix**
-- [PR #134](https://github.com/sendgrid/php-http-client/pull/134): Change contactsdb to marketing api #133. Thanks to [@murich](https://github.com/murich)!
-
-
-[2020-01-22] Version 3.10.2
----------------------------
-**Library - Docs**
-- [PR #139](https://github.com/sendgrid/php-http-client/pull/139): baseline all the templated markdown docs. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-
-
-[2020-01-09] Version 3.10.1
----------------------------
-**Library - Chore**
-- [PR #138](https://github.com/sendgrid/php-http-client/pull/138): prep the repo for automated releasing. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-- [PR #135](https://github.com/sendgrid/php-http-client/pull/135): add more PHP versions to .travis.yml. Thanks to [@PaiizZ](https://github.com/PaiizZ)!
-
-**Library - Docs**
-- [PR #122](https://github.com/sendgrid/php-http-client/pull/122): fix grammar in Readme. Thanks to [@jmauerhan](https://github.com/jmauerhan)!
-
-
-[2019-12-11] Version 3.10.0
----------------------------
-
-**Library - Fix**
-- [PR #99](https://github.com/sendgrid/php-http-client/pull/99): Throw InvalidRequest exception on invalid CURL request. Thanks to [@alextech](https://github.com/alextech)!
-
-**Library - Docs**
-- [PR #102](https://github.com/sendgrid/php-http-client/pull/102): Create a Use Cases Directory. Thanks to [@ProZsolt](https://github.com/ProZsolt)!
-- [PR #106](https://github.com/sendgrid/php-http-client/pull/106): Only mention the lowest required PHP version in README. Thanks to [@svenluijten](https://github.com/svenluijten)!
-
-## [3.9.6] - 2018-04-10
-### Added
-- PR [#98](https://github.com/sendgrid/php-http-client/pull/98). Updated documention of `Client.php` using PHPDoc.
-- Thanks to [Martijn Melchers](https://github.com/martijnmelchers) for the pull request!
-
-## [3.9.5] - 2018-03-26
-### Added
-- Fixes [#94](https://github.com/sendgrid/php-http-client/issues/94), PR [#95](https://github.com/sendgrid/php-http-client/pull/95): CreateCurlOptions method regression tests
-- Thanks to [Alexandr Ivanov](https://github.com/misantron) for the pull request!
-
-## [3.9.4] - 2018-03-22
-### Fixed
-- Fixes [#586](https://github.com/sendgrid/sendgrid-php/issues/586), PR [#96](https://github.com/sendgrid/php-http-client/pull/96): Fix constructor function signature regression.
-
-## [3.9.3] - 2018-03-11
-### Fixed
-- Fixes [#584](https://github.com/sendgrid/sendgrid-php/issues/584), PR [#93](https://github.com/sendgrid/php-http-client/pull/93): Don't overwrite headers set from upstream dependencies.
-
-## [3.9.2] - 2018-03-10
-### Fixed
-- Fixes [#12](https://github.com/sendgrid/php-http-client/issues/12), PR [#91](https://github.com/sendgrid/php-http-client/pull/91): Curl Options broken as array merge does not preserve keys. 
-
-## [3.9.1] - 2018-03-09
-### Fixed
-- Fixes [#88](https://github.com/sendgrid/php-http-client/issues/88), PR [#89](https://github.com/sendgrid/php-http-client/pull/89): Restore missing function 'prepareResponse' due to bad previous merge. 
-
-## [3.9.0] - 2018-03-08
-### Added
-- PR [#24](https://github.com/sendgrid/php-http-client/pull/24): implements sending concurrent requests with curl multi, thanks to [Tuan Nguyen](https://github.com/lightbringer1991) for the PR!
-- PR [#25](https://github.com/sendgrid/php-http-client/pull/25): Add description how install php-http-client manually, thanks to [Ivan](https://github.com/janczer) for the PR!
-- PR [#28](https://github.com/sendgrid/php-http-client/pull/28): Create code of conduct, thanks to [Alexander Androsyuk](https://github.com/alex2sat) for the PR!
-- Closes [#32](https://github.com/sendgrid/php-http-client/issues/32), PR [#33](https://github.com/sendgrid/php-http-client/pull/33): Added TROUBLESHOOTING + Debug Info, thanks to [Braunson Yager](https://github.com/Braunson) for the PR!
-- Closes [#35](https://github.com/sendgrid/php-http-client/issues/35), PR [#37](https://github.com/sendgrid/php-http-client/pull/37): Update README badges, thanks to [Tim Harshman](https://github.com/goteamtim) for the PR!
-- Closes [#34](https://github.com/sendgrid/php-http-client/issues/34), PR [#38](https://github.com/sendgrid/php-http-client/pull/38): Update .md files with hyphen vs underscore for page links to enhance SEO, thanks to [Eric Kates](https://github.com/positronek) for the PR!
-- Closes [#39](https://github.com/sendgrid/php-http-client/issues/39), PR [#40](https://github.com/sendgrid/php-http-client/pull/40): Added Packagist badge to README, thanks to [Rakshan Shetty](https://github.com/rakshans1) for the PR!
-- PR [#41](https://github.com/sendgrid/php-http-client/pull/41): Add table of contents in README.md, thanks to [thepriefy](https://github.com/thepriefy) for the PR!
-- PR [#42](https://github.com/sendgrid/php-http-client/pull/42): Add SendGrid logo at the top of README.md, thanks to [thepriefy](https://github.com/thepriefy) for the PR!
-- PR [#43](https://github.com/sendgrid/php-http-client/pull/43): Add License section to the README.md, thanks to [thepriefy](https://github.com/thepriefy) for the PR!
-- Closes [#46](https://github.com/sendgrid/php-http-client/issues/46), PR [#47](https://github.com/sendgrid/php-http-client/pull/47): Create Pull Request Template, thanks to [Paweł Lewtak](https://github.com/pawel-lewtak) for the PR!
-- Closes [#48](https://github.com/sendgrid/php-http-client/issues/48), PR [#51](https://github.com/sendgrid/php-http-client/pull/51): Added example file, updated .gitignore and README, thanks to [Diego Rocha](https://github.com/dhsrocha) for the PR!
-- PR [#53](https://github.com/sendgrid/php-http-client/pull/53): README and usage example update, thanks to [Alexandr Ivanov](https://github.com/misantron) for the PR!
-- PR [#55](https://github.com/sendgrid/php-http-client/pull/55): Code climate config, thanks to [Alexandr Ivanov](https://github.com/misantron) for the PR!
-- Closes [#58](https://github.com/sendgrid/php-http-client/pull/58), PR [#60](https://github.com/sendgrid/php-http-client/pull/60): Adds unit test for checking file existence in repo, thanks to [Michele Orselli](https://github.com/micheleorselli) for the PR!
-- Closes [#57](https://github.com/sendgrid/php-http-client/pull/57), PR [#61](https://github.com/sendgrid/php-http-client/pull/61): Adds unit test for checking year on licence, thanks to [Michele Orselli](https://github.com/micheleorselli) for the PR!
-- Closes [#50](https://github.com/sendgrid/php-http-client/issues/50), PR [#62](https://github.com/sendgrid/php-http-client/pull/62): Create USAGE.md, thanks to [Nitanshu](https://github.com/nvzard) for the PR!
-- Closes [#57](https://github.com/sendgrid/php-http-client/issues/57), PR [#66](https://github.com/sendgrid/php-http-client/pull/66): Add unit test for license year, thanks to [Alex](https://github.com/pushkyn) for the PR!
-- Closes [#67](https://github.com/sendgrid/php-http-client/issues/67), PR [#68](https://github.com/sendgrid/php-http-client/pull/68): Add CodeCov support to .travis.yml, thanks to [Manjiri Tapaswi](https://github.com/mptap) for the PR!
-- Closes [#49](https://github.com/sendgrid/php-http-client/issues/49), PR [#73](https://github.com/sendgrid/php-http-client/pull/73): Create Dockerfile, thanks to [Jessica Mauerhan](https://github.com/jmauerhan) for the PR!
-- Closes [#76](https://github.com/sendgrid/php-http-client/issues/76), PR [#78](https://github.com/sendgrid/php-http-client/pull/78): Added Pull Requests Review section to CONTRIBUTE.md Closes, thanks to [Povilas Balzaravičius](https://github.com/Pawka) for the PR!
-- Closes [#63](https://github.com/sendgrid/php-http-client/issues/63), PR [#79](https://github.com/sendgrid/php-http-client/pull/79): Refactor makeRequest method, thanks to [Michael Dennis](https://github.com/michaeljdennis) for the PR!
-- PR [#82](https://github.com/sendgrid/php-http-client/pull/82): Add JsonSerializable type to phpDoc of $body parameter in makeRequest method, thanks to [Jan Konáš](https://github.com/jankonas) for the PR!
-- PR [#85](https://github.com/sendgrid/php-http-client/pull/85): Updated the PHP Version details, thanks to [Siddhant Sharma](https://github.com/ssiddhantsharma) for the PR!
-- PR [#86](https://github.com/sendgrid/php-http-client/pull/86): Add phpdoc for send method, thanks to [Vitaliy Ryaboy](https://github.com/rvitaliy) for the PR!
-- PR [#84](https://github.com/sendgrid/php-http-client/pull/84): Update Docker instructions
-
-
-### Fixed
-- PR [#26](https://github.com/sendgrid/php-http-client/pull/26): README typo, thanks to [Cícero Pablo](https://github.com/ciceropablo) for the PR!
-- PR [#30](https://github.com/sendgrid/php-http-client/pull/30), Fixes [#18](https://github.com/sendgrid/php-http-client/issues/18): Disable CURLOPT_FAILONERROR, thanks to [Zsolt Prontvai](https://github.com/ProZsolt) for the PR!
-- PR [#44](https://github.com/sendgrid/php-http-client/pull/44): Fix Typo and add missing links to README, thanks to [Alex](https://github.com/pushkyn) for the PR!
-- PR [#52](https://github.com/sendgrid/php-http-client/pull/52): Fix syntax errors in README examples, thanks to [Michael Spiss](https://github.com/michaelspiss) for the PR!
-- Fixes [#56](https://github.com/sendgrid/php-http-client/pull/56), PR [#59](https://github.com/sendgrid/php-http-client/pull/59): Update LICENSE - fix year, thanks to [Alex](https://github.com/pushkyn) for the PR!
-- PR [#69](https://github.com/sendgrid/php-http-client/pull/69): Remove extra parenthesis from README, thanks to [Jessica Mauerhan](https://github.com/jmauerhan) for the PR!
-- PR [#71](https://github.com/sendgrid/php-http-client/pull/71): Fix typo in CONTRIBUTING.md, thanks to [thepriefy](https://github.com/thepriefy) for the PR!
-- Fixes [#81](https://github.com/sendgrid/php-http-client/issues/81), PR [#87](https://github.com/sendgrid/php-http-client/pull/87): Stop using insecure option by default 
-
-## [3.8.0] - 2017-09-13
-### Added
-- Pull request #23: [Automatically retry when rate limit is reached](https://github.com/sendgrid/php-http-client/pull/23)
-- Thanks to [Budi Chandra](https://github.com/budirec) for the pull request!
-
-## [3.7.0] - 2017-05-04
-### Added
-- Pull request #19: [Added ability to get headers as associative array](https://github.com/sendgrid/php-http-client/pull/19)
-- Solves issue #361: [https://github.com/sendgrid/sendgrid-php/issues/361](https://github.com/sendgrid/sendgrid-php/issues/361)
-- Thanks to [Alexander](https://github.com/mazanax) for the pull request!
-
-## [3.6.0] - 2017-03-01
-### Added
-- Pull request #16: [Pass the curlOptions to the client in buildClient](https://github.com/sendgrid/php-http-client/pull/16)
-- Thanks to [Baptiste Clavié](https://github.com/Taluu) for the pull request!
-
-## [3.5.1] - 2016-11-17
-### Fixed
-- Pull request #13, fixed issue #12: [Change from to php union operator to combine curl options](https://github.com/sendgrid/php-http-client/pull/13)
-- Thanks to [emil](https://github.com/emilva) for the pull request!
-
-## [3.5.0] - 2016-10-18
-### Added
-- Pull request #11: [Added curlOptions property to customize curl instance](https://github.com/sendgrid/php-http-client/pull/11)
-- Thanks to [Alain Tiemblo](https://github.com/ninsuo) for the pull request!
-
-## [3.4.0] - 2016-09-27
-### Added
-- Pull request #9: [Add getters for certain properties](https://github.com/sendgrid/php-http-client/pull/9)
-- Thanks to [Arjan Keeman](https://github.com/akeeman) for the pull request!
-
-## [3.3.0] - 2016-09-13
-### Added
-- Pull request #6: [Library refactoring around PSR-2 / PSR-4 code standards](https://github.com/sendgrid/php-http-client/pull/6)
-- Thanks to [Alexandr Ivanov](https://github.com/misantron) for the pull request!
-
-## [3.1.0] - 2016-06-10
-### Added
-- Automatically add Content-Type: application/json when there is a request body
-
-## [3.0.0] - 2016-06-06
-### Changed
-- Made the Request and Response variables non-redundant. e.g. request.requestBody becomes request.body
-
-## [2.0.2] - 2016-02-29
-### Fixed
-- Renaming files to conform to PSR-0, git ignored the case in 2.0.1
-
-## [2.0.1] - 2016-02-29
-### Fixed
-- Renaming files to conform to PSR-0
-
-## [1.0.1] - 2016-02-29
-### Fixed
-- Composer/Packagist install issues resolved
-
-## [1.0.0] - 2016-02-29
-### Added
-- We are live!
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/CODE_OF_CONDUCT.md b/libs/sendgrid/vendor/sendgrid/php-http-client/CODE_OF_CONDUCT.md
deleted file mode 100644
index 2f0727e..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/CODE_OF_CONDUCT.md
+++ /dev/null
@@ -1,73 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socio-economic status, nationality, personal
-appearance, race, religion, or sexual identity and orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-- Using welcoming and inclusive language
-- Being respectful of differing viewpoints and experiences
-- Gracefully accepting constructive criticism
-- Focusing on what is best for the community
-- Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-- The use of sexualized language or imagery and unwelcome sexual attention or
-  advances
-- Trolling, insulting/derogatory comments, and personal or political attacks
-- Public or private harassment
-- Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
-- Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at open-source@twilio.com. All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
-
-[homepage]: https://www.contributor-covenant.org
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/CONTRIBUTING.md b/libs/sendgrid/vendor/sendgrid/php-http-client/CONTRIBUTING.md
deleted file mode 100644
index a61d227..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/CONTRIBUTING.md
+++ /dev/null
@@ -1,199 +0,0 @@
-Hello! Thank you for choosing to help contribute to one of the SendGrid open source projects. There are many ways you can contribute and help is always welcome.  We merely ask that you follow the following contribution policies.
-
-- [CLAs and CCLAs](#cla)
-- [Roadmap & Milestones](#roadmap)
-- [Feature Request](#feature-request)
-- [Submit a Bug Report](#submit-a-bug-report)
-- [Improvements to the Codebase](#improvements-to-the-codebase)
-- [Understanding the Code Base](#understanding-the-codebase)
-- [Testing](#testing)
-- [Style Guidelines & Naming Conventions](#style-guidelines-and-naming-conventions)
-- [Creating a Pull Request](#creating-a-pull-request)
-- [Code Reviews](#code-reviews)
-
-<a name="roadmap"></a>
-We use [Milestones](https://github.com/sendgrid/php-http-client/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community review, comments, suggestions, and additional PRs are welcomed and encouraged.
-
-<a name="cla"></a>
-## CLAs and CCLAs
-
-Before you get started, SendGrid requires that a SendGrid Contributor License Agreement (CLA) be filled out by every contributor to a SendGrid open source project.
-
-Our goal with the CLA is to clarify the rights of our contributors and reduce other risks arising from inappropriate contributions.  The CLA also clarifies the rights SendGrid holds in each contribution and helps to avoid misunderstandings over what rights each contributor is required to grant to SendGrid when contributing.  In this way, the CLA encourages broad participation by our open source community and helps us build strong open source projects, free from any individual contributor withholding or revoking rights to any contribution.
-
-SendGrid does not merge a pull request made against a SendGrid open source project until that pull request is associated with a signed CLA. Copies of the CLA are available [here](https://gist.github.com/SendGridDX/98b42c0a5d500058357b80278fde3be8#file-sendgrid_cla).
-
-When you create a Pull Request, after a few seconds, a comment will appear with a link to the CLA. Click the link and fill out the brief form and then click the "I agree" button and you are all set. You will not be asked to re-sign the CLA unless we make a change.
-
-There are a few ways to contribute, which we'll enumerate below:
-
-<a name="feature-request"></a>
-## Feature Request
-
-If you'd like to make a feature request, please read this section.
-
-The GitHub issue tracker is the preferred channel for library feature requests, but please respect the following restrictions:
-
-- Please **search for existing issues** to ensure we don't have duplicate bugs/feature requests.
-- Please be respectful and considerate of others when commenting on issues
-
-<a name="submit-a-bug-report"></a>
-## Submit a Bug Report
-
-Note: DO NOT include your credentials in ANY code examples, descriptions, or media you make public.
-
-A software bug is a demonstrable issue in the code base. For us to diagnose the issue and respond as quickly as possible, please add as much detail as possible into your bug report.
-
-Before you decide to create a new issue, please try the following:
-
-1. Check the Github issues tab if the identified issue has already been reported, if so, please add a +1 to the existing post.
-2. Update to the latest version of this code and check if the issue has already been fixed
-3. Copy and fill in the Bug Report Template we have provided below
-
-### Please use our Bug Report Template
-
-To make the process easier, we've included a [sample bug report template](https://github.com/sendgrid/php-http-client/ISSUE_TEMPLATE.md) (borrowed from [Ghost](https://github.com/TryGhost/Ghost/)). The template uses [GitHub flavored markdown](https://help.github.com/articles/github-flavored-markdown/) for formatting.
-
-<a name="improvements-to-the-codebase"></a>
-## Improvements to the Codebase
-
-We welcome direct contributions to the php-http-client code base. Thank you!
-
-### Development Environment ###
-
-#### Install and Run Locally ####
-
-##### Prerequisites #####
-
-- PHP 5.6 or 7.0
-- [Composer](https://getcomposer.org/)
-
-##### Initial setup: #####
-
-```bash
-git clone https://github.com/sendgrid/php-http-client.git
-cd php-http-client
-```
-
-### Environment Variables
-
-First, get your free SendGrid account [here](https://sendgrid.com/free?source=php-http-client).
-
-Next, update your environment with your [SENDGRID_API_KEY](https://app.sendgrid.com/settings/api_keys).
-
-```bash
-echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
-echo "sendgrid.env" >> .gitignore
-source ./sendgrid.env
-```
-
-##### Execute: #####
-
-See the [examples folder](https://github.com/sendgrid/php-http-client/tree/master/examples).
-
-<a name="understanding-the-codebase"></a>
-## Understanding the Code Base
-
-**/examples**
-
-Working examples that demonstrate usage.
-
-**/test/unit**
-
-Unit tests.
-
-**/lib/SendGrid/Client.php**
-
-An HTTP client with a fluent interface using method chaining and reflection. By returning self on [__call](https://github.com/sendgrid/php-http-client/blob/master/lib/client.php#L212) and [_()](https://github.com/sendgrid/php-http-client/blob/master/lib/client.pph#L198), we can dynamically build the URL using method chaining and [__call](https://github.com/sendgrid/php-http-client/blob/master/lib/client.php#L212) allows us to dynamically receive the method calls to achieve reflection.
-
-This allows for the following mapping from a URL to a method chain:
-
-`/api_client/{api_key_id}/version` maps to `client->api_client().->_($api_key_id)->version-><method>()` where <method> is a [HTTP verb](https://github.com/sendgrid/php-http-client/blob/master/lib/client.php#L94).
-
-**/lib/SendGrid/Config.php**
-
-Loads the environment variables.
-
-<a name="testing"></a>
-## Testing
-
-All PRs require passing tests before the PR will be reviewed.
-
-All test files are in the [`/test/unit`](https://github.com/sendgrid/php-http-client/tree/master/test/unit) directory.
-
-For the purposes of contributing to this repo, please update the [`ClientTest.php`](https://github.com/sendgrid/php-http-client/blob/master/test/unit/ClientTest.php) file with unit tests as you modify the code.
-
-```bash
-composer install
-cd test/unit
-../../vendor/bin/phpunit . --bootstrap bootstrap.php --filter test*
-```
-
-<a name="style-guidelines-and-naming-conventions"></a>
-## Style Guidelines & Naming Conventions
-
-Generally, we follow the style guidelines as suggested by the official language. However, we ask that you conform to the styles that already exist in the library. If you wish to deviate, please explain your reasoning.
-
-- [pear coding standards](https://pear.php.net/manual/en/standards.php)
-
-Please run your code through:
-
-- [PHP Code Sniffer](https://github.com/squizlabs/PHP_CodeSniffer)
-
-<a name="creating-a-pull-request"></a>
-## Creating a Pull Request
-
-1. [Fork](https://help.github.com/fork-a-repo/) the project, clone your fork,
-   and configure the remotes:
-
-   ```bash
-   # Clone your fork of the repo into the current directory
-   git clone https://github.com/sendgrid/php-http-client
-   # Navigate to the newly cloned directory
-   cd php-http-client
-   # Assign the original repo to a remote called "upstream"
-   git remote add upstream https://github.com/sendgrid/php-http-client
-   ```
-
-2. If you cloned a while ago, get the latest changes from upstream:
-
-   ```bash
-   git checkout <dev-branch>
-   git pull upstream <dev-branch>
-   ```
-
-3. Create a new topic branch (off the main project development branch) to
-   contain your feature, change, or fix:
-
-   ```bash
-   git checkout -b <topic-branch-name>
-   ```
-
-4. Commit your changes in logical chunks. Please adhere to these [git commit
-   message guidelines](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html)
-   or your code is unlikely be merged into the main project. Use Git's
-   [interactive rebase](https://help.github.com/articles/interactive-rebase)
-   feature to tidy up your commits before making them public.
-
-4a. Create tests.
-
-4b. Create or update the example code that demonstrates the functionality of this change to the code.
-
-5. Locally merge (or rebase) the upstream development branch into your topic branch:
-
-   ```bash
-   git pull [--rebase] upstream master
-   ```
-
-6. Push your topic branch up to your fork:
-
-   ```bash
-   git push origin <topic-branch-name>
-   ```
-
-7. [Open a Pull Request](https://help.github.com/articles/using-pull-requests/)
-    with a clear title and description against the `master` branch. All tests must be passing before we will review the PR.
-
-<a name="code-reviews"></a>
-## Code Reviews
-If you can, please look at open PRs and review them. Give feedback and help us merge these PRs much faster! If you don't know how, Github has some great [information on how to review a Pull Request](https://help.github.com/articles/about-pull-request-reviews/).
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/Dockerfile b/libs/sendgrid/vendor/sendgrid/php-http-client/Dockerfile
deleted file mode 100644
index da1ef10..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/Dockerfile
+++ /dev/null
@@ -1,13 +0,0 @@
-FROM php:7.1-apache
-
-ARG sendgrid_apikey
-ENV SENDGRID_API_KEY=$sendgrid_apikey
-
-COPY . /var/www/client
-WORKDIR /var/www/client
-
-RUN apt-get update && \
-    apt-get install -y git zip zlib1g-dev && docker-php-ext-install zip
-RUN curl --silent --show-error https://getcomposer.org/installer | php
-
-RUN php composer.phar install
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/ISSUE_TEMPLATE.md b/libs/sendgrid/vendor/sendgrid/php-http-client/ISSUE_TEMPLATE.md
deleted file mode 100644
index 8c3b92a..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/ISSUE_TEMPLATE.md
+++ /dev/null
@@ -1,26 +0,0 @@
-<!--
-If this is a feature request, make sure you search Issues for an existing request before creating a new one!
--->
-
-### Issue Summary
-A summary of the issue and the environment in which it occurs. If suitable, include the steps required to reproduce the bug. Please feel free to include screenshots, screencasts, or code examples.
-
-### Steps to Reproduce
-1. This is the first step
-2. This is the second step
-3. Further steps, etc.
-
-### Code Snippet
-```php
-# paste code here
-```
-
-### Exception/Log
-```
-# paste exception/log here
-```
-
-### Technical details:
-* php-http-client version:
-* php version:
-
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/LICENSE.md b/libs/sendgrid/vendor/sendgrid/php-http-client/LICENSE.md
deleted file mode 100644
index 29aba59..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/LICENSE.md
+++ /dev/null
@@ -1,21 +0,0 @@
-MIT License
-
-Copyright (C) 2020, Twilio SendGrid, Inc. <help@twilio.com>
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do
-so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/Makefile b/libs/sendgrid/vendor/sendgrid/php-http-client/Makefile
deleted file mode 100644
index 260a6d0..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-.PHONY: clean install test
-
-clean:
-	@rm -rf vendor composer.lock
-
-install: clean
-	composer install
-
-test: install
-	vendor/bin/phpunit test/unit
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/PULL_REQUEST_TEMPLATE.md b/libs/sendgrid/vendor/sendgrid/php-http-client/PULL_REQUEST_TEMPLATE.md
deleted file mode 100644
index 215059a..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/PULL_REQUEST_TEMPLATE.md
+++ /dev/null
@@ -1,31 +0,0 @@
-<!--
-We appreciate the effort for this pull request but before that please make sure you read the contribution guidelines, then fill out the blanks below.
-
-Please format the PR title appropriately based on the type of change:
-  <type>[!]: <description>
-Where <type> is one of: docs, chore, feat, fix, test.
-Add a '!' after the type for breaking changes (e.g. feat!: new breaking feature).
-
-**All third-party contributors acknowledge that any contributions they provide will be made under the same open-source license that the open-source project is provided under.**
-
-Please enter each Issue number you are resolving in your PR after one of the following words [Fixes, Closes, Resolves]. This will auto-link these issues and close them when this PR is merged!
-e.g.
-Fixes #1
-Closes #2
--->
-
-# Fixes #
-
-A short description of what this PR does.
-
-### Checklist
-- [ ] I acknowledge that all my contributions will be made under the project's license
-- [ ] I have made a material change to the repo (functionality, testing, spelling, grammar)
-- [ ] I have read the [Contribution Guidelines](CONTRIBUTING.md) and my PR follows them
-- [ ] I have titled the PR appropriately
-- [ ] I have updated my branch with the master branch
-- [ ] I have added tests that prove my fix is effective or that my feature works
-- [ ] I have added necessary documentation about the functionality in the appropriate .md file
-- [ ] I have added inline documentation to the code I modified
-
-If you have questions, please file a [support ticket](https://twilio.com/help/contact), or create a GitHub Issue in this repository.
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/README.md b/libs/sendgrid/vendor/sendgrid/php-http-client/README.md
deleted file mode 100644
index 304012f..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/README.md
+++ /dev/null
@@ -1,200 +0,0 @@
-![SendGrid Logo](https://uiux.s3.amazonaws.com/2016-logos/email-logo%402x.png)
-
-[![Travis Badge](https://travis-ci.org/sendgrid/php-http-client.svg?branch=master)](https://travis-ci.org/sendgrid/php-http-client)
-[![Latest Version on Packagist](https://img.shields.io/packagist/v/sendgrid/php-http-client.svg?style=flat-square)](https://packagist.org/packages/sendgrid/php-http-client)
-[![Email Notifications Badge](https://dx.sendgrid.com/badge/php)](https://dx.sendgrid.com/newsletter/php)
-[![Twitter Follow](https://img.shields.io/twitter/follow/sendgrid.svg?style=social&label=Follow)](https://twitter.com/sendgrid)
-[![GitHub contributors](https://img.shields.io/github/contributors/sendgrid/php-http-client.svg)](https://github.com/sendgrid/php-http-client/graphs/contributors)
-[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.md)
-
-**Quickly and easily access any RESTful or RESTful-like API.**
-
-If you are looking for the SendGrid API client library, please see [this repo](https://github.com/sendgrid/sendgrid-php).
-
-# Announcements
-
-All updates to this library are documented in our [CHANGELOG](https://github.com/sendgrid/php-http-client/blob/master/CHANGELOG.md).
-
-# Table of Contents
-- [Installation](#installation)
-- [Quick Start](#quick-start)
-- [Usage](#usage)
-- [Roadmap](#roadmap)
-- [How to Contribute](#contribute)
-- [Thanks](#thanks)
-- [About](#about)
-- [License](#license)
-
-<a name="installation"></a>
-# Installation
-
-## Prerequisites
-
-- PHP version 5.6, 7.0, 7.1, 7.2, 7.3, or 7.4
-
-## Install with Composer
-
-Add php-http-client to your `composer.json` file. If you are not using [Composer](http://getcomposer.org), you should be. It's an excellent way to manage dependencies in your PHP application.
-
-```json
-{
-  "require": {
-    "sendgrid/php-http-client": "^3.10.6"
-  }
-}
-```
-
-Then at the top of your PHP script require the autoloader:
-
-```php
-require __DIR__ . '/vendor/autoload.php';
-```
-
-Then from the command line:
-
-```bash
-composer install
-```
-
-## Install without Composer
-
-You should create a `lib` directory in the directory of your application and clone to `lib` repositories [php-http-client](https://github.com/sendgrid/php-http-client.git) and [sendgrid-php](https://github.com/sendgrid/sendgrid-php.git):
-
-```
-$ cd /path/to/your/app
-$ mkdir lib
-$ cd lib
-$ git clone https://github.com/sendgrid/php-http-client.git
-```
-
-In the next step you should create `loader.php`:
-
-```
-$ cd /path/to/your/app
-$ touch loader.php
-```
-
-And add the code below to the `loader.php`:
-
-```php
-<?php
-
-require_once __DIR__ . '/lib/php-http-client/lib/Client.php';
-require_once __DIR__ . '/lib/php-http-client/lib/Response.php';
-```
-
-After it you can use the `php-http-client` library in your project:
-
-```php
-<?php
-
-include __DIR__ . '/loader.php';
-
-$client = new SendGrid\Client();
-```
-
-<a name="quick-start"></a>
-# Quick Start
-
-Here is a quick example:
-
-`GET /your/api/{param}/call`
-
-```php
-// include __DIR__ . '/loader.php';
-require 'vendor/autoload.php';
-$apiKey = YOUR_SENDGRID_API_KEY;
-$authHeaders = [
-    'Authorization: Bearer ' . $apiKey
-];
-$client = new SendGrid\Client('https://api.sendgrid.com', $authHeaders);
-$param = 'foo';
-$response = $client->your()->api()->_($param)->call()->get();
-
-var_dump(
-    $response->statusCode(),
-    $response->headers(),
-    $response->body()
-);
-```
-
-`POST /your/api/{param}/call` with headers, query parameters and a request body with versioning.
-
-```php
-// include __DIR__ . '/loader.php';
-require 'vendor/autoload.php';
-$apiKey = YOUR_SENDGRID_API_KEY;
-$authHeaders = [
-    'Authorization: Bearer ' . $apiKey
-];
-$client = new SendGrid\Client('https://api.sendgrid.com', $authHeaders);
-$queryParams = [
-    'hello' => 0, 'world' => 1
-];
-$requestHeaders = [
-    'X-Test' => 'test'
-];
-$data = [
-    'some' => 1, 'awesome' => 2, 'data' => 3
-];
-$param = 'bar';
-$response = $client->your()->api()->_($param)->call()->post($data, $queryParams, $requestHeaders);
-
-var_dump(
-    $response->statusCode(),
-    $response->headers(),
-    $response->body()
-);
-```
-
-If there is an issues with the request, such as misconfigured CURL SSL options, an `InvalidRequest` will be thrown
-with message from CURL on why the request failed. Use the message as a hit to troubleshooting steps of your environment.
-
-<a name="usage"></a>
-# Usage
-
-- [Usage Examples](USAGE.md)
-
-## Environment Variables
-
-You can do the following to create a .env file:
-
-```cp .env_example .env```
-
-Then, just add your API Key into your .env file.
-
-<a name="roadmap"></a>
-# Roadmap
-
-If you are interested in the future direction of this project, please take a look at our [milestones](https://github.com/sendgrid/php-http-client/milestones). We would love to hear your feedback.
-
-<a name="contribute"></a>
-# How to Contribute
-
-We encourage contribution to our libraries, please see our [CONTRIBUTING](https://github.com/sendgrid/php-http-client/blob/master/CONTRIBUTING.md) guide for details.
-
-Quick links:
-
-- [Feature Request](https://github.com/sendgrid/php-http-client/blob/master/CONTRIBUTING.md#feature-request)
-- [Bug Reports](https://github.com/sendgrid/php-http-client/blob/master/CONTRIBUTING.md#submit-a-bug-report)
-- [Sign the CLA to Create a Pull Request](https://github.com/sendgrid/php-http-client/blob/master/CONTRIBUTING.md#cla)
-- [Improvements to the Codebase](https://github.com/sendgrid/php-http-client/blob/master/CONTRIBUTING.md#improvements-to-the-codebase)
-- [Review Pull Requests](https://github.com/sendgrid/php-http-client/blob/master/CONTRIBUTING.md#code-reviews)
-
-<a name="thanks"></a>
-# Thanks
-
-We were inspired by the work done on [birdy](https://github.com/inueni/birdy) and [universalclient](https://github.com/dgreisen/universalclient).
-
-<a name="about"></a>
-# About
-
-php-http-client is maintained and funded by Twilio SendGrid, Inc. The names and logos for php-http-client are trademarks of Twilio SendGrid, Inc.
-
-If you need help installing or using the library, please check the [Twilio SendGrid Support Help Center](https://support.sendgrid.com).
-
-If you've instead found a bug in the library or would like new features added, go ahead and open issues or pull requests against this repo!
-
-<a name="license"></a>
-# License
-[The MIT License (MIT)](LICENSE.md)
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/TROUBLESHOOTING.md b/libs/sendgrid/vendor/sendgrid/php-http-client/TROUBLESHOOTING.md
deleted file mode 100644
index acc43e6..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/TROUBLESHOOTING.md
+++ /dev/null
@@ -1,16 +0,0 @@
-If you can't find a solution below, please open an [issue](https://github.com/sendgrid/php-http-client/issues).
-
-## Table of Contents
-
-* [Viewing the Request Body](#request-body)
-
-<a name="request-body"></a>
-## Viewing the Request Body
-
-When debugging or testing, it may be useful to examine the raw request body. In the `examples/example.php` file, after your API call, use this code to echo out the status code, body, and headers:
-
-```php
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-```
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/USAGE.md b/libs/sendgrid/vendor/sendgrid/php-http-client/USAGE.md
deleted file mode 100644
index abf346a..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/USAGE.md
+++ /dev/null
@@ -1,109 +0,0 @@
-# Usage
-
-Usage examples for SendGrid php-http-client
-
-## Initialization
-
-```
-// If running this outside of this context, use the following include and
-// comment out the two includes below
-// require __DIR__ . '/vendor/autoload.php';
-include(dirname(__DIR__) . '/lib/Client.php');
-// This gets the parent directory, for your current directory use getcwd()
-$path_to_config = dirname(__DIR__);
-$apiKey = getenv('SENDGRID_API_KEY');
-$headers = ['Authorization: Bearer ' . $apiKey];
-$client = new SendGrid\Client('https://api.sendgrid.com', $headers, '/v3');
-```
-
-## Table of Contents
-
-- [GET](#get)
-- [DELETE](#delete)
-- [POST](#post)
-- [PUT](#put)
-- [PATCH](#patch)
-
-<a name="get"></a>
-## GET
-
-#### GET Collection
-
-```
-$query_params = ['limit' => 100, 'offset' => 0];
-$request_headers = ['X-Mock: 200'];
-$response = $client->api_keys()->get(null, $query_params, $request_headers);
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-```
-
-#### GET with auto retry on rate limit
-
-```
-$query_params = ['limit' => 100, 'offset' => 0];
-$request_headers = ['X-Mock: 200'];
-$retryOnLimit = true;
-$response = $client->api_keys()->get(null, $query_params, $request_headers, $retryOnLimit);
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-```
-
-<a name="delete"></a>
-## DELETE
-
-```
-$response = $client->api_keys()->_($api_key_id)->delete();
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-```
-
-<a name="post"></a>
-## POST
-
-```
-$request_body = [
-    'name' => 'My PHP API Key',
-    'scopes' => [
-        'mail.send',
-        'alerts.create',
-        'alerts.read'
-    ]
-];
-$response = $client->api_keys()->post($request_body);
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-$response_body = json_decode($response->body());
-$api_key_id = $response_body->api_key_id;
-```
-<a name="put"></a>
-## PUT
-
-```
-$request_body = [
-    'name' => 'A New Hope',
-    'scopes' => [
-        'user.profile.read',
-        'user.profile.update'
-    ]
-];
-$response = $client->api_keys()->_($api_key_id)->put($request_body);
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-```
-<a name="patch"></a>
-## PATCH
-
-```
-$request_body = [
-    'name' => 'A New Hope'
-];
-$response = $client->api_keys()->_($api_key_id)->patch($request_body);
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-```
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/examples/.env_sample b/libs/sendgrid/vendor/sendgrid/php-http-client/examples/.env_sample
deleted file mode 100644
index 30857f4..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/examples/.env_sample
+++ /dev/null
@@ -1 +0,0 @@
-export SENDGRID_API_KEY=''
\ No newline at end of file
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/examples/example.php b/libs/sendgrid/vendor/sendgrid/php-http-client/examples/example.php
deleted file mode 100644
index 107d95a..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/examples/example.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-
-// If running this outside of this context, use the following include and
-// comment out the two includes below
-// require __DIR__ . '/vendor/autoload.php';
-include(dirname(__DIR__) . '/lib/Client.php');
-include(dirname(__DIR__) . '/lib/Response.php');
-// This gets the parent directory, for your current directory use getcwd()
-$path_to_config = dirname(__DIR__);
-$apiKey = getenv('SENDGRID_API_KEY');
-$headers = ['Authorization: Bearer ' . $apiKey];
-$client = new SendGrid\Client('https://api.sendgrid.com', $headers, '/v3');
-
-// GET /v3/api_keys - retrieve all API Keys that belong to the user
-$queryParams = ['limit' => 100, 'offset' => 0];
-$requestHeaders = ['X-Mock: 200'];
-$response = $client->api_keys()->get(null, $queryParams, $requestHeaders);
-echo $response->statusCode();
-echo $response->body();
-echo $response->headers();
-
-// GET /v3/api_keys - retrieve all API Keys that belong to the user
-$queryParams = ['limit' => 100, 'offset' => 0];
-$requestHeaders = ['X-Mock: 200'];
-$retryOnLimit = true; // with auto retry on rate limit
-$response = $client->api_keys()->get(null, $queryParams, $requestHeaders, $retryOnLimit);
-
-// POST /v3/api_keys - create a new user API Key
-$requestBody = [
-    'name' => 'My PHP API Key',
-    'scopes' => [
-        'mail.send',
-        'alerts.create',
-        'alerts.read'
-    ]
-];
-$response = $client->api_keys()->post($requestBody);
-$responseBody = json_decode($response->body(), true);
-$apiKeyId = $responseBody['api_key_id'];
-
-// GET /v3/api_keys/{api_key_id} - retrieve a single API Key
-$response = $client->api_keys()->_($apiKeyId)->get();
-
-// PATCH /v3/api_keys/{api_key_id} - update the name of an existing API Key
-$requestBody = [
-    'name' => 'A New Hope'
-];
-$response = $client->api_keys()->_($apiKeyId)->patch($requestBody);
-
-// PUT /v3/api_keys/{api_key_id} - update the name and scopes of a given API Key
-$requestBody = [
-    'name' => 'A New Hope',
-    'scopes' => [
-        'user.profile.read',
-        'user.profile.update'
-    ]
-];
-$response = $client->api_keys()->_($apiKeyId)->put($requestBody);
-
-// DELETE /v3/api_keys/{api_key_id} - revoke an existing API Key
-$response = $client->api_keys()->_($apiKeyId)->delete();
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Client.php b/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Client.php
deleted file mode 100644
index 4b34b5b..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Client.php
+++ /dev/null
@@ -1,599 +0,0 @@
-<?php
-
-/**
- * HTTP Client library
- */
-
-namespace SendGrid;
-
-use SendGrid\Exception\InvalidRequest;
-
-/**
- *
- * Class Client
- * @package SendGrid
- * @version 3.9.5
- *
- * Quickly and easily access any REST or REST-like API.
- *
- * @method Response get($body = null, $query = null, $headers = null)
- * @method Response post($body = null, $query = null, $headers = null)
- * @method Response patch($body = null, $query = null, $headers = null)
- * @method Response put($body = null, $query = null, $headers = null)
- * @method Response delete($body = null, $query = null, $headers = null)
- *
- * @method Client version($value)
- * @method Client|Response send()
- *
- * Adding all the endpoints as a method so code completion works
- *
- * General
- * @method Client stats()
- * @method Client search()
- * @method Client monthly()
- * @method Client sums()
- * @method Client monitor()
- * @method Client test()
- *
- * Access settings
- * @method Client access_settings()
- * @method Client activity()
- * @method Client whitelist()
- *
- * Alerts
- * @method Client alerts()
- *
- * Api keys
- * @method Client api_keys()
- *
- * ASM
- * @method Client asm()
- * @method Client groups()
- * @method Client suppressions()
- *
- * Browsers
- * @method Client browsers()
- *
- * Campaigns
- * @method Client campaigns()
- * @method Client schedules()
- * @method Client now()
- *
- * Categories
- * @method Client categories()
- *
- * Clients
- * @method Client clients()
- *
- * Marketing
- * @method Client marketing()
- * @method Client contacts()
- * @method Client count()
- * @method Client exports()
- * @method Client imports()
- * @method Client lists()
- * @method Client field_definitions()
- * @method Client segments()
- * @method Client singlesends()
- *
- *
- * Devices
- * @method Client devices()
- *
- * Geo
- * @method Client geo()
- *
- * Ips
- * @method Client ips()
- * @method Client assigned()
- * @method Client pools()
- * @method Client warmup()
- *
- * Mail
- * @method Client mail()
- * @method Client batch()
- *
- * Mailbox Providers
- * @method Client mailbox_providers()
- *
- * Mail settings
- * @method Client mail_settings()
- * @method Client address_whitelist()
- * @method Client bcc()
- * @method Client bounce_purge()
- * @method Client footer()
- * @method Client forward_bounce()
- * @method Client forward_spam()
- * @method Client plain_content()
- * @method Client spam_check()
- * @method Client template()
- *
- * Partner settings
- * @method Client partner_settings()
- * @method Client new_relic()
- *
- * Scopes
- * @method Client scopes()
- *
- * Senders
- * @method Client senders()
- * @method Client resend_verification()
- *
- * Sub Users
- * @method Client subusers()
- * @method Client reputations()
- *
- * Supressions
- * @method Client suppression()
- * @method Client global()
- * @method Client blocks()
- * @method Client bounces()
- * @method Client invalid_emails()
- * @method Client spam_reports()
- * @method Client unsubcribes()
- *
- * Templates
- * @method Client templates()
- * @method Client versions()
- * @method Client activate()
- *
- * Tracking settings
- * @method Client tracking_settings()
- * @method Client click()
- * @method Client google_analytics()
- * @method Client open()
- * @method Client subscription()
- *
- * User
- * @method Client user()
- * @method Client account()
- * @method Client credits()
- * @method Client email()
- * @method Client password()
- * @method Client profile()
- * @method Client scheduled_sends()
- * @method Client enforced_tls()
- * @method Client settings()
- * @method Client username()
- * @method Client webhooks()
- * @method Client event()
- * @method Client parse()
- *
- * Missed any? Simply add them by doing: @method Client method()
- */
-class Client
-{
-    const TOO_MANY_REQUESTS_HTTP_CODE = 429;
-
-    /**
-     * @var string
-     */
-    protected $host;
-
-    /**
-     * @var array
-     */
-    protected $headers;
-
-    /**
-     * @var string
-     */
-    protected $version;
-
-    /**
-     * @var array
-     */
-    protected $path;
-
-    /**
-     * @var array
-     */
-    protected $curlOptions;
-
-    /**
-     * @var bool
-     */
-    protected $isConcurrentRequest;
-
-    /**
-     * @var array
-     */
-    protected $savedRequests;
-
-    /**
-     * @var bool
-     */
-    protected $retryOnLimit;
-
-    /**
-     * These are the supported HTTP verbs
-     *
-     * @var array
-     */
-    private $methods = ['get', 'post', 'patch', 'put', 'delete'];
-
-    /**
-      * Initialize the client
-      *
-      * @param string  $host          the base url (e.g. https://api.sendgrid.com)
-      * @param array   $headers       global request headers
-      * @param string  $version       api version (configurable) - this is specific to the SendGrid API
-      * @param array   $path          holds the segments of the url path
-      * @param array   $curlOptions   extra options to set during curl initialization
-      * @param bool    $retryOnLimit  set default retry on limit flag
-      */
-    public function __construct($host, $headers = null, $version = null, $path = null, $curlOptions = null, $retryOnLimit = false)
-    {
-        $this->host = $host;
-        $this->headers = $headers ?: [];
-        $this->version = $version;
-        $this->path = $path ?: [];
-        $this->curlOptions = $curlOptions ?: [];
-        $this->retryOnLimit = $retryOnLimit;
-        $this->isConcurrentRequest = false;
-        $this->savedRequests = [];
-    }
-
-    /**
-     * @return string
-     */
-    public function getHost()
-    {
-        return $this->host;
-    }
-
-    /**
-     * @return array
-     */
-    public function getHeaders()
-    {
-        return $this->headers;
-    }
-
-    /**
-     * @return string|null
-     */
-    public function getVersion()
-    {
-        return $this->version;
-    }
-
-    /**
-     * @return array
-     */
-    public function getPath()
-    {
-        return $this->path;
-    }
-
-    /**
-     * @return array
-     */
-    public function getCurlOptions()
-    {
-        return $this->curlOptions;
-    }
-
-    /**
-     * Set extra options to set during curl initialization
-     *
-     * @param array $options
-     *
-     * @return Client
-     */
-    public function setCurlOptions(array $options)
-    {
-        $this->curlOptions = $options;
-
-        return $this;
-    }
-
-    /**
-     * Set default retry on limit flag
-     *
-     * @param bool $retry
-     *
-     * @return Client
-     */
-    public function setRetryOnLimit($retry)
-    {
-        $this->retryOnLimit = $retry;
-
-        return $this;
-    }
-
-    /**
-     * Set concurrent request flag
-     *
-     * @param bool $isConcurrent
-     *
-     * @return Client
-     */
-    public function setIsConcurrentRequest($isConcurrent)
-    {
-        $this->isConcurrentRequest = $isConcurrent;
-
-        return $this;
-    }
-
-    /**
-     * Build the final URL to be passed
-     *
-     * @param array $queryParams an array of all the query parameters
-     *
-     * @return string
-     */
-    private function buildUrl($queryParams = null)
-    {
-        $path = '/' . implode('/', $this->path);
-        if (isset($queryParams)) {
-            $path .= '?' . http_build_query($queryParams);
-        }
-        return sprintf('%s%s%s', $this->host, $this->version ?: '', $path);
-    }
-
-    /**
-     * Creates curl options for a request
-     * this function does not mutate any private variables
-     *
-     * @param string $method
-     * @param array $body
-     * @param array $headers
-     *
-     * @return array
-     */
-    private function createCurlOptions($method, $body = null, $headers = null)
-    {
-        $options = [
-                CURLOPT_RETURNTRANSFER => true,
-                CURLOPT_HEADER => true,
-                CURLOPT_CUSTOMREQUEST => strtoupper($method),
-                CURLOPT_SSL_VERIFYPEER => true,
-                CURLOPT_FAILONERROR => false
-            ] + $this->curlOptions;
-
-        if (isset($headers)) {
-            $headers = array_merge($this->headers, $headers);
-        } else {
-            $headers = $this->headers;
-        }
-
-        if (isset($body)) {
-            $encodedBody = json_encode($body);
-            $options[CURLOPT_POSTFIELDS] = $encodedBody;
-            $headers = array_merge($headers, ['Content-Type: application/json']);
-        }
-        $options[CURLOPT_HTTPHEADER] = $headers;
-
-        return $options;
-    }
-
-    /**
-     * @param array $requestData
-     *      e.g. ['method' => 'POST', 'url' => 'www.example.com', 'body' => 'test body', 'headers' => []]
-     * @param bool $retryOnLimit
-     *
-     * @return array
-     */
-    private function createSavedRequest(array $requestData, $retryOnLimit = false)
-    {
-        return array_merge($requestData, ['retryOnLimit' => $retryOnLimit]);
-    }
-
-    /**
-     * @param array $requests
-     *
-     * @return array
-     */
-    private function createCurlMultiHandle(array $requests)
-    {
-        $channels = [];
-        $multiHandle = curl_multi_init();
-
-        foreach ($requests as $id => $data) {
-            $channels[$id] = curl_init($data['url']);
-            $curlOpts = $this->createCurlOptions($data['method'], $data['body'], $data['headers']);
-            curl_setopt_array($channels[$id], $curlOpts);
-            curl_multi_add_handle($multiHandle, $channels[$id]);
-        }
-
-        return [$channels, $multiHandle];
-    }
-
-    /**
-     * Prepare response object
-     *
-     * @param resource $channel  the curl resource
-     * @param string   $content
-     *
-     * @return Response object
-     */
-    private function parseResponse($channel, $content)
-    {
-        $headerSize = curl_getinfo($channel, CURLINFO_HEADER_SIZE);
-        $statusCode = curl_getinfo($channel, CURLINFO_HTTP_CODE);
-
-        $responseBody = substr($content, $headerSize);
-
-        $responseHeaders = substr($content, 0, $headerSize);
-        $responseHeaders = explode("\n", $responseHeaders);
-        $responseHeaders = array_map('trim', $responseHeaders);
-
-        return new Response($statusCode, $responseBody, $responseHeaders);
-    }
-
-    /**
-     * Retry request
-     *
-     * @param array  $responseHeaders headers from rate limited response
-     * @param string $method          the HTTP verb
-     * @param string $url             the final url to call
-     * @param array  $body            request body
-     * @param array  $headers         original headers
-     *
-     * @return Response response object
-     */
-    private function retryRequest(array $responseHeaders, $method, $url, $body, $headers)
-    {
-        $sleepDurations = $responseHeaders['X-Ratelimit-Reset'] - time();
-        sleep($sleepDurations > 0 ? $sleepDurations : 0);
-        return $this->makeRequest($method, $url, $body, $headers, false);
-    }
-
-    /**
-     * Make the API call and return the response.
-     * This is separated into it's own function, so we can mock it easily for testing.
-     *
-     * @param string $method       the HTTP verb
-     * @param string $url          the final url to call
-     * @param array  $body         request body
-     * @param array  $headers      any additional request headers
-     * @param bool   $retryOnLimit should retry if rate limit is reach?
-     *
-     * @return Response object
-     * @throws InvalidRequest
-     */
-    public function makeRequest($method, $url, $body = null, $headers = null, $retryOnLimit = false)
-    {
-        $channel = curl_init($url);
-
-        $options = $this->createCurlOptions($method, $body, $headers);
-
-        curl_setopt_array($channel, $options);
-        $content = curl_exec($channel);
-
-        if ($content === false) {
-            throw new InvalidRequest(curl_error($channel), curl_errno($channel));
-        }
-
-        $response = $this->parseResponse($channel, $content);
-
-        if ($response->statusCode() === self::TOO_MANY_REQUESTS_HTTP_CODE && $retryOnLimit) {
-            $responseHeaders = $response->headers(true);
-            return $this->retryRequest($responseHeaders, $method, $url, $body, $headers);
-        }
-
-        curl_close($channel);
-
-        return $response;
-    }
-
-    /**
-     * Send all saved requests at once
-     *
-     * @param array $requests
-     *
-     * @return Response[]
-     */
-    public function makeAllRequests(array $requests = [])
-    {
-        if (empty($requests)) {
-            $requests = $this->savedRequests;
-        }
-        list($channels, $multiHandle) = $this->createCurlMultiHandle($requests);
-
-        // running all requests
-        $isRunning = null;
-        do {
-            curl_multi_exec($multiHandle, $isRunning);
-        } while ($isRunning);
-
-        // get response and close all handles
-        $retryRequests = [];
-        $responses = [];
-        $sleepDurations = 0;
-        foreach ($channels as $id => $channel) {
-
-            $content = curl_multi_getcontent($channel);
-            $response = $this->parseResponse($channel, $content);
-
-            if ($response->statusCode() === self::TOO_MANY_REQUESTS_HTTP_CODE && $requests[$id]['retryOnLimit']) {
-                $headers = $response->headers(true);
-                $sleepDurations = max($sleepDurations, $headers['X-Ratelimit-Reset'] - time());
-                $requestData = [
-                    'method' => $requests[$id]['method'],
-                    'url' => $requests[$id]['url'],
-                    'body' => $requests[$id]['body'],
-                    'headers' => $headers,
-                ];
-                $retryRequests[] = $this->createSavedRequest($requestData, false);
-            } else {
-                $responses[] = $response;
-            }
-
-            curl_multi_remove_handle($multiHandle, $channel);
-        }
-        curl_multi_close($multiHandle);
-
-        // retry requests
-        if (!empty($retryRequests)) {
-            sleep($sleepDurations > 0 ? $sleepDurations : 0);
-            $responses = array_merge($responses, $this->makeAllRequests($retryRequests));
-        }
-        return $responses;
-    }
-
-    /**
-     * Add variable values to the url. (e.g. /your/api/{variable_value}/call)
-     * Another example: if you have a PHP reserved word, such as and, in your url, you must use this method.
-     *
-     * @param string $name name of the url segment
-     *
-     * @return Client object
-     */
-    public function _($name = null)
-    {
-        if (isset($name)) {
-            $this->path[] = $name;
-        }
-        $client = new static($this->host, $this->headers, $this->version, $this->path);
-        $client->setCurlOptions($this->curlOptions);
-        $client->setRetryOnLimit($this->retryOnLimit);
-        $this->path = [];
-
-        return $client;
-    }
-
-    /**
-     * Dynamically add method calls to the url, then call a method.
-     * (e.g. client.name.name.method())
-     *
-     * @param string $name name of the dynamic method call or HTTP verb
-     * @param array  $args parameters passed with the method call
-     *
-     * @return Client|Response|Response[]|null object
-     */
-    public function __call($name, $args)
-    {
-        $name = strtolower($name);
-
-        if ($name === 'version') {
-            $this->version = $args[0];
-            return $this->_();
-        }
-
-        // send all saved requests
-        if (($name === 'send') && $this->isConcurrentRequest) {
-            return $this->makeAllRequests();
-        }
-
-        if (in_array($name, $this->methods, true)) {
-            $body = isset($args[0]) ? $args[0] : null;
-            $queryParams = isset($args[1]) ? $args[1] : null;
-            $url = $this->buildUrl($queryParams);
-            $headers = isset($args[2]) ? $args[2] : null;
-            $retryOnLimit = isset($args[3]) ? $args[3] : $this->retryOnLimit;
-
-            if ($this->isConcurrentRequest) {
-                // save request to be sent later
-                $requestData = ['method' => $name, 'url' => $url, 'body' => $body, 'headers' => $headers];
-                $this->savedRequests[] = $this->createSavedRequest($requestData, $retryOnLimit);
-                return null;
-            }
-
-            return $this->makeRequest($name, $url, $body, $headers, $retryOnLimit);
-        }
-
-        return $this->_($name);
-    }
-}
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Exception/InvalidRequest.php b/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Exception/InvalidRequest.php
deleted file mode 100644
index 542c114..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Exception/InvalidRequest.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-/**
- * HTTP Client library
- */
-namespace SendGrid\Exception;
-
-use Throwable;
-
-/**
- * Class InvalidHttpRequest
- *
- * Thrown when invalid payload was constructed, which could not reach SendGrid server.
- *
- * @package SendGrid\Exceptions
- */
-class InvalidRequest extends \Exception
-{
-    public function __construct(
-        $message = "",
-        $code = 0,
-        Throwable $previous = null
-    ) {
-        $message = 'Could not send request to server. '.
-            'CURL error '.$code.': '.$message;
-        parent::__construct($message, $code, $previous);
-    }
-
-}
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Response.php b/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Response.php
deleted file mode 100644
index 9ee80da..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/lib/Response.php
+++ /dev/null
@@ -1,106 +0,0 @@
-<?php
-
-/**
- * HTTP Client library
- */
-
-namespace SendGrid;
-
-/**
- * Holds the response from an API call.
- */
-class Response
-{
-    /**
-     * @var int
-     */
-    protected $statusCode;
-
-    /**
-     * @var string
-     */
-    protected $body;
-
-    /**
-     * @var array
-     */
-    protected $headers;
-
-    /**
-     * Setup the response data
-     *
-     * @param int    $statusCode the status code.
-     * @param string $body       the response body.
-     * @param array  $headers    an array of response headers.
-     */
-    public function __construct($statusCode = 200, $body = '', array $headers = [])
-    {
-        $this->statusCode = $statusCode;
-        $this->body = $body;
-        $this->headers = $headers;
-    }
-
-    /**
-     * The status code
-     *
-     * @return int
-     */
-    public function statusCode()
-    {
-        return $this->statusCode;
-    }
-
-    /**
-     * The response body
-     *
-     * @return string
-     */
-    public function body()
-    {
-        return $this->body;
-    }
-
-    /**
-     * The response headers
-     *
-     * @param bool $assoc
-     *
-     * @return array
-     */
-    public function headers($assoc = false)
-    {
-        if (!$assoc) {
-            return $this->headers;
-        }
-
-        return $this->prettifyHeaders($this->headers);
-    }
-
-    /**
-      * Returns response headers as associative array
-      *
-      * @param array $headers
-      *
-      * @return array
-      */
-    private function prettifyHeaders(array $headers)
-    {
-        return array_reduce(
-            array_filter($headers),
-            function ($result, $header) {
-
-                if (false === strpos($header, ':')) {
-                    $result['Status'] = trim($header);
-
-                    return $result;
-                }
-
-                list($key, $value) = explode(':', $header, 2);
-                $result[trim($key)] = trim($value);
-
-                return $result;
-            },
-            []
-        );
-    }
-}
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/use_cases/README.md b/libs/sendgrid/vendor/sendgrid/php-http-client/use_cases/README.md
deleted file mode 100644
index 84e4c2f..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/use_cases/README.md
+++ /dev/null
@@ -1,4 +0,0 @@
-This directory provides examples for specific use cases. Please [open an issue](https://github.com/sendgrid/php-http-client/issues) or make a pull request for any use cases you would like us to document here. Thank you!
-
-# Table of Contents
-* [Docker](docker.md)
diff --git a/libs/sendgrid/vendor/sendgrid/php-http-client/use_cases/docker.md b/libs/sendgrid/vendor/sendgrid/php-http-client/use_cases/docker.md
deleted file mode 100644
index 7051ec0..0000000
--- a/libs/sendgrid/vendor/sendgrid/php-http-client/use_cases/docker.md
+++ /dev/null
@@ -1,21 +0,0 @@
-# Docker
-
-You can run the example code at `examples/example.php` in a Docker container.
-
-From the root directory:
-
-```bash
-cp examples/.env_sample .env
-```
-
-Update the `.env` file with your SendGrid API Key. If you don't have one, you can get one [here](https://sendgrid.com/free?source=php-http-client).
-
-Add the `.env` file to your `.gitignore` file if you are publishing your code publically.
-
-```
-source .env
-docker build --build-arg sendgrid_apikey=$SENDGRID_API_KEY -t client .
-docker run client php examples/example.php
-```
-
-You should see a list of your SendGrid API Keys.
diff --git a/options.php b/options.php
index 1545288..b01d5af 100644
--- a/options.php
+++ b/options.php
@@ -121,7 +121,7 @@
 					<input type="email" class="form-control" id="adminemail" name="adminemail" value="<?php echo $adminemail; ?>">
 				 </div>
 			    </div>
-				<p>Both email addresses are required and used to send the MyBackup authentication emails.</p>
+				<p>Both email addresses are required and used to send the Backup4WP authentication emails.</p>
 			  </div>
 			  <p>How do you like to send the authentication emails? If you switch the options, it's not necessary to empty the other fields.</p>
 			  <div class="form-group">