diff --git a/email_validation.go b/email_validation.go
index 1f6decad..da79779d 100644
--- a/email_validation.go
+++ b/email_validation.go
@@ -36,7 +36,7 @@ type EmailVerificationParts struct {
 // Reason contains error's description.
 type EmailVerification struct {
 	IsValid             bool                   `json:"is_valid"`
-	MailboxVerification bool                   `json:"mailbox_verification,string"`
+	MailboxVerification string                 `json:"mailbox_verification"`
 	Parts               EmailVerificationParts `json:"parts"`
 	Address             string                 `json:"address"`
 	DidYouMean          string                 `json:"did_you_mean"`
diff --git a/email_validation_test.go b/email_validation_test.go
index 1e402c44..89643f94 100644
--- a/email_validation_test.go
+++ b/email_validation_test.go
@@ -3,6 +3,8 @@ package mailgun
 import (
 	"testing"
 
+	"encoding/json"
+
 	"github.com/facebookgo/ensure"
 )
 
@@ -15,7 +17,7 @@ func TestEmailValidation(t *testing.T) {
 	ensure.Nil(t, err)
 
 	ensure.True(t, ev.IsValid)
-	ensure.True(t, ev.MailboxVerification)
+	ensure.DeepEqual(t, ev.MailboxVerification, "")
 	ensure.False(t, ev.IsDisposableAddress)
 	ensure.False(t, ev.IsRoleAddress)
 	ensure.True(t, ev.Parts.DisplayName == "")
@@ -43,3 +45,33 @@ func TestParseAddresses(t *testing.T) {
 	}
 	ensure.True(t, len(unparsableAddresses) == 1)
 }
+
+func TestUnmarshallResponse(t *testing.T) {
+	payload := []byte(`{
+		"address": "some_email@aol.com",
+		"did_you_mean": null,
+		"is_disposable_address": false,
+		"is_role_address": false,
+		"is_valid": true,
+		"mailbox_verification": "unknown",
+		"parts":
+		{
+			"display_name": null,
+			"domain": "aol.com",
+			"local_part": "some_email"
+		},
+		"reason": null
+	}`)
+	var ev EmailVerification
+	err := json.Unmarshal(payload, &ev)
+	ensure.Nil(t, err)
+
+	ensure.True(t, ev.IsValid)
+	ensure.DeepEqual(t, ev.MailboxVerification, "unknown")
+	ensure.False(t, ev.IsDisposableAddress)
+	ensure.False(t, ev.IsRoleAddress)
+	ensure.True(t, ev.Parts.DisplayName == "")
+	ensure.DeepEqual(t, ev.Parts.LocalPart, "some_email")
+	ensure.DeepEqual(t, ev.Parts.Domain, "aol.com")
+	ensure.True(t, ev.Reason == "")
+}