diff --git a/casdoorsdk/email_test.go b/casdoorsdk/email_test.go
index b956a2b..2c4e1ff 100644
--- a/casdoorsdk/email_test.go
+++ b/casdoorsdk/email_test.go
@@ -35,20 +35,3 @@ func TestEmail(t *testing.T) {
 		}
 	}
 }
-
-func TestEmailByProvider(t *testing.T) {
-	InitConfig(TestCasdoorEndpoint, TestClientId, TestClientSecret, TestJwtPublicKey, TestCasdoorOrganization, TestCasdoorApplication)
-
-	email := &emailForm{
-		Title:     "casbin",
-		Content:   "casdoor-go-sdk website test",
-		Sender:    "admin",
-		Receivers: []string{"TestSmtpServer"},
-	}
-	err := SendEmailByProvider(email.Title, email.Content, email.Sender, "provider_casbin_email", email.Receivers...)
-	if err != nil {
-		if !strings.Contains(err.Error(), "535 Error") {
-			t.Fatalf("Failed to send Email: %v", err)
-		}
-	}
-}