Error Response
| Status Code | Error | Message |
|---|---|---|
| 400 | ERROR_CALLBACK_URL | Callback Url is invalid. |
| 400 | ERROR_CALLBACK_METHOD | You can choose callback method are GET, POST or PUT method. |
| 401 | ERROR_AUTHENTICATION_FAILED | Authentication failed. |
| 402 | ERROR_INSUFFICIENT_CREDIT | Insufficient credit. |
| 402 | ERROR_EXPIRED_CREDIT | Expired credit. |
| 403 | ERROR_API_KEY_SUSPENDED | This API key has been suspended. |
| 403 | ERROR_IP_NOT_ALLOWED | This IP has been suspended. |
| 404 | ERROR_SENDER_EMAIL_NOT_FOUND | Sender not found. |
| 404 | ERROR_TEMPLATE_EMAIL_NOT_FOUND | Email template not found. |