Response Codes
The Zoho Mail REST API returns various response codes to indicate the status of API requests, whether successful or failed.
| Code | Description |
| 200 | SUCCESS - The API request was successful and completed without any errors. |
| 201 | CREATED - A new resource has been successfully created as a result of the API request. |
| 400 | BAD REQUEST - The input parameters provided in the request are invalid or incorrect. The requester must modify the input and resend the request. |
| 401 | UNAUTHORIZED -The request requires valid authentication credentials, which are either missing or invalid.The user must provide proper authentication to access the requested resource. |
| 403 | FORBIDDEN - The user is authenticated but not authorized to perform the requested action. |
| 404 | NOT FOUND - The requested resource could not be found or the URL is invalid. |
| 500 | INTERNAL ERROR - The server encountered an unexpected error while processing the request. Review the request and try again later. |