The MailWizz API uses the following error codes:
| Error Code | Meaning |
|---|---|
| 400 | Bad Request – Your request is invalid. |
| 401 | Unauthorized – Your API key is wrong. |
| 403 | Forbidden – The resource requested is hidden for administrators only. |
| 404 | Not Found – The specified resource could not be found. |
| 405 | Method Not Allowed – You tried to access a resource with an invalid method. |
| 406 | Not Acceptable – You requested a format that isn’t json. |
| 410 | Gone – The resource requested has been removed from our servers. |
| 429 | Too Many Requests – You’re making too many requests! Slow down. |
| 500 | Internal Server Error – We had a problem with our server. Try again later. |
| 503 | Service Unavailable – We’re temporarily offline for maintenance. Please try again later. |