# Errors

When interacting with the **Mailzeet API**, it is important to understand the HTTP response codes used to indicate the success or failure of requests. This section provides a summary of these codes and their meanings in our context.

### Summary

* Codes in the **2XX** range mean that the API request was processed successfully.
* Codes in the **4XX** range mean that something was wrong with the data that you sent. For example, you might have missed some required parameters/headers, or you might be using the wrong API credentials.
* Codes in the **5XX** range indicate an error in processing on our end.

### Common HTTP Codes

| HTTP Code | Meaning                                                                                                                                      |
| --------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| 200       | OK - The request was successful.                                                                                                             |
| 201       | Created - The request was successful, and a resource was created.                                                                            |
| 400       | Bad Request - The request was invalid or cannot be processed.                                                                                |
| 401       | Unauthorized - Authentication credentials were missing or incorrect.                                                                         |
| 403       | Forbidden - The request is understood, but it has been refused.                                                                              |
| 404       | Not Found - The requested resource could not be found.                                                                                       |
| 500       | Internal Server Error - An error occurred on the server. In this case, feel free to retry or contact [support](mailto:support@mailzeet.com). |
| 503       | Service Unavailable - The server is currently unable to handle the request.                                                                  |

Understanding these response codes will help you effectively handle both successful operations and errors when interacting with the **Mailzeet API**.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.mailzeet.com/errors.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.