> ## Documentation Index
> Fetch the complete documentation index at: https://docs.badtogoodemails.com/llms.txt
> Use this file to discover all available pages before exploring further.

# API Reference

> We offer a robust collection of APIs to allow you to integrate our functionality into your marketing software and tools.

## Welcome

The `{{api_key}}` is located in your account on [Bad To Good Emails](https://badtogoodemails.com) under API Management API Keys.

All API endpoints are authenticated using the API key via QueryString parameter (HTTP GET) or the X-API-Key header (HTTP POST).

<Tip>
  Use the navigation on the left to access the different **API Endpoints**.
</Tip>

Or if you prefer we made our API Documentation available at the places below.

<Card title="" horizontal="true" href="https://api.badtogoodemails.com:8443/swagger/index.html">
  <img src="https://mintcdn.com/badtogoodemails/nu63GJ96IZ1elTBl/swagger.png?fit=max&auto=format&n=nu63GJ96IZ1elTBl&q=85&s=979ae4ce84733dd6e1aad6d3159ec6c9" alt="api-documentation-3.png" width="164" height="84" data-path="swagger.png" />
</Card>

**API Documentation Links:**

* [Swagger](https://api.badtogoodemails.com:8443/swagger/index.html)