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

# Introduction

> Official documentation for the Postable API - manage contacts, create cards, and organize your mailings

## Getting Started Quickly

To start using the Postable API:

1. [Create a Postable account](https://postable.com/signup) if you don't have one
2. Generate an API key from your [account dashboard](https://postable.com/account)
3. Authenticate your requests using the API key
4. Start making API calls to manage contacts, create cards, and more

## Authentication

The Postable API uses JWT Bearer token authentication. Include your API token in the Authorization header of all requests:

```bash theme={null}
Authorization: Bearer YOUR_API_TOKEN
```