> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/integrations/builtin/credentials/postmark.md).

# Postmark credentials

You can use these credentials to authenticate the following nodes:

* [Postmark Trigger](/integrations/builtin/trigger-nodes/n8n-nodes-base.postmarktrigger.md)

## Prerequisites <a href="#prerequisites" id="prerequisites"></a>

Create a [Postmark](https://postmarkapp.com/) account on a Postmark server.

## Supported authentication methods <a href="#supported-authentication-methods" id="supported-authentication-methods"></a>

* API token

## Related resources <a href="#related-resources" id="related-resources"></a>

Refer to [Postmark's API documentation](https://postmarkapp.com/developer/api/overview) for more information about the service.

## Using API token <a href="#using-api-token" id="using-api-token"></a>

To configure this credential, you'll need:

* A **Server API Token**: The Server API token is accessible by Account Owners, Account Admins, and users who have Server Admin privileges on a server. Get yours from the [**API Tokens**](https://account.postmarkapp.com/api_tokens) tab under your Postmark server. Refer to [API Authentication](https://postmarkapp.com/developer/api/overview#authentication) for more information.