> 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/mailcheck.md).

# Mailcheck credentials

You can use these credentials to authenticate the following nodes:

* [Mailcheck](/integrations/builtin/app-nodes/n8n-nodes-base.mailcheck.md)

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

Create a [Mailcheck](https://mailcheck.co/) account.

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

* API key

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

Refer to [Mailcheck's API documentation](https://app.mailcheck.co/docs?from=docs) for more information about the service.

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

To configure this credential, you'll need:

* An **API Key**: Generate an API Key in the API section of your dashboard. Refer to [Mailcheck's How to create an API key documentation](https://mailcheck.co/create-api-key) for detailed instructions.