> 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/mailgun.md).

# Mailgun credentials

You can use these credentials to authenticate the following nodes:

* [Mailgun](/integrations/builtin/app-nodes/n8n-nodes-base.mailgun.md)

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

* Create a [Mailgun](https://www.mailgun.com/) account.
* [Add and verify a domain](https://help.mailgun.com/hc/en-us/articles/360026833053-Domain-Verification-Setup-Guide) in Mailgun or use the provided sandbox domain for testing.

## 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 [Mailgun's API documentation](https://documentation.mailgun.com/docs/mailgun/api-reference/api-overview) 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 Domain**: If your Mailgun account is based in Europe, select **api.eu.mailgun.net**; otherwise, select **api.mailgun.net**. Refer to [Mailgun Base URLs](https://documentation.mailgun.com/docs/mailgun/api-reference/api-overview#base-url) for more information.
* An **Email Domain**: Enter the email sending domain you're working with. If you have multiple sending domains, refer to [Working with multiple email domains](#working-with-multiple-email-domains) for more information.
* An **API Key**: View your API key in **Settings > API Keys**. Refer to [Mailgun's API Authentication documentation](https://documentation.mailgun.com/docs/mailgun/api-reference/mg-auth) for more detailed instructions.

## Working with multiple email domains <a href="#working-with-multiple-email-domains" id="working-with-multiple-email-domains"></a>

If your Mailgun account includes multiple sending domains, create a separate credential for each email domain you're working with.