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

# Email Template Object

The object representing an email template.

<Info>
  In the request body, either `prebuilt_customization` or `custom_html_customization` may be specified but not both. If both are provided, a 400 Bad Request will be returned with an `invalid_argument` error.
</Info>