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

# Register Domain

> Register a new custom domain for email sending.

### Request Body

<ParamField body="domain" type="string" required>
  The domain name (e.g. yourdomain.com)
</ParamField>

<RequestExample>
  ```json Request theme={null}
  {
    "domain": "yourdomain.com"
  }
  ```
</RequestExample>

<ResponseExample>
  ```json Response theme={null}
  {
    "success": true,
    "data": {
      "id": "b7e1-9283-acde-4912-8839",
      "domain": "yourdomain.com",
      "verification_status": "pending",
      "provider": "stalwart"
    }
  }
  ```
</ResponseExample>