SelfMailKit email service APIs allow you to send transactional emails, manage domains, and handle audience and contacts programmatically.

The APIs for the managed and self-hosted versions are the same. The only difference is the base URL, which is where you use your own domain for the self-hosted version.

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Getting Started

To start using the email service APIs:

  1. Create an API key from the dashboard
  2. Use your API key in the Authorization header for all requests:
Authorization: Bearer <your-api-key>

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Base URL

All API endpoints are prefixed with api. subdomain:

The base URL is https://api.selfmailkit.com

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API Versioning

The current version of the API is v1. All endpoints are prefixed with /v1/:

https://api.selfmailkit.com/v1/emails

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Error Handling

The API uses standard HTTP status codes and returns error messages in a consistent format:

{
  "message": "Error description",
  "code": "error_code" // Only included for authentication errors
}

Common status codes:

  • 200: Success
  • 201: Created
  • 204: No Content
  • 400: Bad Request
  • 403: Forbidden
  • 404: Not Found
  • 429: Too Many Requests

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Support

Need help? We’re here for you: