# Custom Domains

## Overview

By default, a WorkOS domain will be used for services such as sending email and hosting AuthKit. In the staging environment these will always use a WorkOS domain, however in production you have the option to provide your own custom domain.

This is a paid service, for which you can find additional details on our [pricing page](https://workos.com/pricing.md).

Custom domains can be set for:

- [Email](https://workos.com/docs/custom-domains/email)
- [AuthKit](https://workos.com/docs/custom-domains/authkit)
- [Admin Portal](https://workos.com/docs/custom-domains/admin-portal)
- [Authentication API](https://workos.com/docs/custom-domains/auth-api)