<aside> 💰 This question involves features that require using Buttondown for Professionals.

</aside>

1. If you're not signed up for Buttondown for Professionals, go ahead and upgrade your account!
2. Add the custom domain in your settings page.

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/7c955ae5-ee49-4568-bc76-0f2d3a9f5d1c/Untitled

3. Change the CNAME record of the domain you'd like to use as your custom domain to buttondown.email. The prompt should walk you through the rest of the process?