Can you customize the email domain from Clerk when a user signs up via email?

[lancejpollard]

The "Domains > DNS" page on the Clerk dashboard has 3 email domains it wants me to add CNAMEs for, like clk._domainkey.mysite.com. Does that mean the emails will come from something like no-reply@clk._domainkey.mysite.com? Or how do the email domains show up? I couldn't find that info anywhere in the docs.

Is it possible to have the emails come from a specific domain (mysite.com) or subdomain (mail.mysite.com)?

Thanks!