Apple introduced custom domain names for iCloud email in August of 2021 (I think, but feel free to correct me and I’ll correct this). The easiest way to set this up is probably to just obtain the domain name through Apple. You can also use iCloud Email for custom domains purchased through other registrars. The setup is fairly straight-forward, provided DNS is setup correctly (or that a large-enough DNS host is used that Apple has wired it up to their API to do it for you). To get started, login to iCloud. Then click on the apps selector at the top of the screen and click on Custom Email Domain.…