They do, yeah, and the email is RoundCube from memory? I have a personal Nextcloud and really can’t fault them for using it in place of building Yet Another in-house drive solution - it’s good software, bront.

For people who want custom domain support, as well as SMTP/IMAP, but still euro-based, Nubo may be more what you’re looking for if you’re OK with dealing with a newer company.