I moved to Fastmail for all my custom domains a while ago while trying to use less Google products and it's great. I've been setting up aliases for different categories of email, makes filtering very simple
Fastmail user for many years and multiple mailboxes and it's truly an outstanding email provider. Use IMAP most of the time, but the web interface is really powerful and stable. The best and most flexible alias options ever! Love you, FM! 🤗
I know I just recently stacked HEY, but I've been using Fastmail for hosting my own email from a couple of years now and they deserve to be stacked! Multiple domains, aliases, fast UI and super-fast search!