alt Hacker NewsI've been happy with fastmail. Their product and UX looks a little dated even - in a good way I realize. It's not trying to be anything its not.
Also iCloud paid accounts allow custom domains for email. The Apple mail product is way worse but it was amazingly simple to set up and I am happy I have my own domain.
Apple is extensively and heavily using GenAI internally, and I've not got confidence in their product quality going forward (macOS is still declining in overall quality, from my experience)