fastmail.com - I used gmail since the good old days when I bought an invite on ebay. Yesterday, I switched to fastmail with my own domain. I'm not looking back.
It's indirectly relevant, because apart from UX issues, especially here on HN, I believe that people should also be aware of security and privacy issues.
I wrote the comment especially in the light of people tripping across parent's recommendation. (There are lots of other threads here on HN indicating how people wish to migrate from gmail to something else, due to other Google/Alphabet Inc issues.)
"Where requests for access are issued legally, we comply." [0]
Nearly every service provider complies with legally issued requests. The ones that don't are either lying to you or fly by night operations that I wouldn't trust my business with.