Ask HN: Email Clients with the Best UI

I'm looking to use an email client and I'm not looking for a clean simple interface. What are your recommendations? Answers with AI as a enhancement plugin for the application would be interesting too. Are there any good UI's for terminal applications if there aren't any good full graphical applications?

imho. a lot of text-based mail-clients have a decent and efficient interface.

among them: (al)pine ... but especially: mutt ... ;))