I have run my own mailserver for not quite 20 years. My preferred mail client is mutt, but I use K9 on Android several times a day and I set up rainloop, a web

I have run my own mailserver for not quite 20 years. My preferred mail client is mutt, but I use K9 on Android several times a day and I set up rainloop, a web mail client. When people ask me for advice and they are not in a position to run their own mail server, I generally recommend Fastmail.