For the last few years, Apple Mail on my 2014 iMac has continually had issues. These issues have persisted across operating systems from High Sierra to now Big Sur. Every few days, I’ll sit down and find that Mail is not responding. When it’s not doing that, I find that I have to quit Mail daily, so that it downloads all of my email. I have 11 different email accounts (yes, I know … that’s a ton!) ranging from Google, Apple, Yahoo, Outlook, as well as my own domains. I’ve rebuilt all of the mailboxes and indexes, but still get no joy.
Any other suggestions or tips?