I was hoping that with Catalina the problem would be solved, instead here I am. Outlook 2019 isn't too bad either, although it is still Microsoft Outlook, so there's 'a lot there'. So, if you're someone who really prefers a good desktop email client, you might want to look at a program like Unibox (super slick, ~$15, and/or available through Setapp). So I wouldn't hold your breath for a fix for these mysterious stirrings. Its one of a handful of apps that has never once got a full rewrite (along with the likes of Grapher and Activity Monitor). Maybe try a different mail app? The thing is, Mail.app has been a really wonky program since time immemorial. Maybe try to get in the habit of closing Mail when watching a movie? It'll save you this hassle, a little battery life, and I promise, your mail will still be there when your movie is over. You can also put some more background apps there: music ? I've been doing it for several weeks and got no issues. If you need real time notifications, best is to give the Mail app its own desktop in one corner. 'Prefer opening messages in split view when in full screen.'

Top email programs for mac