I have limited checking email to 1-2 times per day most of the time for 14 years. My stress level increases whenever I fall off the wagon and start checking email more often. When I tell others they should try this, they worry that they will miss something urgent. This has never happened to me. I recently dialed my checks from 2 times per day to 1 time per day. It was a freeing feeling. You should try it. My office uses Outlook and it has a “Work Offline” button that you can use to do this.