To use Activity Monitor to close the Mail app, follow these steps: This can sometimes fix the issue of the Mail app running slowly or crashing. Launch the Mail app again to see if the problem is resolved.įix #5: Close Out of Mail Using Activity MonitorĪnother fix you can try is to close out of the Mail app using the Activity Monitor rather than closing it through the app itself.Enter this text into the dialog box – /Users/your_profile/Library/Mail/IMAP-account_concerned/ *note that you should enter your actual profile name in the ‘your_profile’ section here.Select Go to folder from the dropdown menu.This can be caused by IMAP not syncing correctly. This fix can help if you notice the issue of no emails coming into your mailbox and can’t send any out either. If you see any issues, delete the account and then add it back into the system. This will allow you to see if there are any connection issues with your mail accounts.Select Connection Doctor from the drop-down menu.You can check on the Mail app connections to try and resolve this issue by following these steps: Another cause of problems with the Mail app after upgrading to Big Sur is missing Mail folders.

Mail on imac keeps freezing