MacMail quits immediately after opening
No problems with Mail until today. Now won't stay open at all. It won't work in Safe Mode either, but stays open a couple seconds longer. Not enough to resolve anything. I turned off the connection to Mail in Preferences/Internet Accounts/ICloud. Mail now works, but of course the Icloud and AOL inboxes are not there. I have also viewed the Library/Containers/ in Finder mode and the com.apple.mail folder is not to be found. There IS a com.apple.MailServiceAgent file. I have considered upgrading to Ventura from Monterey 12.6 to see if this helps. It would prefer to resolve this in Monterey before proceeding with an upgrade. Help is appreciated. Happy New Year to me!
iMac 27″, macOS 10.15