Mail crashes despite repeated full resets
MacBook Pro with M1 chip; Sequoia 15.0.1, and running Spamsieve.
Mail loads, almost immediately shows a spinning ball, and will not even force quit. With a forced reboot Mail reopens on its own and immediately crashes again. Tried to do a reset by deleting the preference file, application state file, and then re-indexed. Nothing seems to help. Forced reboot and reopened in Safe Mode; but mail still crashes even then.
Seems to be related to an email that Mail is unable to fully delete.
Temporarily switched to Outlook, which I learned to hate when I had Windows computers, Would like to get Apple Mail working again.
MacBook Pro 16″, macOS 15.0