My 2 day good luck streak ended tonight. I deleted and added back the suspect account and Mail wouldn't stay open despite doing this several times. I looked at Mail on my desktop (Monterey) and found a new spam email in that account, deleted it and then Mail on my MBA opened and is working as expected.
this does seem to support that certain emails cause the problem and that the crash will occur just having them in the inbox even without attempting to open them.
this does seem to support that certain emails cause the problem and that the crash will occur just having them in the inbox even without attempting to open them.