This problem is back today. I typed 'Safari' in the title of this posting but it should have been 'Mail app'. My MacMini is the M1 version. Running 12.5.1.
I restart in safe mode, and go to options, but none of them are what I need. Restore from backup? No, thanks. I changed the security setting, whatever difference that might make. I don't have any other choices that remotely look to be what I need. I did plug-in my wireless keyboard, too. Doesn't matter since the shift/restart method is only for Intel machines.
So, exactly what am I supposed to do when safe mode shows up? If I click on the hard drive icon, it simply restarts, and nothing is any different. If I go to 'options', none of them are what I need. WTF??