Just updated SpamSieve today
it asked for admin PW
then mail app hung 3 times - force quit
restart my Mac Studio
and is just black I get the chime
- it flashes caps lock led on attempted restart - hold shift key down
- wtf did your update do?
The admin password is only used to replace the old SpamSieve.app file with the new one (making sure that you have the proper file permissions to do so).
I’m not sure why Mail would hang after an update. We’ve had no other reports of that. If it happens again, recording a sample of Mail could reveal the cause of the hang.
If the Mac won’t boot, that sounds like a macOS or hardware issue. That’s not something that an app could cause (or fix). Apple has a help page about this.