TB Causes System Crashes in Mojave v.10.14.6
I recently took my 2015 iMac 27" desktop computer in for repairs and updates. Mac OS High Sierra was updated to Mojave 10.14.6, and Thunderbird was updated to the latest version, 78.12.0. Since then I've experienced 4 or 5 system crashes that cause the screen to go black, then require either a restart or a login to the computer. Common to all these system crashes was that TB was running. This morning, a Zoom meeting was twice interrupted by (a) a crash that required the computer to restart, and (b) a crash that required a login. It seems that TB is causing these crashes. How to fix this?
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Adding to my report above: after I took my computer home from the repair shop, and before the system crashes occurred, Thunderbird unexpectedly quit on 3 occasions. I was able to restart TB with no loss of data. Long-standing TB problem: the TRASH file disappeared several years ago, and since then I've been unable to put emails into the trash and empty the trash (take messages off the server). The repair people were not able to restore the Trash file! I now use GMail to trash emails and to empty both Trash and Spam folders. How to restore the Trash folder and the SPAM folder on TB, and how to empty the Trash & SPAM folders on TB so that they remove those emails from the server?
Post your Crash IDS from Help/Troubleshooting, Crash Reports. An ID is a long string beginning with bp-...
In the meantime, see if it still crashes in safe mode (hold Option when launching TB), or when OS X is run in safe mode.
With gmail accounts, the recommended setting in Account Settings/Server Settings is 'When I delete a message', 'Just mark it as deleted'. Trash is emptied by gmail automatically after a fixed period, or you can 'Empty Trash on Exit'. If Trash or any other IMAP folder is missing, right-click the account in the Folder Pane, Subscribe..., Refresh, check the box. For POP accounts, only the Inbox is downloaded, so it's not possible to empty the Spam folder with a command from TB.