Junk Mail
I have multiple email accounts set up, but one of those transfers all email to the local "Junk" folder. I have tried the retrain function, turned off all adaptive junk menu selections, added the sender to my contacts list, and nothing seems to work.
Also, with the most recent update, Thunderbird continually crashes. Version 102.7.1 (32 bit) running Windows 7 Professional with service pack 1. (No intention of updating OS)
Opaite Mbohovái (2)
So what are the crash id's/ They might offer a clue. https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb#w_viewing-crash-reports
Mostly in the past folk who suddenly have all their mail in the junk folder had an antivirus solution doing it for them. So I suggest you try your windows 7 in safe mode with networking and see if the issues continue in that mode. Microsoft appear to still offer instructions https://support.microsoft.com/en-us/windows/advanced-startup-options-including-safe-mode-b90e7808-80b5-a291-d4b8-1a1af602b617#start-computer-safe-mode=windows-7
Thank you for responding, Matt. While the antivirus was not the answer, I did finally reinstall Thunderbird, delete the email file, and then rebuild the folders. Not sure which of these steps resolved the issue, but the issue has been resolved.