Thunderbird has once again send out an update that creates new issues for Spamfighter to work correctly.


If you like you can revert to the old version that works correctly with Spamfighter.


Just go to your control panel and delete the current version of Thunderbird and download the version 91.0.3 from here:

https://thunderbird.en.uptodown.com/windows/download/3891415


Thunderbird will automatically set up your email in the process and load all your emails so nothing is being deleted.



If you want to avoid it from happening again in the near future you can turn off the automatic updates:


Go to the top menu and click on Tools - preferences. Under preferences search for "update" and in the new windows choose:

Check for updates, but let me choose whether to install them