My message filters appear not to be working automatically or when manually asking them to run. No error message appears, it's simply a case of it not doing anything. I was able to create a new filter and that worked, but no existing ones did. I dont yet know if the new one will work again as i've not yet received any new e-mails. I saw a similar thread but as I was not registered. couldn't reply. That thread suggested starting thunderbird in safemode and removing addons etc, tried that. Didn't work.