Rated 3 out of 5 stars

This add-on fills a badly needed gap in Thunderbird's message filtration logic, namely running filters only any folder at specified intervals

Rated 5 out of 5 stars

Thunderbird is not able to run filters on local or subfolders so you need to run filters manually. With this addon you can instead choose an intervall and all filters execute for a specific folder every X minute(s). Perfect!