Rated 5 out of 5 stars

The Thunderbird junk filter doesn't tell you much about what it's up to. This add-on provides the information you need, and extra training buttons. It's an extremely welcome add-on provided by a developer who takes great pains to ensure that it keeps up to date with new versions of Thunderbird. It would be nice if the "mark and train" functions provided by the add-on's buttons could be duplicated in the right-click menu for an individual message, but that's a very minor point.

This review is for a previous version of the add-on (1.0.2).