Rated 1 out of 5 stars

This used to work once upon a time and it was great! I am not sure how long ago it stopped working but it has been a while. I have Thunderbird version 38.3.0. Reinstalled but nothing shows. The options button within the ThreadVis extension doesn't even function or bring up any window. It just seems dead.

This review is for a previous version of the add-on (2.2.0).