Rated 5 out of 5 stars
I have been using this add-on with TB 3.1.15 for a month now with no significant errors so far (see below for a minor problem). Congrats to the developer.
1. The colorful pictorial representation of threads in a time line is a beauty.
2. The knots representing the messages are clickable and open the
messages. More importantly, moving a message to a different folder has no adverse effect.
None so far.
the option to display the time between two messages doesn't work for me