To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for ThreadVis by MBickermann
Rated 5 out of 5 stars
I use this fantastic gadget for years now. You can even trace threads across different folders with this tool. Chapeau to the author! I really hope that it will also be updated to comply with version 78 and above.
This review is for a previous version of the add-on (3.0.1).Just released 3.1.1 to make it compatible with Thunderbird 78.
To create your own collections, you must have a Mozilla Add-ons account.