Rated 5 out of 5 stars
This appears to be the only working addon that allows you to minimize to tray on Thunderbird >= 60. Running on Windows 10, and everything is perfect now, thank you. Your hard work is appreciated.This review is for a previous version of the add-on (1.4.4).
Thank you :)
Please note that on Windows 10 the context menu that should appear when right click on the tray icon has been repaired but will be available once this addon allowed / reviewed on this site (in order not to delay its verification).