Rated 5 out of 5 stars

by DrLove73 on Dec. 6, 2018 ·

Works on CentOS 7.6 (Thunderbird 60.3.0) on MATE. Shows tray and minimizes properly.
My thanks to developer and I add my voice for Mozilla to sign off on this addon.

This review is for a previous version of the add-on (1.4.7).