Rated 5 out of 5 stars

by Bee Dee 666 on Jan. 6, 2018 · permalink

Still 5 stars even though we had to fix it ourselves, although the creator might not have had a chance yet.
Thanks to everyone who worked on the changes, and for the correct download link.
Just right-click on the Install button to save the .XPI file to a folder-directory.
(it is just a ZIP archive file with a .XPI extension)
Open the file by clicking on the download icon and right-clicking on the file and choosing "Open containing folder".
I use free 7-Zip, so I just opened the archive with a double-click (Windows 10 asked what program I want to open the file with, chose 7z), that opened it like an Explorer window, drag and dropped the bootstrap.js file into the windows folder-directory window, edited the file and found and made the commented out line change (use whatever text editor you have), saved it, and then drag and dropped the file back into the archive window.
Removed the old version in the add-ons screen in Thunderbird, then just drag and dropped the modified ,.XPI file onto the Add-ons window and restarted Tb.