Rated 5 out of 5 stars

by LeeBinder on May 3, 2018 · permalink

*Successfully enabled ⌘⇧A to open Add-ons Manager in Thunderbird macOS:*

1. find and disable existing ⌘⇧A

2. add new key:
openAddonsMgr();
⌘⇧A

thumbs up - thank you Jonathan Kamens!!