Rated 5 out of 5 stars
I thought this Add-on was fairly useful, until it stopped working in Thunderbird 68.2.1 ... now I realise that it is indispensable! I can't believe this kind of functionality isn't built into Thunderbird, or at least some kind of 'key assignable macro' feature.
I hope this Add-on is modified to work again soon.
Very many thanks for the useage I've had to date.
A new version that works with Thunderbird 68 should be available soon. See https://github.com/adamroach/tb-archive-this/blob/master/tb68-update.md for details