Rated 5 out of 5 stars
Dude, love(d) this extension! Looking forward to your update. Cannot understand why this is not an integral part of Thunderbird (hope they are read these...). They should pay you for the work you've done and integrate it.
Thanks for the very nice review and comments!
Actually I am part of the Thunderbird team and the plan when I finally have time is for me to bring the functionality internally. I have to do a lot of rewriting and I would like first to try to get this 78 compatible.