Rated 2 out of 5 stars

Opacus Pro plugin works as designed if you are willing to stay on v. 68.x well past general availability of 78.x - which is hard to do given Thunderbird insistence on upgrading...

Having communicated to developer[s] only to receive *no response*

If it were free, I get it, but we pay $30.00/user/year to use this software for 15 + users. :(

If you are thinking of paying for the Pro and using anything after 68.x, save your money.

You've left this review on the free version, but accept your point is valid.

The Thunderbird team have done sterling work in keeping Thunderbird up to date with Firefox, but it has meant a significant re-write of the add-on last year, and a full rewrite of every component in the add-on this year - almost no code from the original can be salvaged. That work is in progress, and we would just ask you to bear with us (note that even now some of the underlying APIs we need to recreate all the existing features are not readily available).

Thanks, Jon and the Opacus team.