Rated 5 out of 5 stars

doclucas কর্তৃক নভে. 6, 2020 তারিখে ·

Works perfectly fine on TB 78.4
Once installed, it automatically places a restart button on the Mail Toolbar:
https://i.imgur.com/n8HDCqL.png

This review is for a previous version of the add-on (1.0).