To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for Restart Button by doclucas
Rated 5 out of 5 stars
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
To create your own collections, you must have a Mozilla Add-ons account.