Add-ons
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.
CloseReviews for Protonmail Thunderbird theme by Schrotty
Rated 1 out of 5 stars
not work with latest TB91.
Rated 5 out of 5 stars
Super theme
Rated 5 out of 5 stars
The best Theme i have see. Hope we get more.
To create your own collections, you must have a Mozilla Add-ons account.
