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 MinimizeToTray revived by valsaven
Rated 5 out of 5 stars
It works great on Thunderbird 52+:
1. Download the addon
2. Unzip it with 7zip (for example)
3. Open install.rdf file with your favorite text editor
4. Find the <!-- Thunderbird --> block and update the em:maxVersion section to your version
5. Zip files and change extension from .zip to .xpi
6. That's it. Drag'n'drop it to Thunderbird.
To create your own collections, you must have a Mozilla Add-ons account.