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.
CloseReview for Copy Message ID by OsadaP
Rated 5 out of 5 stars
Add-on funcionality is integrated in TB 142:
https://www.thunderbird.net/en-US/thunderbird/142.0/releasenotes/
To create your own collections, you must have a Mozilla Add-ons account.
