Add-ons
Review for Return Receipt Toolbar Button by itinchev
Rated 5 out of 5 stars
Great Addon. Are you planning an update for the newest versions?
To create your own collections, you must have a Mozilla Add-ons account.
- get to know add-ons
- About
- Blog
- Developer Hub
- Forum
Privacy Policy | Report Trademark or Copyright Infringement | Legal Notices | Report Misuse of Thunderbird Trademark | Report a bug
Except where otherwise noted, content on this site is licensed under the
Creative Commons Attribution Share-Alike License v3.0 or any later version.