Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more
Gif Remover No Restart
To fastest your browser to surfing internet without extension gif.
Replace integrated password managers storage with zx2c4's pass (www.passwordstore.org)
Fixes the Signature Stacking bug for Forwards/Replies.
Adds a multiweek view to...
Nntpthreads lets you add up to four new buttons in the toolbar to easily access the menu item from "View > Threads"...
Non-official addon for Wunderlist. Easily transform a mail into a task for Wunderlist with a single click.
This is an example extension that adds a simple year view to Sunbird/Lightning.
Note that freebusy information is only provided if all calendars are cached. See long description for more info. Also, Calendar 1.0pre with bug 489590 fixed is required.
mozCleaner No Restart
Cleans your Firefox, Thunderbird, SeaMonkey, Fennec (unstable), Instantbird and BlueGriffon.
Enhances control over some aspects of tabbed mail browsing.
Extension to pass e-mail in eml (raw) format directly to the script specified
Boomerang E-Mail is an Add-on for the Thunderbird E-Mail-Client and is based on the Boomerang e-Mail algorithm (patent pending).
It provides functionality to send a certain e-mail (including attachments) to several recipients one after the other and...
Add CalDAV search & subscribe feature to Lightning
This is a cut down version of Nightly Tester Tools by Mossop, which is 77.6 KB. I've only included the "copy build id" and "build id in titlebar"...
Purge events from Sunbird and Lightning calendars
Test Pilot for Thunderbird No Restart
Add-on has now been discontinued, see below.
This add-on is not compatible with your version of Thunderbird because of the following:
- Add-on has opted into strict compatibility checking.
Displays the number of unread messages in all inboxes on your dock.
Extension for Email Spoofing Detection