Extensions by Name

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ThunderShot

Create screenshots of emails

Rated 5 out of 5 stars (2)
32 users

Thundersomething

Changes the product name in various parts of Thunderbird for everlasting naming fun.
Make your Thunderbird wear a new mask every time.

Rated 4 out of 5 stars (8)
169 users

ThunderSync

Allows to synchronise Thunderbird's addressbook with external directories/files. Every contact is exported/compared with an external file. Right now, only vCard version 2.1 is supported as export file format.

Rated 4 out of 5 stars (8)
9,041 users

ThunderTabs

This add-on is a button on your toolbar that lets you open web apps as Tabs in Thunderbird. Use it to load Google Mail, Google Wave, Google Voice, and other "inboxes" (or any url) as tabs within Thunderbird, making it your communications hub.

Rated 4 out of 5 stars (8)
510 users

thundertoe

quote forwarded message just as replying

Not yet rated
19 users

ThunderUpdate

Have ThunderBrowse version 2.8.7 or earlier? Install 3.0 from here: https://addons.mozilla.org/en-US/thunderbird/addon/5373 YOU DO NOT NEED TO INSTALL THUNDERUPDATE. GO INSTALL THUNDERBROWSE INSTEAD.

Rated 5 out of 5 stars (11)
62 users

Timeline

A Timeline calendar view

Rated 4 out of 5 stars (30)
1,345 users

Timer Fire

A simple tool to trigger some of the background timers.

Rated 5 out of 5 stars (1)
51 users

Timestamp

Inserts the current date/time into a message or an input field in the browser.

Visit my Timestamp site for recent versions and news.

Rated 4 out of 5 stars (18)
1,159 users

Tiny JavaScript Debugger

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavsScript.

Rated 4 out of 5 stars (3)
12,831 users

Tiny Menu

Replace the standard menu bar with a tiny menu popup.

Rated 5 out of 5 stars (285)
10,352 users

TipTopic

While you're surfing your favorite pages/topics on the web TipTopic informs you on who else is browsing the same pages/topics and is interested in/ available for discussion. Enjoy live dialog with your favorite topic followers while surfing the web!

Not yet rated
10 users

Titlebar Tabs Cleaner

A toolbar button to remove the tabs from the Windows titlebar back to their original place. Provides an easy way to undo the changes introduced by Thunderbird 17 or switch between the two modes effortlessly.

Rated 5 out of 5 stars (5)
431 users

TitleCase For Thunderbird

Transform strings into Title Case, Proper Case, Start Case, Camel Case, Upper Case, and Lower Case. Highlight your text and only changing what you highlighted.

Rated 4 out of 5 stars (7)
379 users

TMS Bulk SMS

Send SMS text messages directly from Thunderbird, without using a tethered phone! Integrates with Thunderbird's Address Book and allows SMS mailing lists for quick and easy bulk or individual messaging. Uses Flash Media Group's SMS service.

Not yet rated
242 users

Today's messages

Show only your messages received during the current day, the last 7 days or the last 30 days thanks to 3 buttons.

Rated 4 out of 5 stars (12)
1,349 users

Todoist for Thunderbird

Todoist is a leading online task manager and we manage millions of todos! Todoist for Thunderbird makes it super easy to manage your todos and email directly from Thunderbird.

Watch a short video:
https://www.youtube.com/watch?v=VixEQJb5Qc0

Rated 4 out of 5 stars (9)
3,977 users

Toggle Development Profile Prefs No Restart

Toggles Development Profile Preferences On When Enabled And Off When Disabled.

Not yet rated
46 users

Toggle Headers

Allows toggling the message header setting through a keyboard shortcut.

Rated 3 out of 5 stars (2)
757 users

Toggle Proxy

Toggle Proxy adds a status bar/toolbar icon to toggle between two proxy settings which can be set in the preferences or toggle via a shortcut key (alt + x) if you don't use the add-on bar.

Rated 4 out of 5 stars (31)
9,474 users