Newest Extensions


Lightning Colors Reminder

Let's show the calendar color on Lightning reminders!

Not yet rated
17 users
Added September 30, 2015

Crash Me Now! (Simple) No Restart

Crash yourself with ease

Not yet rated
1 user
Added September 29, 2015

Disable About Something

Provides ability to disable "about:*" pages by the configuration.

Not yet rated
13 users
Added September 24, 2015

ThunderBird Ticker

Extension for creating support tickets based on mail.

Not yet rated
1 user
Added September 10, 2015

Copy Reminder List To Clipboard No Restart

Provides button to copy the list of current reminders to the clipboard.

Not yet rated
15 users
Added September 2, 2015

Dictionary for recipient No Restart

Sets the spell check dictionary based on the first recipient

Not yet rated
43 users
Added August 25, 2015


Lists the request flags for a specified requestee

Not yet rated
5 users
Added August 18, 2015

Sensitivity Header

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.

Not yet rated
15 users
Added August 13, 2015

Reinstall Last Installed Add-on No Restart

One-click reinstall last installed addon, useful when developping restartless addon

Not yet rated
2 users
Added August 10, 2015

Squared Australis Tabs (Tb) No Restart

A small and simple extension, which replaces the curved tabs of the Australis design with squared ones, similar to Thunderbird v14 and prior.

Not yet rated
118 users
Added August 4, 2015

AFP protocol enabler No Restart

Enable afp protocol (afp://)

Not yet rated
11 users
Added August 4, 2015

Extension List Dumper 2

This extension adds a button ("Dump list") to the Add-ons window. When this button is pressed, a new window is opened with the list of installed extensions, themes or plugins...

Rated 5 out of 5 stars (16)
342 users
Added July 30, 2015


VCard Addressbook : a new addressbook for Thunderbird based on the VCARD standards

Rated 4 out of 5 stars (9)
178 users
Added July 21, 2015

Profile Buttons No Restart

A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.

Rated 1 out of 5 stars (1)
363 users
Added July 8, 2015

Kardia CRM Add-on for Thunderbird

(beta) Integrates with the Kardia CRM system, to provide information about the people in the Kardia CRM database directly via Thunderbird.

NOTE: This add-on requires a Kardia CRM server (see description for more information).

Not yet rated
1 user
Added July 2, 2015

Add-ons Manager - Version Number No Restart

Restores add-on version number inside Add-on Manager for latest builds of Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (10)
803 users
Added June 27, 2015

about:config Button No Restart

Open about:config to change hidden settings that cannot be edited from the Options window. All Mozilla based programs have settings that can not be changed in the options window.

Not yet rated
909 users
Added June 21, 2015


This extension implements a convenient way to check and upload attachments against

Not yet rated
17 users
Added June 19, 2015

Feedly Synchronizer No Restart

Synchronize your favorite RSS sources with Thundebird and Feedly

Rated 3 out of 5 stars (2)
64 users
Added June 15, 2015

All Menus Button No Restart

Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.

Rated 5 out of 5 stars (5)
1,944 users
Added June 9, 2015