Newest Extensions



Lists the request flags for a specified requestee

Not yet rated
7 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
24 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.

Rated 5 out of 5 stars (1)
188 users
Added August 4, 2015

AFP protocol enabler No Restart

Enable afp protocol (afp://)

Not yet rated
10 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 4 out of 5 stars (17)
532 users
Added July 30, 2015


Report und grafische Auswertung für Messungen mit dem XL2-Audio und Akustik Analyzer von NTi Audio

Not yet rated
1 user
Added July 28, 2015


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

Rated 4 out of 5 stars (12)
500 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 3 out of 5 stars (2)
586 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 (14)
893 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
1,254 users
Added June 21, 2015


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

Not yet rated
30 users
Added June 19, 2015

Feedly Synchronizer No Restart

Synchronize your favorite RSS sources with Thundebird and Feedly

Rated 4 out of 5 stars (4)
125 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)
1,782 users
Added June 9, 2015

Page Colors & Fonts Buttons No Restart

Adds buttons to toggle the using the default page colors and fonts, and the page defined colors and fonts.

Rated 4 out of 5 stars (4)
568 users
Added June 7, 2015

Hitsteps Analytics

Hitsteps Analytics is a powerful real time website visitor manager, it allow you to view and interact with your visitors in real time.

Rated 2 out of 5 stars (1)
24 users
Added June 7, 2015

Find Buttons No Restart

Adds buttons to open and manage the find bar.

Not yet rated
97 users
Added June 6, 2015

About:about Button No Restart

A button that lists all the about pages that exist. Some of these pages are also provided as separate buttons.

Rated 4 out of 5 stars (3)
217 users
Added June 5, 2015

QFO - Quick Fuck Off

This extension serves the purpose of providing instant access to the FOAAS web service. FOAAS (Fuck Off As A Service) provides a modern, RESTful, scalable solution to the common problem of telling people to fuck off.

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