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Sensitivity Header + SPX

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
Forked from another add-on developed by ff_bob, added SPX header for Sophos security appliances

Not yet rated
0 users
Updated February 7, 2016

AVIM

Vietnamese-language input method editor (IME). Type diacritics directly into any Web page, Web app, or dialog box. Convenient, comprehensive, secure.
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Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, hộp thoại.

Rated 5 out of 5 stars (30)
3,779 users
Updated February 7, 2016

ExQuilla for Microsoft Exchange

Thunderbird email accounts, including contacts, connecting to Microsoft Exchange Web Services. This is a 60 day trial of a paid add-on.

Rated 3 out of 5 stars (90)
18,944 users
Updated February 7, 2016

Pan No Restart

Block ads and manage proxy.

Rated 5 out of 5 stars (77)
2,537 users
Updated February 5, 2016

Flex Confirm Mail

Confirm mail address and attachments based on flexible rules.

Rated 1 out of 5 stars (1)
7,544 users
Updated February 4, 2016

AntiGameOrigin v6 No Restart

AntiGameOrigin - the other OGame experience for all communities.

Rated 5 out of 5 stars (2)
3,325 users
Updated February 4, 2016

Todo.txt Extension

Thunderbird extension for the Todo.txt application

Not yet rated
199 users
Updated February 4, 2016

AutoProxy-ng

This is a fork of AutoProxy, which can run the latest version of Firefox.

Not yet rated
16 users
Updated February 4, 2016

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 (15)
1,095 users
Updated February 3, 2016

Rspamd-spamness

Rspamd spam filtering system score visualization.

Not yet rated
15 users
Updated February 3, 2016

Website Blocker

All the bugs have been fixed!
Everyone needs this add-on!
Block websites you don't want the browser to get into.
Block by a whole domain name or a specific address.
Block until further notice or until a certain date.

Rated 2 out of 5 stars (6)
10,240 users
Updated February 3, 2016

QuickPasswords

Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.

Now also includes SSO change (multi-domain pw) and Backup + Restore.

Rated 5 out of 5 stars (47)
7,280 users
Updated February 2, 2016

Blend In

Blends in OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS being used the most in the world. Thunderbird can also be blended in as Firefox.

Rated 4 out of 5 stars (10)
1,115 users
Updated January 31, 2016

RM: EXTERNAL:

Removes 'EXTERNAL: ' from the start of an email subject if it is preceded by 'RE:' or 'FWD:' (case insensitive). The removal is done after the 'Send' button is pressed.

Not yet rated
1 user
Updated January 29, 2016

Color Transform No Restart

Adapt page colors to your taste or need. Save your favorite color scheme for automatic coloration. Comes with 18 predefined themes and 24 basic transforms for hue, saturation, lightness and opacity. For Firefox 24.0 and newer.

Rated 3 out of 5 stars (12)
2,976 users
Updated January 29, 2016

Colorific No Restart

Colorize entire web pages manually or automatically. With 28 customizable themes that transform hue, saturation, lightness and opacity. For Firefox 28.0 and above. NEW: Copy themes and group color properties using drag-and-drop.

Rated 3 out of 5 stars (7)
1,777 users
Updated January 29, 2016

Cardbook

A new Thunderbird address book based on the CardDAV and VCARD standards.

Rated 4 out of 5 stars (23)
1,479 users
Updated January 29, 2016

DevPrefs No Restart

Automatically sets all preferences for Firefox addon developer production environment.

Not yet rated
350 users
Updated January 27, 2016

Saved Password Editor

Adds the ability to create and edit entries in the password manager.

Rated 5 out of 5 stars (220)
97,023 users
Updated January 27, 2016

Personas Plus

Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.

Rated 3 out of 5 stars (961)
367,721 users
Updated January 27, 2016