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GProxy Tool Requires Restart

GProxy lets you set and clear GPass local proxy in Firefox and Thunderbird, and do more.

Rated 4 out of 5 stars (8)
1 user
Works with Thunderbird 1.0 - 16.*
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AVIM Requires Restart

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 (41)
2 users
Works with Thunderbird 2.0a1 - 62.*
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LookOut+ Requires Restart

LookOut is a plugin which allows to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

This version is a fix for Seamonkey 2.*.

Rated 4 out of 5 stars (5)
42 users
Works with Thunderbird 1.5 - 50.0
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LCD Clock Requires Restart

displays a LCD Clock in your Toolbar

Rated 4 out of 5 stars (26)
4 users
Works with Thunderbird 1.5 - 40.*
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Hindi Spell Checker

This is a real time spell checker for Hindi, supported on Firefox,
Thunderbird, and Seamonkey.

Not yet rated
175 users

AutoProxyMod Requires Restart

Based on original AutoProxy!

Rated 5 out of 5 stars (10)
0 users
Not available for your platform
Works with Thunderbird 3.0b3pre - 44.*
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Latin Dictionary

Latin dictionary

Rated 5 out of 5 stars (8)
344 users

Silent Block

Minimum and fast URL blocker.

Rated 4 out of 5 stars (31)
63 users
Works with Thunderbird 5.0 - 57.0a1
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Stego Block Requires Restart

Embeds a small secondary, encrypted message in an email, known as a Stego Block.

Rated 4 out of 5 stars (1)
0 users
Not available for your platform
Works with Thunderbird 1.5 - 51.0
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Launchy Requires Restart

Launchy will enable you to open links and mailto's with external applications...

Rated 3 out of 5 stars (87)
12 users
Works with Thunderbird 0.3 - 20.0a1
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eCleaner Requires Restart

Clears preferences left by extensions after uninstallation

Rated 4 out of 5 stars (69)
19 users
Works with Thunderbird 5.0 - 9.0a1
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ThunderBirthDay Requires Restart

Display birthdays from the Thunderbird addressbooks as events in Lightning.

Rated 4 out of 5 stars (97)
202 users
Works with Thunderbird 3.0 - 60.*
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CuteButtons

Adds icons to buttons and/or menus.

Rated 4 out of 5 stars (95)
67 users
Works with Thunderbird 8.0 - 60.*
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Hebrew spell-checking dictionary (from HSpell)

Hebrew spell-checking dictionary for Firefox and Thunderbird. Generated from data of the HSpell project version 1.4, and distributed freely under the AGPLv3.

Rated 4 out of 5 stars (20)
813 users

SoundPlus Requires Restart

SoundPlus customizes the sound that is played when a new message arrives for a particular contact in the address book, similar to mobile phones. There is also a variation that is played when a message arrives and it is a continuation of a thread.

Rated 3 out of 5 stars (15)
6 users
Not available for your platform
Works with Thunderbird 2.0 - 24.*
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TreeStat Requires Restart

Display the open/closed status of Mozilla's trees

Not yet rated
0 users
Not available for your platform
Works with Thunderbird 5.0 - 45.0
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Use Bcc Instead Requires Restart

Sorry but this addon is no longer supported in TB 60. See below.
Who among us has not made the mistake of sending a 'broadcast' email to a large number of recipients without using BCC; thereby revealing everyone's email addresses to all?

Rated 5 out of 5 stars (31)
47 users
Works with Thunderbird 2.0 - 57.0
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Compact Menu 2 Requires Restart

Add a compact menu button to the navigation toolbar, and hide the menu bar.

Rated 4 out of 5 stars (326)
18 users
Not available for your platform
Works with Thunderbird 3.0 - 10.0a1
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EmailPicky 4 Requires Restart

Grab email addresses from emails from any selected Email Folder and add them to your contacts. (Email Crawler / Email ID Grabber / Bounced email collector) - Thunderbird Plugin
Note: It doesn't create duplicates, but shows as 'xxx messages added'.

Rated 3 out of 5 stars (15)
35 users
Works with Thunderbird 1.5 - 33.0
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Bamboo Feed Reader Requires Restart

Feed reader | RSS - ATOM - OPML

This extension has NOT been rewritten with the new WebExtensions API (Firefox Quantum).
No future version is planned by the original developer.

Bamboo is still running with Palemoon.

Rated 4 out of 5 stars (259)
5 users
Works with Thunderbird 3.0 - 45.*
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