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Disable Add-on Compatibility Checks

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Rated 4 out of 5 stars (120)
22,117 users
Updated Oct. 12, 2011

setenv

Automatically set environment variables based on preferences.

Not yet rated
0 users
Updated Oct. 11, 2011

Get before Send Requires Restart

Get messages for the account which is bound to the identity then send the message when you click the toolbar button or the menu item. If your SMTP sever authenticates using POP(IMAP) before SMTP, the extension is useful.

Rated 5 out of 5 stars (2)
812 users
Updated Oct. 10, 2011

Keyword Highlight Requires Restart

Keywordhighlight changes color/size/weight of your favorite keywords...

Rated 4 out of 5 stars (21)
2,817 users
Updated Oct. 7, 2011

Archived Link Requires Restart

Archived Link displays the URL of the Archived-At email message header field (RFC-5064) as a hyperlink.

Rated 5 out of 5 stars (1)
15 users
Updated Oct. 6, 2011

No Alt Text Requires Restart

Changes the default setting for new images to not use alternative text. This also works around a bug in some versions of SeaMonkey Composer and Thunderbird Message Compose whereby the Image Properties dialog would always demand alt text.

Rated 5 out of 5 stars (1)
2 users
Updated Oct. 6, 2011

LookOut Requires Restart

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

Rated 4 out of 5 stars (156)
156,683 users
Updated Oct. 5, 2011

Resize Header Requires Restart

An addon to let you resize the message header pane.

Rated 3 out of 5 stars (4)
187 users
Updated Oct. 4, 2011

Open As Webfolder Requires Restart

Open pages and links in Windows WebFolder WebDAV client (similar to "open in Webfolder" checkbox in IE's open...

Rated 3 out of 5 stars (10)
505 users
Updated Oct. 4, 2011

JSW:O Alert Requires Restart

Receive alerts for "Jet Set Willy: Online" hosted games

Rated 5 out of 5 stars (2)
2 users
Updated Sept. 28, 2011

Export for Thunderbird & Lightning Launcher Requires Restart

Export for Thunderbird & Lightning is the worldwide unique printing and exporting solution for Mozilla Thunderbird and Lightning for Windows.
Multi lingual user interface: English, German, French and Spanish

Rated 2 out of 5 stars (8)
687 users
Updated Sept. 28, 2011

Look Up in Dictionary Requires Restart

Looks up a selected word in OS X's Dictionary.app

Rated 5 out of 5 stars (44)
1,002 users
Updated Sept. 27, 2011

Free/Busy Requires Restart

Publish free/busy calendar file (*.ifb) via ftp or to a file. View other people's free/busy info in meeting organizer window. Integrate Thunderbird and Outlook calendars without Exchange server.

Rated 3 out of 5 stars (13)
872 users
Updated Sept. 27, 2011

Is It Compatible? Requires Restart

**Notice: This addon is no longer maintained.** Are your addons compatible with the next version of Firefox? Find out straight from the Addons window! **Version 0.6.0 is available from the Versions page, it was never approved by AMO**

Rated 4 out of 5 stars (37)
613 users
Updated Sept. 25, 2011

Highlighter Requires Restart

Quickly highlight some text in Thunderbird message composing windows.

Rated 4 out of 5 stars (51)
9,098 users
Updated Sept. 23, 2011

dwEasySubject Requires Restart

When you enter a destination, you are editing incomplete address, mailer help you compensate last word by use auto-complete. However, Subject is not used auto-complete. it is enter easy by auto-complete subject line choice sent in the past.

Rated 4 out of 5 stars (4)
141 users
Updated Sept. 23, 2011

Hide Menubar Requires Restart

Supports to hide Menu Bar automatically, you can press the ALT key to show it temporarily.

Rated 4 out of 5 stars (330)
2,662 users
Updated Sept. 23, 2011

SearchWith Requires Restart

Search selected text with various search services...

Rated 4 out of 5 stars (77)
814 users
Updated Sept. 21, 2011

Eortologio - Greek Namedays Calendar (Thunderbird) Requires Restart

This extension consists of a Greek Orthodox Namedays reminder. It displays in Thunderbird status bar current day's celebrated names.

Rated 5 out of 5 stars (2)
0 users
Updated Sept. 15, 2011

eCleaner Requires Restart

Clears preferences left by extensions after uninstallation

Rated 4 out of 5 stars (69)
4,960 users
Updated Sept. 15, 2011