Russ Key Requires Restart

Allows typing in phonetic Russian and transforming Russian translit into Cyrillic...

Edit As New Requires Restart

Adds "Edit As New" toolbar button to the main...

After Unsent Mail Is Sent Requires Restart

Sorry but this addon is no longer supported in TB 60. See below.

Run a program of your choice after unsent mail has been sent.

Close Window on IMAP deletion Requires Restart

Closes the mail window on delete, although 'mark as deleted' is activated for IMAP

ZenbuShiitake Requires Restart

SamePlace Instant Messenger Requires Restart

Extensible instant messaging client based on the XMPP (Jabber) protocol.

***ATTENTION***: it REQUIRES the xmpp4moz extension. Download it fromhttps://addons.mozilla.org/firefox/3632/, or get an all-in-one package fromhttp://www.sameplace.cc/downl...

FolderCheck Requires Restart

Allows you to easily tell Thunderbird to check multiple folders for messages

ThreadBubble Requires Restart

Make Thunderbird resort threads by date when a new message arrives. *** This add-on is no longer required for new versions of Thunderbird! ***

Foobar Controls Requires Restart

Allows you to control the Foobar2000 Mp3 player from the Firefox window...

Splash! Requires Restart

Adds a splash screen to most Mozilla and Mozilla Based products. Supports sound, opacity, CSS customization, custom images, and much more. You can add {appVersion}, {buildID} and {userAgent} to the loading text and it will be filled in for you.

Thundersomething Requires Restart

Changes the product name in various parts of Thunderbird for everlasting naming fun.
Make your Thunderbird wear a new mask every time.

compactfolder Requires Restart

A toolbar button for compacting/purging the currently-viewed...

No application/applefile Requires Restart

Prevents storing of the MIME Type "application/applefile".

MarkSubfolders Requires Restart

This Add-on provide ability to mark as read subfolders.

Serial Letter Requires Restart

Provides the ability to start writing a template-derived letter directly from within the address book. Supports also multiple recipients. Supports only TeX and similar systems at the moment.

IO.Translator Requires Restart

即时在线汉英互译 - Instant Online Translator (Chinese-English)

Go Google

Open google instantly with this super fast add on.And its just < 10KB.!
No need to type google in your address bar anymore.Just try this awesome to open up google instantly.

Couch Managers Mock Draft Monitor Requires Restart

Follow your slow CouchManagers mock draft from your status bar. Keep track of the draft progress and know right when you're on the clock.

Requires Restart

FTN-style message quoter (like GoldEd) & so on

ScrollToNext Requires Restart

Use your mouse-wheel to select the next message by placing the mouse over the right hand side of the message list pane and then scrolling.