Most Popular Extensions

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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)
6 users

Wepware - Capture and Share Live Content Requires Restart

Grab live snapshots of anything on the internet, organize your collected content into folders and share with friends through SNS.

Not yet rated
6 users

Synnefo for Filelink Requires Restart

Add Synnefo support to Thunderbird's Filelink feature.

Not yet rated
6 users

Enigma-code Requires Restart

Proste i szybkie szyfrowanie korespondencji e-mail, jak i dowolnego tekstu. Algorytm szyfrowania oparty na sposobie szyfrowania maszyny Enigma.

Not yet rated
6 users

Last Message Requires Restart

Navigate the folder to the last message in the moment the folder is opened.

Rated 4 out of 5 stars (6)
6 users

Requires Restart

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

Rated 4 out of 5 stars (5)
6 users

Thunderbird Are Go Requires Restart

This plays audio to boost emotion when Mozilla Thunderbird start up.
Mozilla Thunderbird Are Go!

Rated 5 out of 5 stars (1)
6 users

Gmail IMAP Account Setup Requires Restart

Add Gmail IMAP options to the account wizard. You can easily set up Gmail IMAP by this extension.

Rated 4 out of 5 stars (37)
6 users

World Weather+ Requires Restart

Displays local weather information from around the world...

Rated 4 out of 5 stars (32)
6 users

DOM Inspector Requires Restart

Inspect the DOM of HTML, XUL, and XML pages, including the mail...

Rated 2 out of 5 stars (5)
6 users

Becky! Import Requires Restart

Provides the ability to import messages, address book, filters and account settings from Becky!, an email client used in Japan.

Not yet rated
5 users

xultray for gecko 1.9.2 Requires Restart

Show xul application (gecko 1.9.2 based) in system tray. supports Firefox 3.6 / 3.7 , Thunderbird 3.1

Rated 5 out of 5 stars (8)
5 users

MDN Extended Requires Restart

Allows the recipient of a message to send a return receipt (MDN: Message Disposition Notification) on message deletion. This addon is usefull for better experience with Notification Viewer addon.

Rated 5 out of 5 stars (1)
5 users

Equations Requires Restart

Insert inline LaTeX equations into e-mail messages.

Rated 5 out of 5 stars (22)
5 users

ClassicFox Requires Restart

ClassicFox fixes problems with the appearance of the default theme in Windows Classic.

Rated 5 out of 5 stars (5)
5 users

Fritz!BoxDial Requires Restart

Rated 4 out of 5 stars (8)
5 users

Fast Mail Redirect Requires Restart

Allows the fast redirection of emails...

Rated 5 out of 5 stars (5)
5 users

Shift-Delete Controller Requires Restart

Controls shift-delete button behavior. Confirmation dialog is optionally displayed in user defined...

Rated 3 out of 5 stars (9)
5 users

Scroll Menus On Drag Requires Restart

Scrolls menus when dragging, fixing bugs 194319, 240709, and 349932. Scrolls all autorepeatbuttons and prevents bookmarks menu hiding on all menuseparators.

Rated 3 out of 5 stars (6)
5 users

Edit HTML Source Requires Restart

You can now edit the HTML source in the Compose...

Rated 3 out of 5 stars (15)
5 users