Extensions by Weekly Downloads
SS Ancestry Quick Button Requires Restart
A quick button link to the website, ssancestry.comyr.com/.
BOINC Stats 2 Requires Restart
Displays your Total and Recent Average Credits for BOINC distributed computing projects in the status bar.
Batch Copy Requires Restart
Batch Copy creates a local copy of your IMAP account, copies all messages and maintains folder structure. Batch Copy can run incrementally to copy only new messages.
Soapy Requires Restart
Bypasses DNS-based censorship
NOTE: This was created as a SOPA protest in 2012. This does not work anymore for most sites. Use Tor instead.
Mark All Read Button Postbox Requires Restart
Adds a toolbar button to mark all emails as read.
Edit Custom Size Image Requires Restart
Fixes a bug in SeaMonkey Composer and Thunderbird Message Compose whereby the Image Properties dialog would always reset the image to actual size.
Limit_Offline_Message_Size Button Requires Restart
Limit the size of a message to download with a single click of the button for slow (and/or expensive) network connection.
Quick access to Tools->Account Settings->Disc Space->"To save disk space, do not download: Messages larger than XXkB"
Mailsleuth Requires Restart
Mailsleuth is a add-on for Thunderbird that provides you a full email header analysis of any email in your Inbox. This add-on is designed to provide a report on the email headers on any email you choose from your inbox. MAJOR updates for Feb 2013!
GQueues Tab Requires Restart
This extension uses the new special tab features of Thunderbird 3 to open the GQueues to-do list manager inside a Thunderbird tab.
Last Message Requires Restart
Navigate the folder to the last message in the moment the folder is opened.
MuteThread Requires Restart
For a long time, Thunderbird has supported ignoring threads in newsgroups. This is a prototype that explores bringing that functionality to email.
Nepali Patro Requires Restart
Calendar for Nepalese People
TheRealURL Requires Restart
Get URL information: expand short URLs, get title and content type information without visiting the site.
UPDATE, AUG 2013: THIS EXTENSION IS NO LONGER SUPPORTED. The source is open - if you wish to take on the development, you're welcome.
Mailopen Requires Restart
Open an email file from the commandline
Zenbu-Robot Requires Restart
This is a Joke Add-on.
Externals of Firefox and Thunderbird are changed.
New Mail Icon Requires Restart
Displays an icon in the system tray when new mail arrives.
A Better S/MIME GUI Requires Restart
Provides a better S/MIME GUI for Thunderbird.
Mutt Keys Requires Restart
Creates Mutt like key bindings for Thunderbird. Inspired by the mouseless extension.
Equations Requires Restart
Insert inline LaTeX equations into e-mail messages.