Message and News Reading
Auto Zip Attachments Requires Restart
Auto Zip Attachments allows you to easily compress (zip) attachments.
Autoarchive Requires Restart
Automatically archives old mails
Read an e-mail, hit Autofile button and it is filed / moved to the right mail folder based on the sender's address. No drag/drop needed.
Autofile can discover folders to store each author mail. Will save you lots of time like defunct filemail.
Autohide Folders panel Requires Restart
Extension automatically hides the folders panel. The folder panel can be seen by placing the mouse pointer in the left corner of the window or by Accel-1 shortkey.
AutoProxy Requires Restart
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
AutoRssDeleter Requires Restart
Deletes rss message if the website link was clicked while Ctrl holding
The AutoSlide addon automatically moves the splitter between the thread and the message pane in Thundbird so that the thread pane is set to a optimal height.
Avans Imap-account setup Requires Restart
Avans Imap-account setup
Automatically do Archive/Copy/Delete/Move actions based on user defined rules
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.
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.
Direction control and BiDi-related charset misdetection correction
Bigger Toolbar Buttons Requires Restart
Forces all/any toolbar button icons to be displayed at 38x38 pixels (instead of the default 20x20 pixels). Small icons are displayed at their default size. Works with nearly all themes.
BorderColors Requires Restart
Color-codes compose windows depending the active e-mail identity, to avoid sending messages from the wrong account.
Bork Bork Bork! Requires Restart
The Swedish Chef travesty filter and URL blocker. View web pages or mail as spoken by the Swedish Chef like this...
"Zee Svedeesh Cheff trefesty feelter und URL blucker. Feeoo veb peges oor meeel es spukee by zee Svedeesh Cheff leeke-a thees."
BrowseInTab lets you open and browse any link in a Thunderbird content tab. Links are followed within the tab and back/forward navigation is supported. Also with enhanced Zoom customization and a url bar.
BrowsrBounce Requires Restart
Do links not load in the correct browser? Are they not loading at all? BrowsrBounce will fix that for you.
Bugmail Requires Restart
This extension adds bug status to the header pane. It currently supports Bugzilla, Trac, Flyspray and Launchpad.
Bugmail (fixed version) Requires Restart
A bugzilla companion (fixed version). Originally maintained by Fabrice Desré.
Bugzilla Helper Requires Restart
Quickly reply to your bugmail on bugzilla.mozilla.org without leaving Thunderbird.