Most Popular Extensions
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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.
Extension Test Requires Restart
A simple add-on for extension testers, especially AMO editors and developers who plan to submit their add-ons to AMO.
RSS Dashboard Requires Restart
This addons gives you a dashboard-style view of your RSS feeds, like iGoogle or Netvibes (widget view). This is an experiment, so it is still very rough. Right now, consider this as a proof-of-concept rather than a real addon.
Identity Select Requires Restart
This extension allows you to choose the identity of your new email from a popup menu directly from the Write button. This feature behaves in a similar manner as the Get Mail pulldown menu. In addition, the default behavior of the Write button is...
DSN Settings Requires Restart
Adds user interface settings for Delivery Status Notification (DSN) requests. This addon is usefull for settings for Delivery Notification request and better experience with Notification Viewer addon.
Ubuntu Unity unread count and quicklist Requires Restart
Notify Unity of new mails in Thunderbird. Also, right click Thunderbird icon and get new quicklist items: Compose new mail and Contacts.
Based in awn-notif by Thesa aka Florian Birée
Planteen Host Email Requires Restart
This is the official quick access link for Planteen Host Email. Plenty of FREE extras! Business and Corporate class email. Use your own domain, reliable, secure and access from any device.
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.
GDirections Requires Restart
Finds directions on Google and Yahoo Maps based on your selected text and one of various home addresses that you can store.
NewsWorthy for Thunderbird 1.5 Requires Restart
Making Thunderbird newsworthy (Usenet client support)...
Book Text Mark Requires Restart
Use context menu or Bookmarks menu to set mark lines within long pages. Navigate to marked pages and to the marked lines.
Highlight interesting sections of text, navigate between highlighted sections.
PLUGIN NO LONGER BEING MAINTAINED Requires Restart
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g15thunderbird Requires Restart
Extension for the g15 keyboard. Need g15daemon and libg15render available on http://www.g15tools.com/
Hide Badge Icon Requires Restart
Hides the badge for new messages of the Thunderbird app icon on Mac OSX.
MessageID-Finder Requires Restart
MessageID-Finder is a addon for the Mozilla mail/news-client and Thunderbird which helps you to find the message to a certain...
TipsTrade Ticket Buttons Requires Restart
This extension parses emails for TipsTrade Tickets and VRMs and creates a menu that links directly to the vehicle in the Broking Applications. Add the "Ticket" button to the email preview toolbar. Click on the button to generate tipstrade:// links
To create your own collections, you must have a Mozilla Add-ons account.