Newest Extensions
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Quick Locale Switcher Requires Restart
Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.
CuteMenus - Crystal SVG Requires Restart
Note from Mozilla: This add-on has been discontinued. Try Menu Icons Plus instead.
Adds icons to all menus along with some other features...
Grocery List Generator Requires Restart
The GLG (Grocery List Generator) is a helpful little tool to store your recipe-ingredients and other groceries you need regularly. It creates a well-organized grocery list to help make your grocery shopping as easy as possible.
Xpunge
Empties the Trash and Junk folders, and compacts folders in multiple Thunderbird accounts.
Address book synchronizer between Memotoo.com and Thunderbird Requires Restart
Synchronize your address book between Mozilla Thunderbird and Memotoo.com !...
Correct Identity
Ever sent mail from the wrong email address because you forgot to select the correct identity?
ReminderFox Requires Restart
ReminderFox displays and manages lists of reminders and tasks. ReminderFox uses easy-to-use lists with warnings/alarms to remind you of all your important appointments.
Synchronize ReminderFox with other calendars as well.
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.
MR Tech Toggle Preview Pane Requires Restart
Adds a Toggle Preview Pane button to the...
FlatStyle for Thunderbird Requires Restart
This gives you a style similar to MS Office XP in your Thunderbird menus and toolbars, and Calendar as well if you have that installed. It also changes the category-selector in the options window to use your system colors, instead of always being...
Notary Requires Restart
Adds a notes pane to the message view. Any text typed is stored against the message for later review. Very simple interface. Based on msgNotes By Frank DiLecce. I did not like being restricted to a single line nor having to hit buttons or menus...
Remove Duplicate Messages Requires Restart
If you have duplicate messages (e.g. from merging folders or downloading messages several times) you can use this tool to find and remove them from the selected folder and its subfolder by rightclicking on a folder and choosing "Remove duplicates..."
StickyCharset Requires Restart
Allows persistent charset changes on individual messages. For use with messages that have erroneous charset header...
Track Package Requires Restart
Track Packages from the right-click menu...
nntpthreads Requires Restart
Nntpthreads lets you add up to four new buttons in the toolbar to easily access the menu item from "View > Threads"...
SMSalias MozClient Requires Restart
SMSalias is a Firefox/Thunferbird extension that enables you to send SMS messages directly from Browser/email application...
Transliterator
As-you-type phonetic conversion of text from one alphabet to another, as well as transliteration/detransliteration of selected text anywhere within documents. Supports multiple languages and custom transliteration schemes.
Display Quota Requires Restart
This extension will display the current status of your IMAP quota in thunderbird's statusbar and will warn you when you reach a configurable limit...
To create your own collections, you must have a Mozilla Add-ons account.