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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.
CantoFish
Requires Restart
CantoFish is a popup Cantonese-English dictionary for Firefox. It contains over 200,000 entries and works with both traditional and simplified Chinese characters. The Yale and Jyutping romanization systems are supported, as well as Mandarin pinyin.
Splash! (Compatibility Update)
Requires Restart
Adds a splash screen. Supported in Firefox, Flock, Thunderbird, Sunbird, eMusic Remote, Songbird and Sunbird.
arXiv
Requires Restart
Adds direct links to the article PDF and BibTeX information to arXiv email listings. BibTeX information can be used in reference managers such as JabRef by Copy & Paste.
Requires Restart
FTN-style message quoter (like GoldEd) & so on
about:support
Requires Restart
A Mozilla Messaging addon to assist in product support.
ThunderRetract
Requires Restart
ThunderRetract implements client-side eMail retraction into Thunderbird. This is done showing messages differences in original and retracted one.
EzStylist
Requires Restart
Allows including CSS when composing e-mails.
Markov Dictionary Switcher
Requires Restart
Based on Dictionary Switcher but more than a thousand times faster and you can choose dictionaries that you want to use. Detects the language of the message that you are composing and changes the spelling dictionary.
JSON Calendar Provider
Requires Restart
JSON based calendar Provider - designed to make writing backends for calendars trivial
Been2Long
Requires Restart
Been2Long will remind you to get in touch with your contacts.
FG Printers
Requires Restart
This extension allows you to modify the printing output of Mozilla Calendar. You can change the font, font-sizes and display of colors. Plus category colors are actually printed and end date calculation now works!
A Better S/MIME GUI
Requires Restart
Provides a better S/MIME GUI for Thunderbird.
Menu Editor II
Requires Restart
Hides or moves menus and menu items. (Deprecated version, see below.)
Avans Imap-account setup
Colorify Unread Watched NNTP
Requires Restart
Colorizes names of newsgroups that have watched threads with unread messages.
TamilVisai (TamilKey)
Requires Restart
A utility for typing in Tamil language. It will be ideal for Tamil bloggers...
Navigation Shortcuts
Requires Restart
This extension adds three shortcuts to Thunderbird to navigate more easily.
These shortcuts are: Focus message pane, go one folder up and go one folder down
Foobar Controls
Requires Restart
Allows you to control the Foobar2000 Mp3 player from the Firefox window...
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