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Search for Sender
Requires Restart
Adds two items to the threadpane context menu, 'Search for this sender' and 'Search for this subject'. This basically takes the sender or subject of the selected message, copies it to the QuickSearch window and starts the search.
Indian Language Transliterator
Requires Restart
Indian Language Transliterator (developed at IIIT Hyderabad, India) is a Mozilla Thunderbird Add-on, developed to enable Thunderbird users to compose and send messages in 10 Regional Indian Languages, using their regular QWERTY keyboard!!!
Valencian Spellchecker
Valencian spellchecker dictionary created by RACV and packaged for Mozilla products by llenguaitecnologia.com.
Mark All Read Button Postbox
Requires Restart
Adds a toolbar button to mark all emails as read.
Wunderlist Task Button
Requires Restart
Non-official addon for Wunderlist. Easily transform a mail into a task for Wunderlist with a single click.
Mukparasi Korean-English Dictionary File
Requires Restart
A Korean-English dictionary file for Mukparasi.
Do Not Save Password
TMS Bulk SMS
Requires Restart
Send SMS text messages directly from Thunderbird, without using a tethered phone! Integrates with Thunderbird's Address Book and allows SMS mailing lists for quick and easy bulk or individual messaging. Uses Flash Media Group's SMS service.
Mukparasi
Requires Restart
A Korean popup dictionary based on Rikaichan
Requires the additional dictionary addon.
replyTo
Requires Restart
Adds a menuitem to the Mail context Menu to Reply to a different Mailadress
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.
Trueblock Plus
Requires Restart
Trueblock Plus is a fork of the Adblock Plus extension for blocking unwanted advertisements on the web. This fork provides the exact same features as Adblock plus, with the unpopular, unwanted "acceptable ads" (non-)feature turned off by default.
Alphanumerator
Requires Restart
Convert alphanumeric phone numbers to just numbers. Simply highlight the text, right-click it, and click "Alphanumerate". For example, 1-800-PICK-UPS would be converted to...
Zhong Wen
Requires Restart
Mouse over a Chinese character to find out it's meaning. A popup will appear showing the 'Pinyin' pronunciation, the simplified character form, and the English translation. You can customize what parts to show on the preferences window.
Signature Fixer
External Email Alert
Requires Restart
Alerts user to confirm that it is ok to send an external email.
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.
LDAP - View Groups Members
Requires Restart
Allow the user to view the members of the LDAP directories in the addressbook
Identity Checker
Requires Restart
This add-on checks to sender identity when send a message.
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