Recently Updated Extensions
Personasizer allows you to expose more of your persona's header image. Useful for personas that have text or an important part of their content cut off by the browser's navigation elements.
BorderColors Requires Restart
Color-codes compose windows depending the active e-mail identity, to avoid sending messages from the wrong account.
notto Requires Restart
Do not send mail to the addresses found into notTo field.
EMail Address Crawler Requires Restart
Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.
SendVia Requires Restart
Sometimes you need to select a specific SMTP server for sending the current message? Then SendVia is for you.
SendVia provides the `Send' button of message composition windows with a drop-down menu from which you can select or create the SMTP server...
Flat Folder Tree Requires Restart
Selectively breakout or promote sub-folders under an intermediate folder in the folder tree. Use with IMAP servers where some folders remain collapsed under special namespace like [Gmail] or the INBOX itself.
MailClassifier Requires Restart
The mailclassifier extension helps you to move the email in the right folder, it uses multi-level bayesian filtering...
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!!!
External Email Alert Requires Restart
Alerts user to confirm that it is ok to send an external email.
parolu Requires Restart
Parolu enables Firefox to do speech synthesis of web pages written in Esperanto, useful for the blind (mainmenu.parolu) and for language learners (contextmenu.parolu). You'll need to install MBROLA on your machine first. https://lingvo.org/parolu
THUNDER!Box Requires Restart
Thunder!Box allows transferring contacts from your Thunderbird-Addressbook to the phonebook of a connected AVM FRITZ!Box FON router and back. You may also use your addressbook to initiate calls.
eMarks Requires Restart
Email Bookmarks are here ! ... eMark your important emails.
Do you have an email that will need to revisit/attend later on ? Would you like to keep it handy and get it with a simple click ? Bookmark your important emails with the eMarks addon.
accountex Requires Restart
Export/Import Account Settings.....
AddressBook In Mode ToolBar Requires Restart
Add adressbook button to "mode toolbar" (requires lightning extention)
ThunderCal Requires Restart
ThunderCal simply gives you a toolbar button that you can use to run Google Calendar inside Thunderbird. Inspired by the ThunderWave add-on.
Color Source Requires Restart
Add syntax highlighting of code in various languages to email messages via context menu.
MarkSubfolders Requires Restart
This Add-on provide ability to mark as read subfolders.
SmartTemplate Requires Restart
This Add-on provides the smart and simple templates and abilities to customize the quote header flexibly.
Templates can be inserted automatically at the new/repling/forwarding message. A different template can be used respectively per account.
xultray for gecko 1.9.2 Requires Restart
Show xul application (gecko 1.9.2 based) in system tray. supports Firefox 3.6 / 3.7 , Thunderbird 3.1
Thunderbird Message Filter Import/Export Requires Restart
Thunderbird Message Filter Import/Export is a thunderbird/mozilla extension to import/export message filters.