Extensions by Name
Quicktext Requires Restart
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.
Quitomzilla Requires Restart
Quitomzilla helps you quit smoking while you surf the web or wait for new emails, showing the cigarettes, money and time you have saved since you quit...
Quote Colors Requires Restart
Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.
QuoteCollapse Requires Restart
Collapse and expand quotes. Please see the extension homepage for further information.
Note that MozDev has shut down long ago (mailing list etc). Add-On homepage, source code and issue tracker are on GitHub, as linked on this page.
Show what I’m listening from RadioGNU
RadioGNU Protocol Requires Restart
Assists to setup a chat account for RadioGNU
Rage Hoye Requires Restart
Prevents you from sending offensive mails based on a keyword list
Rainbowpicker Requires Restart
Pick any color of the...
Random Theme Switcher Requires Restart
This extension switches your themes at random.
random(signature) Requires Restart
Updates a given signature file in regular intervals.
Re: Sort Requires Restart
Read2Me "speechify the web" Requires Restart
Webpage and email to speech extension using festival or any speech engine that can handle plain text files. This version has removed the option to use the embedded Flite-1.4 component on linux.
Readonly Attachments Requires Restart
Saves temporary files as read-only when showing attachments.
RealPrevNextButtons Requires Restart
Real previous & next buttons for message navigation.
RealPrevNextButtons for new Thunderbird versions Requires Restart
Real previous & next buttons for message navigation, updated to support Thunderbird versions through 10.x (and probably future versions). Tested with Thunderbird 9.0-10.0.2 on Ubuntu 11.10, Windows 7, Windows XP, and Mac OSX.
Received Requires Restart
Displays the "Received" header parsed with a regular expression.
Recipients Overview Requires Restart
“Who else got that mail?”
RedirectFilter Requires Restart
Redirect action in the filters.
Redmine連携 Requires Restart