Extensions by Name

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QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (203)
14,651 users

QuickPasswords Requires Restart

Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.

Now also includes SSO change (multi-domain pw) and Backup + Restore.

Rated 5 out of 5 stars (51)
2,853 users

Quicktext Requires Restart

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

Rated 4 out of 5 stars (315)
86,034 users

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...

Rated 5 out of 5 stars (18)
145 users

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.

Rated 4 out of 5 stars (47)
5,016 users

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.

Rated 4 out of 5 stars (27)
5,187 users

RadioGNU Now Playing

Show what I’m listening from RadioGNU

Not yet rated
0 users

RadioGNU Protocol Requires Restart

Assists to setup a chat account for RadioGNU

Not yet rated
0 users

Rage Hoye Requires Restart

Prevents you from sending offensive mails based on a keyword list

Not yet rated
1 user

Rainbowpicker Requires Restart

Pick any color of the...

Rated 4 out of 5 stars (17)
311 users

Random Theme Switcher Requires Restart

This extension switches your themes at random.

Rated 4 out of 5 stars (7)
16 users

random(signature) Requires Restart

Updates a given signature file in regular intervals.

Rated 4 out of 5 stars (41)
283 users

Re: Sort Requires Restart

「Re2:」「Re4:」というふうに「Re:」をまとめます。

Rated 3 out of 5 stars (2)
32 users

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.

Rated 5 out of 5 stars (3)
1 user

Readonly Attachments Requires Restart

Saves temporary files as read-only when showing attachments.

Rated 3 out of 5 stars (2)
1 user

RealPrevNextButtons Requires Restart

Real previous & next buttons for message navigation.

Rated 4 out of 5 stars (32)
37 users

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.

Rated 4 out of 5 stars (8)
250 users

Received Requires Restart

Displays the "Received" header parsed with a regular expression.

Rated 5 out of 5 stars (2)
46 users

Recipients Overview Requires Restart

“Who else got that mail?”

Rated 3 out of 5 stars (10)
9 users

RedirectFilter Requires Restart

Redirect action in the filters.

Rated 4 out of 5 stars (14)
2,063 users