Top-Rated Extensions

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Nokia Synchronization Requires Restart

Synchronize Thunderbird and Nokia phone...

Rated 2 out of 5 stars (43)
366 users

PrivaConf

Automatically apply settings recommended by security and privacy experts.

Rated 3 out of 5 stars (1)
955 users

Sieve Out of Office New Requires Restart

A Thunderbird plugin to allow one to set out of office messages and / or redirect emails to colleagues via a easy to use pop-up dialog.

This Out of Office plugin requires that your POP3 / IMAP server also have a sieve service.

Rated 3 out of 5 stars (1)
336 users

CardDAV Browser Requires Restart

A utility to browse vCards stored on a CardDAV server.

Rated 3 out of 5 stars (1)
757 users

Gif Remover

To fastest your browser to surfing internet without extension gif.

Rated 3 out of 5 stars (1)
22 users

pass-manager Requires Restart

Replace integrated password managers storage with zx2c4's pass (www.passwordstore.org)

Rated 3 out of 5 stars (1)
50 users

Signature Fixer Requires Restart

Fixes the Signature Stacking bug for Forwards/Replies.

Rated 2 out of 5 stars (4)
399 users

Lightning Multiweek View Requires Restart

Adds a multiweek view to...

Rated 2 out of 5 stars (4)
69 users

nntpthreads Requires Restart

Nntpthreads lets you add up to four new buttons in the toolbar to easily access the menu item from "View > Threads"...

Rated 2 out of 5 stars (4)
26 users

mozCleaner

Cleans your Firefox, Thunderbird, SeaMonkey, Fennec (unstable), Instantbird and BlueGriffon.

Rated 2 out of 5 stars (6)
1,826 users

Year View Requires Restart

This is an example extension that adds a simple year view to Sunbird/Lightning.

Note that freebusy information is only provided if all calendars are cached. See long description for more info. Also, Calendar 1.0pre with bug 489590 fixed is required.

Rated 2 out of 5 stars (5)
12 users

Wunderlist Task Button Requires Restart

Non-official addon for Wunderlist. Easily transform a mail into a task for Wunderlist with a single click.

Rated 2 out of 5 stars (8)
289 users

Tabbed Mail Preferences Requires Restart

Enhances control over some aspects of tabbed mail browsing.

Rated 2 out of 5 stars (2)
5 users

PassToScript extension Requires Restart

Extension to pass e-mail in eml (raw) format directly to the script specified

Rated 2 out of 5 stars (2)
23 users

Boomerang Requires Restart

Boomerang E-Mail is an Add-on for the Thunderbird E-Mail-Client and is based on the Boomerang e-Mail algorithm (patent pending).

It provides functionality to send a certain e-mail (including attachments) to several recipients one after the other and...

Rated 2 out of 5 stars (6)
3 users

Nightly Tester Tools Lite Requires Restart

This is a cut down version of Nightly Tester Tools by Mossop, which is 77.6 KB. I've only included the "copy build id" and "build id in titlebar"...

Rated 2 out of 5 stars (8)
59 users

CALDAV - Search/Subscribe Requires Restart

Add CalDAV search & subscribe feature to Lightning

Rated 2 out of 5 stars (8)
2,232 users

Purge Events Requires Restart

Purge events from Sunbird and Lightning calendars

Rated 2 out of 5 stars (6)
162 users

Test Pilot for Thunderbird

Add-on has now been discontinued, see below.

Rated 1 out of 5 stars (15)
9,759 users

Re: Sort Requires Restart

「Re2:」「Re4:」というふうに「Re:」をまとめます。

Rated 2 out of 5 stars (1)
34 users