Top-Rated Extensions

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Email signature for Thunderbird - WiseStamp

Switch Thunderbird email signatures. Supports Gmail, Yahoo, AOL & Outlook webmails. Youtube, Facebook, Twitter icons & more

Rated 3 out of 5 stars (1)
3,268 users

Gif Remover No Restart

To fastest your browser to surfing internet without extension gif.

Rated 3 out of 5 stars (1)
17 users

pass-manager

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

Rated 3 out of 5 stars (1)
24 users

Signature Fixer

Fixes the Signature Stacking bug for Forwards/Replies.

Rated 2 out of 5 stars (4)
445 users

Lightning Multiweek View

Adds a multiweek view to...

Rated 2 out of 5 stars (4)
85 users

nntpthreads

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)
30 users

Wunderlist Task Button

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

Rated 2 out of 5 stars (7)
282 users

Year View

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)
13 users

mozCleaner No Restart

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

Rated 2 out of 5 stars (5)
2,206 users

Tabbed Mail Preferences

Enhances control over some aspects of tabbed mail browsing.

Rated 2 out of 5 stars (2)
5 users

PassToScript extension

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

Rated 2 out of 5 stars (2)
25 users

Boomerang

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

CALDAV - Search/Subscribe

Add CalDAV search & subscribe feature to Lightning

Rated 2 out of 5 stars (7)
2,156 users

Nightly Tester Tools Lite

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)
96 users

Purge Events

Purge events from Sunbird and Lightning calendars

Rated 2 out of 5 stars (6)
191 users

Test Pilot for Thunderbird No Restart

Add-on has now been discontinued, see below.

Rated 1 out of 5 stars (15)
9,186 users

Re: Sort

「Re2:」「Re4:」というふうに「Re:」をまとめます。

Rated 2 out of 5 stars (1)
37 users

Cairo-Dock unread messages

Displays the number of unread messages in all inboxes on your dock.

Rated 2 out of 5 stars (1)
195 users

Spoof Detector

Extension for Email Spoofing Detection

Rated 2 out of 5 stars (1)
66 users

forcebutton

This add-on can resend mails, so you "force" the other side to answer. It could be useful at corporate environment.

Rated 2 out of 5 stars (1)
63 users