Top-Rated Extensions

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DHS Facebook Unblock Requires Restart

Plugin to get around the Washtenaw County Facebook block.

Rated 3 out of 5 stars (1)
62 gebruikers

StickyCharset Requires Restart

Allows persistent charset changes on individual messages. For use with messages that have erroneous charset header...

Rated 3 out of 5 stars (1)
30 gebruikers

WebChanges Requires Restart

Monitor website changes for all websites not providing feeds.

Rated 3 out of 5 stars (1)
23 gebruikers

Website Blocker Requires Restart

Block websites you don't want the browser to get into.
Block by a whole domain name or a specific address.
Block until further notice or until a certain date.

Rated 2 out of 5 stars (11)
9 271 gebruikers

Nokia Synchronization Requires Restart

Synchronize Thunderbird and Nokia phone...

Rated 2 out of 5 stars (43)
348 gebruikers


Automatically apply settings recommended by security and privacy experts.

Rated 3 out of 5 stars (1)
731 gebruikers

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)
319 gebruikers

CardDAV Browser Requires Restart

A utility to browse vCards stored on a CardDAV server.

Rated 3 out of 5 stars (1)
770 gebruikers

Expertspam Requires Restart

Report spam, false-positives or phishing back to your antispam provider.

Rated 3 out of 5 stars (1)
184 gebruikers

Gif Remover

To fastest your browser to surfing internet without extension gif.

Rated 3 out of 5 stars (1)
26 gebruikers

pass-manager Requires Restart

Replace integrated password managers storage with zx2c4's pass (

Rated 3 out of 5 stars (1)
44 gebruikers

Signature Fixer Requires Restart

Fixes the Signature Stacking bug for Forwards/Replies.

Rated 2 out of 5 stars (4)
372 gebruikers

Lightning Multiweek View Requires Restart

Adds a multiweek view to...

Rated 2 out of 5 stars (4)
63 gebruikers

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)
25 gebruikers


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

Rated 2 out of 5 stars (6)
1 988 gebruikers

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 gebruikers

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)
274 gebruikers

Tabbed Mail Preferences Requires Restart

Enhances control over some aspects of tabbed mail browsing.

Rated 2 out of 5 stars (2)
5 gebruikers

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)
21 gebruikers

Boomerang Requires Restart

Boomerang E-Mail ist ein Plugin für den Thunderbird E-Mail-Client und basiert auf dem Boomerang e-Mail Algorithmus (patent pending).

Es stellt Funktionalitäten bereit, um eine beliebige e-Mail (inklusive Anhänge) der Reihe nach zu mehreren Empfänger...

Rated 2 out of 5 stars (6)
2 gebruikers