Up & Coming Extensions



Change direction in compose...

Not yet rated
3 users


Context searching for everyone and URL manipulation tool for advanced users...

Rated 5 out of 5 stars (38)
399 users

Foobar Controls

Allows you to control the Foobar2000 Mp3 player from the Firefox window...

Rated 4 out of 5 stars (35)
481 users

Allow Empty Subject

Allows Thunderbird to send message without a subject.

Visit my Allow Empty Subject site for recent versions and news.

Rated 4 out of 5 stars (21)
978 users


Inserts the current date/time into a message or an input field in the browser.

Visit my Timestamp site for recent versions and news.

Rated 4 out of 5 stars (20)
753 users

World Weather

Display local weather information from around the...

Rated 1 out of 5 stars (2)
74 users

RSS Editor

Desktop RSS editor for casual editing of RSS 2.0...

Rated 4 out of 5 stars (12)
76 users

Sender Verification Anti-Phishing Extension

Protects you from phishing attacks by verifying the From: address domain name of emails as you read them. Sender Policy Framework (SPF) and DNS-based reputation lists are used.

Rated 4 out of 5 stars (20)
1,047 users


Quickfile is an extension for Mozilla Thunderbird which initially aimed to speed up filing of messages into your mail folder heirarchy but now includes features for navigation and folder creation...

Rated 4 out of 5 stars (33)
245 users


about:config for...

Rated 3 out of 5 stars (13)
1,072 users


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)
461 users


Lists installed add-ons (extensions, themes, plugins). Compatible version linked from the Developer comments section at the bottom of the addon's page.

Rated 4 out of 5 stars (30)
862 users

Text size toolbar

Adds text size buttons to the toolbar. This has now been superseded by the Zoom toolbar https://addons.mozilla.org/en-US/firefox/addon/6118

Rated 4 out of 5 stars (21)
568 users

Bork Bork Bork!

The Swedish Chef travesty filter and URL blocker. View web pages or mail as spoken by the Swedish Chef like this...

"Zee Svedeesh Cheff trefesty feelter und URL blucker. Feeoo veb peges oor meeel es spukee by zee Svedeesh Cheff leeke-a thees."

Rated 4 out of 5 stars (30)
169 users

PONG! Multiplayer

Play a game of PONG! while you are waiting.

Rated 5 out of 5 stars (7)
88 users

Display mailing list header

This extension implements RFC 2369 for Thunderbird: Special mailing list header fields in the mail are parsed, and the links are displayed in the extended header view. You can click them to simply go to the archive, request help or unsubscribe.

Rated 3 out of 5 stars (6)
440 users


MessageID-Finder is a addon for the Mozilla mail/news-client and Thunderbird which helps you to find the message to a certain...

Rated 4 out of 5 stars (10)
208 users


Translate text from English and other languages into Esperanto.

Traduku tekston de la angla kaj aliaj lingvoj al Esperanto.

Rated 5 out of 5 stars (1)
288 users

Preferential (New GUID)

Advanced preferences manager for Mozilla-based...

Rated 3 out of 5 stars (5)
119 users

Tb AutoSave Extension

You can now autosave messages from TB upon...

Rated 3 out of 5 stars (3)
80 users