Thunderbird

by PeterPerlich

47 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,802 reviews

14,141,351 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Lightning by Mozilla Calendar Project

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 197 reviews

135,727 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

United States English Spellchecker by jooliaan

Rated 3 out of 5 stars 168 reviews

376,847 users

United States English Spellchecker for Firefox, Thunderbird and SeaMonkey by Kevin Atkinson and Geoff Kuenning.

To enable, right-click in a multi-line text box, select "Languages", then "English (United States)".

Spanish (Spain) Dictionary by tnarik, RickieES

Rated 4 out of 5 stars 114 reviews

230,467 users

Spanish/Spain Dictionary

German Dictionary by KaiRo

Rated 4 out of 5 stars 46 reviews

404,829 users

German Dictionary (new Orthography) for spellchecking in Mozilla products

Dizionario italiano by flod

Rated 4 out of 5 stars 52 reviews

133,738 users

Italian spellchecking dictionary

Add-on Compatibility Reporter by Mozilla

Rated 4 out of 5 stars 193 reviews

63,722 users

Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly (legacy add-ons only).

Nightly Tester Tools by Automation Development, Tony Mechelynck, others

Nightly Tester Tools (NTT) is an add-on for aiding testers of Nightly builds of Mozilla apps including Firefox.

Quicktext by WizKid, R Kent James

Rated 4 out of 5 stars 296 reviews

85,975 users

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

Signature Switch by Achim Seufert

Rated 4 out of 5 stars 189 reviews

69,055 users

Switch the signature on/off or choose a new one from your predefined set...

Mail Redirect by Pawel Krzesniak, Onno Ekker

Rated 4 out of 5 stars 125 reviews

35,555 users

Allow to redirect (a.k.a. "remail") mail messages to other recipients.

British English Dictionary by Mark Tyndall

Rated 3 out of 5 stars 404 reviews

132,138 users

British English Dictionary R1.19 for Firefox, Thunderbird and SeaMonkey by David Bartlett.

To enable, right-click in a multi-line text box, select "Languages", then "English / United Kingdom".

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 87 reviews

178,456 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Locale Switcher by bsmedberg

Rated 4 out of 5 stars 28 reviews

46,037 users

Displays a menu item for switching the application locale.
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