Thunderbird

by PeterPerlich

48 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,299 reviews

18,672,986 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.

United States English Spellchecker by jooliaan

Rated 4 out of 5 stars 143 reviews

527,154 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)".

German Dictionary by KaiRo

Rated 4 out of 5 stars 54 reviews

520,161 users

German Dictionary (new Orthography) for spellchecking in Mozilla products

Spanish (Spain) Dictionary by tnarik, RickieES

Rated 4 out of 5 stars 103 reviews

272,758 users

Spanish/Spain Dictionary

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 159 reviews

150,056 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Dizionario italiano by flod

Rated 4 out of 5 stars 46 reviews

145,014 users

Italian spellchecking dictionary

Quick Locale Switcher by ppclick

Rated 4 out of 5 stars 69 reviews

322,620 users

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

Add-on Compatibility Reporter by Mozilla

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.

Extra Folder Columns by Joey Minta, Standard8

Rated 4 out of 5 stars 168 reviews

203,727 users

This extension is for those TB3 users who want the multiple-columns view that TB2 allowed

Menu Editor by Devon Jensen, Nickolay Ponomarev

Rated 4 out of 5 stars 586 reviews

190,712 users

Customize application menus:

Rearrange or remove menuitems from the main context menu (right-click menu) and main menubar (File Edit View etc.)

British English Dictionary by Mark Tyndall

Rated 3 out of 5 stars 397 reviews

365,908 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".

Signature Switch by Achim Seufert

Rated 4 out of 5 stars 143 reviews

89,858 users

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

Locale Switcher by bsmedberg

Rated 4 out of 5 stars 22 reviews

27,220 users

Displays a menu item for switching the application locale.

Quicktext by WizKid

Rated 5 out of 5 stars 220 reviews

73,216 users

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