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AddAccents

This extension allows you to easily insert accented characters as you type in firefox or thunderbird. It is similar to abctajpu (no longer supported). With the default settings, simply press "e" followed by "\" to insert "é" "a\" to insert "à" etc...

Rated 5 out of 5 stars (3)

174 users

Check Time

メール送信時、勤務時間内かどうかを確認します。

Not yet rated

2 users

Reply with subaddress

Reply to a message that was sent to a subaddess with the same address.

Example: Your primary email is tim@mymail.tld, you receive a mail to the subaddress tim+mailinglists@mymail.tld, the sender of replies is set to tim+mailinglists@mymail.tld.

Rated 3 out of 5 stars (3)

64 users

Textmarker

Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)

Rated 5 out of 5 stars (33)

38,434 users

CT Cornish Spell-Checker - SWF

This is a spell-checker for the Cornish language in the Standard Written Form.

Not yet rated

5 users

DMS HEADERS EXTRACTOR

An extension that help you to extract any header parameter of emails that exist in any selected folder or account or just all the accounts on your thunderbird by only precising it in the popup input

Rated 5 out of 5 stars (1)

42 users

Multimonth view

Multimonth View allows users to display multiple months in a single calendar view,

Rated 3 out of 5 stars (6)

27 users

Allday Tasks

Thunderbird lacks the ability to create and manage allday tasks. This add-on adds these capabilities.

Rated 5 out of 5 stars (2)

215 users

addy.io - Easy Reach

An extension for Thunderbird that allows you to access addy.io.

Not yet rated

1 user

Latgalīšu volūdys pareizraksteibys vuordineica

Biblioteka latgalīšu volūdys pareizraksteiys puorbaudei Firefox, Thunderbird, Seamonkey, Fennec

Not yet rated

1 user

Chichewa Spell Check

This is a real time Chichewa Spell Checker (Malawi) supported on Firefox, Thunderbird, and Seamonkey.

Not yet rated

5 users

Tibetan Spellchecker

Tibetan (bo) spellchecker at syllable level (not composed words).

Not yet rated

1 user

Dictionary of Spanish / Nicaragua

Dictionary of Terms of Nicaragua, Spanish dictionary based internaconal, adding support on behalf of cities and fruits, animals, plants, references, local echos and terms accepted by RAE.

Not yet rated

28 users

Venetan

Venetan spellchecker for Firefox, Thunderbird, and SeaMonkey using the spelling of Mauro Trevisan.

To enable, right-click in a multi-line text box, select "Check Spelling", then select "Languages" and then "venetan".

Not yet rated

20 users

Tagalog/Filipino Dictionary

A Tagalog/Filipino Dictionary (tl) for Pale Moon, Firefox, Thunderbird, and SeaMonkey.

Not yet rated

1 user

Spanish (Mexico) Dictionary

Spanish (Mexico) spell checker dictionary

Rated 5 out of 5 stars (1)

7,293 users

Thunderbird Addons Test Requires Restart

This addon is completely defunct and merely for internal testing purposes. Don't expect it to do anything.

Rated 1 out of 5 stars (1)

0 users

KeepRunning

Once you close Thunderbird you will no longer be able to see your new emails. This plugin keeps Thunderbird active in the background, meaning you can still receive your new emails after closing the app. Use this when the app is in the startup.

Rated 5 out of 5 stars (6)

1,630 users

Unsubscribe

Lightweight solution to simplify unsubscribing from newsletters

Rated 3 out of 5 stars (16)

1,866 users

Minimize on Close

Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.

Rated 4 out of 5 stars (86)

40,561 users