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Night and Day Dynamic

A theme that switches between sun and moon based on time of day.

This is the canonical example dynamic theme published by Mozilla: https://github.com/mdn/webextensions-examples/tree/master/dynamic-theme

Rated 3 out of 5 stars (2)
1,218 users

White Screen

Use white screen test to detect dead pixels, stuck pixels, and other display defects.

Not yet rated
11 users

Black Screen

Use black screen test to detect dead pixels, stuck pixels, and other display defects.

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30 users

cb_thunderlink

cb_thunderlink is a thunderlink replacement.
Clickable, durable links to specific messages inside Thunderbird.

Rated 5 out of 5 stars (6)
253 users

Lojban spell check dictionary

Spell check dictionary for Lojban.

Not yet rated
2 users

Changelogger

Gets changelogs for updated addons

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32 users

Český slovník pro kontrolu pravopisu (CC0)

Experimentální český slovník pro kontrolu pravopisu.

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3,638 users

English (US) Dictionary

This add-on repackages the en-US dictionary available in mozilla-central, which uses the normal (size 60) word list by SCOWL and integrates it with over 6 thousand words.

Rated 5 out of 5 stars (1)
6,274 users

Open Google Voice

Opens Google Voice In A New Thunderbird Tab

Rated 4 out of 5 stars (3)
147 users

Mongolian Spellchecking Dictionary

Mongolian Spellchecking Dictionary

Not yet rated
10 users

Clacks Overhead

In tribute to the late Sir Terry Pratchett, many users are adding the message "GNU Terry Pratchett" into the email header "X-Clacks-Overhead". Clacks Overhead shows users when this appears in their emails and displays the message included.

Rated 5 out of 5 stars (1)
37 users

Articles Toolbar

Adds the Articles toolbar

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19 users

Real sender of italian PEC

Shows real sender of italian certified emails (PEC) into the table that lists emails.

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2 users

WhatsApp Web in Thunderbird

Open WhatsApp Web in Thunderbird

Rated 4 out of 5 stars (18)
3,818 users

Disable DragAndDrop (New)

Disable drag and drop on the folder tree in order to prevent unintended folder movement.

Rated 5 out of 5 stars (19)
3,090 users

takikupu

A Māori spellchecker

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1 user

SPAMBEE

Report any unsollicited email (SPAM, Phishing, ...) to SPAMBEE.
Get an alert if you open an email containing a URL already known as fraudulent.
All reports are anonymized, no registration is required.

Rated 4 out of 5 stars (6)
876 users

Snakes by Bluemods

Classic Snakes game at your fingertips.

Snakes by Bluemods is a free-to-play single-player classics arcade game designed and developed by Justin Gates at Bluemods.com. The game allows the players to maneuver a snake made up of tiny squares.

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25 users

Dictionnaire occitan gascon

Corrector ortografic en occitan gascon entà Thunderbird.
Correcteur orthographique en occitan gascon pour Thunderbird.

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6 users