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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
White Screen
Use white screen test to detect dead pixels, stuck pixels, and other display defects.
Black Screen
Use black screen test to detect dead pixels, stuck pixels, and other display defects.
ProtonMail Encryption Status
When using ProtonMail Bridge to integrate Mozilla Thunderbird withProtonMail, it's not easy to tell which emails were end-to-end (E2E) encrypted. This add-on puts an icon in the toolbar above every message to show you its encryption status.
cb_thunderlink
cb_thunderlink is a thunderlink replacement.
Clickable, durable links to specific messages inside Thunderbird.
Changelogger
Real sender of italian PEC
Shows real sender of italian certified emails (PEC) into the table that lists emails.
Český slovník pro kontrolu pravopisu (CC0)
Experimentální český slovník pro kontrolu pravopisu.
WhatsApp Web in Thunderbird
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.
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.
Mongolian Spellchecking Dictionary
Articles Toolbar
Disable DragAndDrop (New)
Disable drag and drop on the folder tree in order to prevent unintended folder movement.
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.
InsertSignature
Insert signature helps you to insert usually used text by your customization.
Pywalfox
Dynamic theming of Thunderbird using your Pywal colors.
https://github.com/Frewacom/pywalfox
To create your own collections, you must have a Mozilla Add-ons account.
