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NestedQuote Remover
Single Domain
Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.
Toggle Headers
Allows to switch between the normal header view and viewing all headers when viewing a message by using a keyboard shortcut (Ctrl+H).
Expertspam
Received
filemail
Move mails to the same folder where previously mails have been moved from this author by hitting a single key
RemindIt
Help in reminding mails to be answer or sent again. Choose a reminder date for each received or send message that are highlighted in the message list, depending on their status (expired, soon to exprire, to be reminded). Sending a reminder is eased.
Mail Sent Notifier
Allows to notify a HTTP-GET based webservice after successfully sent an email, e.g. for time registration systems.
URL Link
URL Link is a small Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.
Open With
Open With can open your web links in any browser installed on your computer.
*Open With is no longer maintained.*
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.
Mark GMail Read
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
EagleCloud Extension
Works along with EagleCloud Information Security product to secure sensitive information based on company policy.
Safelinks Cleanup
Cleans up Outlook’s “safelinks” tracking.
Minimal code to allow for easy auditing of the add-on. The only code is:
https://github.com/Cimbali/safelinks-cleanup/blob/main/src/background.js
Dysclusif
Signature sync for Gmail
This extension allows you to automatically use your signature from Gmail accounts in Thunderbird. No longer need to maintain two separated signatures!
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.
Next Unread Group (Mark All Read)
Adds a Group button, marks current newsgroup or folder as read and moves to the next unread message
To create your own collections, you must have a Mozilla Add-ons account.
