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thunderbird-addon

This Thunderbird Add-On makes it easy to send large attachments: It uploads the files to a Nextcloud or ownCloud instance and inserts download links into the message.

Install via Thunderbird Add-ons

Notify on This Folder Not That Folder: A Thunderbird Extension allowing you to choose which accounts and folders to get notifications for. Also allows setting different sounds for each account.

Thunderbird Add-on. Add webpages to the Thunderbird spaces toolbar. https://addons.thunderbird.net/en-US/thunderbird/addon/spaceapper/

Thunderbird web extension that opens WhatsApp Web in a Thunderbird Tab

Thunderbird Add-on to open Google chat in a new tab - https://addons.thunderbird.net/en-US/thunderbird/addon/google-chat-tab/

Add-on for Thunderbird that automatically populates contact photos with their Libravatar or Gravatar photo.

Track Packages from the right-click menu.

Export your extensions!

Insert an About button for each add-on into the Add-ons list.

GCalTab is a Thunderbird add-on that opens Google Calendar website in a Thunderbird tab. It facilitates multiple accounts management and features a beautiful dark mode thanks to the DarkReader algorithm.

A fork of "markdown-here-revival", a Thunderbird markdown renderer and syntax highlighter, just with another set of icons.

A fork of CardBook, a Thunderbird CardDAV and vCard address book, just with a more streamlined main icon.

Thunderbird web extension that opens Telegram Web in a Thunderbird Tab