Add-ons
Miscellaneous
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Display Mail User Agent T
Displays the mail program with which the selected mail was written
*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.11.566 users -
FileLink provider for WebDAV
Uploads your large attachments to your WebDAV account instead of sending them by email.
46.476 users
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Provider for Google Calendar connects Thunderbird with Google Calendar for full task sync, conference details, and scheduling support. It offers deeper integration than Thunderbird’s native support using Google’s official API.177.326 users -
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.119.195 users -
Uploads your large attachments to your WebDAV account instead of sending them by email.46.476 users -
Adds many new mail filter actions - launch a file, suppress notification, remove star or tag, mark replied or unread, copy as "read", append text to subject.19.077 users -
DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.12.881 users
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Permits selective enabling and disabling of search indexing on folders or accounts - with inheritence. Also adds three columns to the Thunderbird message pane that are useful in debugging.9 users
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If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.61 users
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Find, select & drag words from your emails. Solve tech-themed puzzles. 21 puzzles, 3 levels, email-only input validation & more to discover. Perfect for Thunderbird users who like productivity & ..fun?
Made by Michael 'ThunderBard' Ellis.1 user -
AI-powered email search and question answering for Thunderbird. Search your emails with natural language questions. Use a ? to ask questions, otherwise it will default to search by keyword sorted most recent first.
Requires an OpenAI API key!1 user -
The Thunderbird add-on Whois/RDAP Lookup lets you check a sender’s domain with one click: view the owner, registration, and NS servers, and quickly audit domains. It automatically updates the domain suffix list and supports 9 languages.23 users -
WebExtension implementation of the original add-on by Fabrice Desré and Colin Guthrie.
This replaces earlier releases by the original authors and a "fixed version" which existed for Thunderbird 68–73.3 users -
Track the top 5 cryptocurrencies in real-time powered by simul8or5 users -
A Thunderbird add-on designed to help navigate through folders containing new emails received using keyboard shortcuts and a menu (newly received emails, emails whose subject has not been viewed).
Made in collaboration with Grisous.12 users
See all 477 extensions in Miscellaneous »
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