Add-ons
Miscellaneous
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FileLink provider for WebDAV
Uploads your large attachments to your WebDAV account instead of sending them by email.
41,031 users -
Display Mail User Agent T
Add-on for Thunderbird that displays information about the mail user agent (i.e. email software) with which the selected mail was composed.
9,905 users
Most Popular See all »
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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.148,767 users -
Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.97,733 users -
Uploads your large attachments to your WebDAV account instead of sending them by email.41,031 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.18,919 users -
Unofficial DeepL translate extension for Thunderbird.12,932 users -
List addons in Windows' "Add or Remove Programs".11,732 users
Top Rated See all »
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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.5 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.38 users
Recently Added See all »
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Convert betting odds between decimal, fractional and American, see the chance each price implies, and work out the bookmaker margin and fair odds for a two-way market. Works offline, sends no data.0 users
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Display Thunderbird keyboard shortcuts in a context-aware popup. This addon shows the most relevant shortcuts based on your current screen (Mail, Calendar, Address Book, or Tasks).3 users -
After you click Send, the message waits a moment (10 seconds by default, adjustable up to a minute) so you can still cancel it – just like Undo Send in Apple Mail.24 users -
Right-click any page and Header Peek reads back the response headers that matter: HSTS, CSP, X-Frame-Options, Referrer-Policy, and what is missing. Evidence first, for the software you trust with your data.1 user
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Track any product page's price and Price Watch stores it as your baseline, then pings you the moment the page shows a real drop. Built for buy-it-for-life shopping, where the right piece at the right price is worth waiting for.0 users
See all 506 extensions in Miscellaneous »
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