Add-ons
Most Popular All »
- 1. ImportExportTools NG 246,046 users
- 2. Provider for Google Calendar 226,510 users
- 3. Manually sort folders 206,099 users
- 4. LookOut (fix version) 173,808 users
- 5. Quicktext 132,378 users
- 6. Remove Duplicate Messages 93,090 users
- 7. Send Later 92,682 users
- 8. CardBook 74,994 users
- 9. TbSync 74,881 users
- 10. Mail Merge 69,842 users
Featured Extensions See all »
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Persistent sticky notes for Thunderbird associated to mails. You can email them/print/copy to clipboard.
If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.21,535 users -
Uploads your large attachments to your WebDAV account instead of sending them by email.37,684 users -
Upload large attachments to your Cloud and send the link by email28,198 users -
A new Thunderbird address book based on the CardDAV and vCard standards.
Twitter: @CardBookAddon74,994 users -
SmartTemplates offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.6,172 users -
Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)19,715 users
Up & Coming Extensions See all »
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Displays a small graphic visualising the context (thread) of the currently selected email.3,094 users -
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.1,368 users -
This provider add-on adds Google synchronization capabilities to TbSync. Only contacts and contact groups are currently managed, using Google's People API.
Please read the "About this Add-on" section below carefully!6,373 users -
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync29,058 users -
Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).1,566 users -
This extension adds support for CalDAV & CardDAV accounts to the Thunderbird Sync manager "TbSync". Including iCloud, ownCloud, Nextcloud, Radicale and many more.49,275 users
Featured Collections See all »
To create your own collections, you must have a Mozilla Add-ons account.
