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Display Mail User Agent T Featured

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.

Rated 5 out of 5 stars (10)
5,961 users

SmartTemplate4 Requires Restart Featured

SmartTemplate⁴ 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.

Rated 5 out of 5 stars (68)
9,493 users

*cloud - FileLink for Nextcloud and ownCloud Featured

Upload large attachments to your Cloud and send the link by email

Rated 5 out of 5 stars (16)
8,071 users

FileLink provider for WebDAV Featured

Uploads your large attachments to your WebDAV account instead of sending them by email.

Rated 3 out of 5 stars (4)
6,723 users

DKIM Verifier Requires Restart Featured

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (28)
9,463 users

DeepDark for Thunderbird Requires Restart Featured

Dark mode for Thunderbird UI

Rated 5 out of 5 stars (35)
10,537 users

CardBook Featured

A new Thunderbird address book based on the CardDAV and vCard standards.

Twitter: @CardBookAddon

Rated 4 out of 5 stars (272)
57,139 users

Thunderbird Conversations Featured

This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.

Rated 4 out of 5 stars (468)
23,407 users

AutoarchiveReloaded Featured

Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)

Rated 4 out of 5 stars (12)
12,013 users

XNote++ Requires Restart Featured

Persistent sticky notes for Thunderbird associated to mails.

In TB 78, you can define the note position in the settings. If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.

Rated 5 out of 5 stars (96)
17,994 users