DeepDark for Thunderbird Requires Restart Featured
Dark mode for Thunderbird UI
Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)
DKIM Verifier Requires Restart Featured
Verifies the DKIM-Signature of an e-mail.
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.
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.
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.
Upload large attachments to your Cloud and send the link by email
XNote++ Requires Restart Featured
Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.
FileLink provider for WebDAV Featured
Uploads your large attachments to your WebDAV account instead of sending them by email.