Up & Coming Extensions
Lightning Colors Reminder Requires Restart
Let's show the calendar color on Lightning reminders!
EditEmailSubject (Edit email Subject) Requires Restart
This module allows you to change/edit email subjects
Edit Email Subject Requires Restart
Edit Email Subject for Thunderbird
Upload large attachments to your Cloud and send the link by email
DeepDark for Thunderbird Requires Restart
Dark mode for Thunderbird UI
ReplyWithHeader Requires Restart
Outlook style headers and few goodies for Thunderbird & Postbox.
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.
Uploads your large attachments to your WebDAV account instead of sending them by email.
Auto Address Cleaner T Requires Restart
Remove comment, display name from addresses before sending mail.
This add-on is a fork of Auto Address Cleaner.
Lightbird Requires Restart
Standalone calendar UI for Lightning
Remove Duplicates Requires Restart
Removes duplicate messages
Uploads your large attachments to your Box instead of sending them by email.
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.
Reinstates the extensions.checkCompatibility preference without respect to the current application version.
Display Mail User Agent T Requires Restart
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.
Address Move Button Requires Restart
Allow you to add a Address Move Button to mail compose window.
Minimize on Close Requires Restart
Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.
Join-NG Requires Restart
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird
Confirm-Address Requires Restart
Confirm E-mail address before sending mail