Extensions by Weekly Downloads
Notify Unity of new mails in Thunderbird. Also, right click Thunderbird icon and get new quicklist items: Compose new mail and Contacts.
Based in awn-notif by Thesa aka Florian Birée
This addons gives you a dashboard-style view of your RSS feeds, like iGoogle or Netvibes (widget view). This is an experiment, so it is still very rough. Right now, consider this as a proof-of-concept rather than a real addon.
Send without subject and without confirmation alert
Hide the "Clear List" Button in the Download Manager.
NotTo allows you to exclude individuals from the recipients list.
Easily visit the site for The Cat Attack Fishing Tournament.
Automatic conversion from 'plain' attachments to zFiler links, when message is being sent.
Move mails to the same folder where previously mails have been moved from this author by hitting a single key
Customize the reminder dropdown in Sunbird and Lightning's event and task dialog.
To configure this extension, open the addon preferences from the addons manager.
Birthdays from addressbook-contacts will be added as events to Lightning...
A button to call up the Sunbird Calendar from Firefox and Thunderbird toolbars . 64 BIT operating system version!
Quickly reply to your bugmail on bugzilla.mozilla.org without leaving Thunderbird.
Open your mail attachments directly with your default gnome application.
ONLY for GNOME USERS!
Is Gnome Open still needed? Please read "Developer Comments" below.
Identifies and displays the status of pending and received notifications (DSN, MDN) for messages sent with notification requests. To get full experience with this addon, don't forget to use DSN settings and MDN extended addons too.
Allows the recipient of a message to send a return receipt (MDN: Message Disposition Notification) on message deletion. This addon is usefull for better experience with Notification Viewer addon.
Sometimes you need to select a specific SMTP server for sending the current message? Then SendVia is for you.
SendVia provides the `Send' button of message composition windows with a drop-down menu from which you can select or create the SMTP server...
Displays an icon in the system tray when new mail arrives.
Been2Long will remind you to get in touch with your contacts.