Most Popular Extensions
Allows to notify a HTTP-GET based webservice after successfully sent an email, e.g. for time registration systems.
Show xul application (gecko 1.9.2 based) in system tray. supports Firefox 3.6 / 3.7 , Thunderbird 3.1
One-click search similar to The Bat! program.
Copy Reminder List To Clipboard No Restart
Provides button to copy the list of current reminders to the clipboard.
Quickly reply to your bugmail on bugzilla.mozilla.org without leaving Thunderbird.
Hitsteps Analytics is a powerful real time website visitor manager, it allow you to view and interact with your visitors in real time.
Automatically converts top-posted messages to use bottom-positng or vice versa. Interleaved posts are left alone. Detects automatically added text and supports a per-contact list of exceptions.
Add syntax highlighting of code in various languages to email messages via context menu.
Creates Mutt like key bindings for Thunderbird. Inspired by the mouseless extension.
If you work in front of a computer and send a lot of SMS text messages this is for you. Finally you can send SMS from the privacy of your Mozilla application. The focus of this addon is on efficiency, ease of use and easy access to advanced SMS featu...
A 'Run Filters on Folder' toolbar button. Based on http://developer.mozilla.org/en/docs/Custom_Toolbar_But...
ClickGuard No Restart
Prevent accidental interaction with tab contents
gTimer предназначен для подсчёта времени, проводимого за работой в Firefox.
Applies mail filters to sub folders of an IMAP account, not just the Inbox
Close active tab by double-clicking it.
Adhiyan is a tool to convert and view TSCII/TUNE/TAB/TAM/DailyThanthi/Dinamani/Chenet/Kambar encoded Tamil content to UNICODE Tamil.
Thunderbird HTML editor. This add-on adds a HTML tab to the composition window where you can see and edit the HTML source of the message.
An extension to manage attachments across multiple emails.