Most Popular Extensions
Provides button to copy the list of current reminders to the clipboard.
gTimer Requires Restart
gTimer предназначен для подсчёта времени, проводимого за работой в Firefox.
After Unsent Mail Is Sent Requires Restart
Run a program of your choice after unsent mail has been sent.
Random Theme Switcher Requires Restart
This extension switches your themes at random.
Nightly Tester Tools Lite Requires Restart
This is a cut down version of Nightly Tester Tools by Mossop, which is 77.6 KB. I've only included the "copy build id" and "build id in titlebar"...
Seturgent Requires Restart
Sets the urgent flag (X11) of the Thunderbird window under Linux in case of new messages. Does ignore special folders like Drafts, Junk and such.
Resubmit Requires Restart
(Re)submit multiple messages to a predefined recipient(s)
Limit_Offline_Message_Size Button Requires Restart
Limit the size of a message to download with a single click of the button for slow (and/or expensive) network connection.
Quick access to Tools->Account Settings->Disc Space->"To save disk space, do not download: Messages larger than XXkB"
SendToSecondEmail Requires Restart
This Extension lets you send Mails to both, first and second email address...
Last Message Requires Restart
Navigate the folder to the last message in the moment the folder is opened.
PasteIP Requires Restart
Easy pasting of your IP address or User-Agent in a textbox. Comes in handy when posting on forums, etc.
EuropeanMX Spam Reporter Requires Restart
Train your EuropeanMX filter by reporting unrecognized spam or false-positives back to us.
Lowercase Email Addresses in Message Headers Requires Restart
Shows lowercase email addresses in message headers and their tooltips.
Mail Sent Notifier Requires Restart
Allows to notify a HTTP-GET based webservice after successfully sent an email, e.g. for time registration systems.
nowebsearch Requires Restart
Removes web search feature
Workspace for Thunderbird Requires Restart
A simple editor for executing snippets of JS. In Thunderbird.
AWN Unread Count Requires Restart
Displays the number of unread messages in the Thunderbird AWN dock icon.
Bugzilla Helper Requires Restart
Quickly reply to your bugmail on bugzilla.mozilla.org without leaving Thunderbird.
Mutt Keys Requires Restart
Creates Mutt like key bindings for Thunderbird. Inspired by the mouseless extension.
Run Filters on Folder button Requires Restart
A 'Run Filters on Folder' toolbar button. Based on http://developer.mozilla.org/en/docs/Custom_Toolbar_But...