Most Popular Extensions
Hide Clear List Button Requires Restart
Hide the "Clear List" Button in the Download Manager.
Mail Size Report Requires Restart
Report current size of mail with attachment files in status bar
Copy Link Name for Thunderbird Requires Restart
It's like Copy Link Name for Firefox but for Thunderbird!
Alphanumerator Requires Restart
Convert alphanumeric phone numbers to just numbers. Simply highlight the text, right-click it, and click "Alphanumerate". For example, 1-800-PICK-UPS would be converted to...
Reject Button 1.0 Requires Restart
Annoyed by receiving mails with missing or wrong subjects or meaningless message bodies? Simply reject them with the Reject Button Add-On and enforce proper e-mail etiquette at the cost of just a few friendships.
SS Ancestry Quick Button Requires Restart
A quick button link to the website, ssancestry.comyr.com/.
Status-Bar Custom Buttons Requires Restart
Create your own status-bar buttons.
Received Requires Restart
Displays the "Received" header parsed with a regular expression.
Kmaleon Extension Requires Restart
Con esta extensión podrás hacer una copia de tus emails en el programa kmaleon.
Follow Broken Lotus Notes Links Requires Restart
Fixes the HREF on MASFLOW links in emails from Lotus Notes.
If you dont know what that is you do not need this.
Chat RTL Requires Restart
Fixing the Chat so it would support RTL languages (i.e. Hebrew, Arabic) better.
TB Menubar Unread Notifier Requires Restart
Output the number of unread messages in all inboxes into the temporal file /tmp/testUnread. As a result, this output file can serve as an input for other applications to read and show notification either on a dock bar or on the menubar.
SMSalias MozClient Requires Restart
SMSalias is a Firefox/Thunferbird extension that enables you to send SMS messages directly from Browser/email application...
Ethical signature Requires Restart
Add a button to the email composition toolbar, which lets you insert an ethical signature.
Sent-By-User column Requires Restart
Adds a new column in message list-view, that will display the name of the user who sent the mail (read from a message header).
Manual configuration required. ONLY FOR THUNDERBIRD.
Ubuntu Unity unread count and quicklist Requires Restart
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
IO.Translator Requires Restart
即时在线汉英互译 - Instant Online Translator (Chinese-English)
Thunderled Requires Restart
For ASUS laptop owners, each time a new email is in your inbox, the email led will switch on...
Message Level Authentication Requires Restart
Authenticates mail from Message Level Network users, Mail Reputation provided by Sender Score for each message and Anti-Phishing Data from PhishTank. Registration is FREE but not required...