Most Popular Extensions
Options Toolbar Button Requires Restart
Identity Reminder Requires Restart
How many times have you sent out an email and forgotten to set the appropriate email identity? Over and over I send out an email from the wrong address and promise myself I'll never forget again and from now on, I will make sure to set the...
Path Explorer Requires Restart
Adds "Open with Explorer" to the message pane's right-click menu.
Crmthdb Lite ZohoCRM Thunderbird Extension Requires Restart
Connect Thunderbird and share mails with ZohoCRM. The Lite version lets you display contacts of Zoho CRM inside Thunderbird. The full version on http://sites.google.com/site/crmthdb lets you archive your mails and add contacts into Zoho CRM.
TexTra Thunderbird Requires Restart
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.
Mail Size Report Requires Restart
Report current size of mail with attachment files in status bar
SendToSecondEmail Requires Restart
This Extension lets you send Mails to both, first and second email address...
This extension is the most advanced tool to reach Clickbank Store with ease get your to favorite products.If you right-click on some selected text, then it will give an option to search the selected text.
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.
Send to xNode Requires Restart
Sends content to xNode for analysis. Provides information on domain names, IP addresses, eMail addresses, certificates and much more.
NewsWorthy for Thunderbird 1.5 Requires Restart
Making Thunderbird newsworthy (Usenet client support)...
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.
A button to call up the Sunbird Calendar from Firefox and Thunderbird toolbars . 64 BIT operating system version!
Timer Fire Requires Restart
A simple tool to trigger some of the background timers.
A powerful ad blocker that blocks ALL ads but ads from publishers who shares revenues with targets YOU choose.
PennyPost Requires Restart
This extension makes it very easy to generate and attach stamps to outgoing mail. It also automatically detects and verifies stamps on incoming emails. The MBound algorithm requires a 16MB fixed table to work, HashCash is more CPU intense.
Re: Sort Requires Restart
DeleteSimilar Requires Restart
Auto-delete similar newer incoming RSS messages.
No GUI (Hands free). To make it work you just rename the RSS folder to start with a minus.
i.e. Google News to -Google News
Uses Trash. Keeps oldest message to preserve Read status.
S/MIME Security for Multiple Identities Requires Restart
Adds S/MIME Security configuration to the multiple identities dialog.
Meanwhile this feater has been integrated into Thunderbird 3