Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Privacy and Security
Blends OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS used the most in the world. Thunderbird can also be blended in as Firefox.
Check if your emails arrived TLS-encrypted (and which corporations were able to read it nevertheless)
Mailsleuth is a add-on for Thunderbird that provides you a full email header analysis of any email in your Inbox. This add-on is designed to provide a report on the email headers on any email you choose from your inbox. MAJOR updates for Feb 2013!
Turn on/off the alert shown when new message arrives.
Shows whether the application is running with admin privileges, using an icon in the status bar; useful if logged in as an administrator and you use privilege limitation tools such as DropMyRights, RunAs or Windows User Account Control.
Adds an option to export all root certificates.
The abusix Spam Reporter enables you to forward and report spam to the abusix blackhole.mx systems directly from Thunderbird (free of charge). Thus, you help professionals and security vendors to fight spam much more effectively at the source.
View Your Certificates Email Address No Restart
Adds a column for displaying the certificates Email address to the "Your Certificates" tab of the Certificate Manager
Encrypt your text data in browser before you submit it to a network
Extension that allows Firefox and Thunderbird to store passwords in Keyring, Gnome's default password store.
Report spam and ham to IronPort - originally written for our MailSentry hosted IronPort customers, it can be used by anyone who has their email filtered by an IronPort appliance.
SpamBayes integration for Thunderbird - a better spam filter.
CallingID Link Advisor verifies the links you see in Firefox and Thunderbird are safe before you follow them. When the mouse is placed over any link a risk assessment and the full details of the site owner are displayed, helping you evaluate the...
A multi-faceted, collaborative approach against spam.
Element Hiding Helper for Pan No Restart
Help you create element hiding rules for Pan to fight the text ads.
Alerts user to confirm that it is ok to send an external email.
Sets message security (sign/encrypt) when sending or saving messages based on recipients' address book entry's field "Custom1".
A small ergonomic 1-click cookie manager.
Clears IMAP local cache on startup.
XML Digital Signature Tool is a Firefox add-on for processing Digital Signature in XML documents
(Please read the installation instruction in the "Developer Comments" section before downloading)
This add-on is not compatible with your version of Thunderbird because of the following:
- Add-on uses binary components.