Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Privacy and Security
This extension configures Thunderbird to make connections over the Tor anonymity network.
Easily and quickly to encrypt / decrypt
For users: private messages via e-mail, blogs, social networks, forums, etc.
For webmasters: websites, images, photos, etc.
Support: Firefox, Thunderbird and SeaMonkey
Remove elements and block content on Web pages.
The Swedish Chef travesty filter and URL blocker. View web pages or mail as spoken by the Swedish Chef like this...
"Zee Svedeesh Cheff trefesty feelter und URL blucker. Feeoo veb peges oor meeel es spukee by zee Svedeesh Cheff leeke-a thees."
Verifies the DKIM-Signature of an e-mail.
StartupMaster No Restart
Asks for the master password at startup (fixes multiple password prompt)
CookieKeeper No Restart
Extended Cookie Manager - Keep only wanted cookies.
This add-on provides features to avoid sending emails to wrong addresses. Key features are a confirmation window of recipient's addresses upon sending, name and affiliation look up at mail composition and main windows, and safe auto completion.
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.
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows
Check the message contents and addresses before you send the message...
A small ergonomic 1-click cookie manager.
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
Certificate viewer enhancements: PEM format view, file export, trust configuration
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
In the Firefox Browser (and other Mozilla programs) you can per default configure only the setting for one internet connection. With this Proxy Switch you can manage different configurations and simply switch over between these.
This Add-on allows to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (if this is your default mode).
exports by an intervall or after pressing the button selected calendars in a defined folder in two modes - normal and backup...
On my homepage is the current version.
Here on this site it takes a long time after i publish a new version.
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.