Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.Close
Display Mail User Agent T 220.127.116.11 Requires Restart
Displays the mail program with which the selected mail was written
*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.
About this Add-on