Sign mails using Thunderbird or SeaMonkey
Note: Some small differences might appear between versions of ThunderBird and Seamonkeys.
Run ThunderBird or SeaMonkey
Menu Mail and Newsgroup account settings
![](/ca/Help/Contents/Images/SeaMonkey/Image1.jpg)
Select Security
![](/ca/Help/Contents/Images/SeaMonkey/Image2.jpg)
In Digital Signing click Select
Select the User Certificate you want to use to sign your outgoing emails and click Ok
![](/ca/Help/Contents/Images/SeaMonkey/Image3.jpg)
Select No in the following warning popup
![](/ca/Help/Contents/Images/SeaMonkey/Image4.jpg)
Check Digitally Sign messages (by default)
![](/ca/Help/Contents/Images/SeaMonkey/Image5.jpg)
Click OK