Advanced [tab] / Certificate [tab] -> View Certificates [button]
Authorities [tab] -> Import [button]
Select "FotonEmailCA.cer" file. Check "This certificate can identify mail users".
Your Certificates [tab] -> Import [button]
Select "*.p12" file. Enter password.
Other People's [tab] -> Import [button]
Select "*.cer" client certificates. If the senders CA is in the Trusted CA's List, then they are automatically added here.
Set your digital signature certificate for each account:
Tools [menu] -> Account Settings [menu item]
Account Settings [window] -> * account [list item] -> Security [list item] -> Select [button]
Select the certificate you want to sign/encrypt your mails with.
You can sign your message by default:
