And I don't understand how they manage to make it "easy" for the user to make both their "special" emails encrypted by the user and unreadable to their server and at the same time allowing users to send the "normal e-mails" to other e-mail servers/users that have to be unencrypted.
Anybody knows?
Edit: can fully unencrypted e-mails be sent and received via their services at all? And how did they solve that?