Firstly, allow the setting of a sensitivity field when sending e-mail. This is currently possible using the Outlook client, but not in webmail.

Secondly, allow axigen to be configured (possibly via an advanced routing rule), that for certina sensitivity settings (e.g. private and confidential) configurably by the user, the receiving server must be using SSL (via STARTTLS) - if the receiving server does not support STARTTLS or rejects the attempt to connect via STARTTLS, send a bounce message to the sender.

The sender can that choose whether to resent the message with a low sensitivity (no-one that it will be sent via unencrypted SMTP) or to send the information via another means.