Secure Webmail is a webmail add-on to the encryption gateway. If the rules on the gateway determine that a message should be encrypted, and S/MIME, PGP or PDF encryption is not available (for example because there is no certificate for a recipient), the email will be sent to the Webmail server via an S/MIME secured tunnel. The recipient gets a notification that a new message is available. The first time the user receives a message, the user needs to select a secure password. The user can read and reply to the message using any web browser.