Encrypt on a per message basis

1. In the message, click Options.
2. Click Security Settings.
3. Select the check box marked 'Encrypt message contents and attachments'.
4. To change additional settings, such as choosing a specific certificate to use, click Change Settings.
5. Click OK three times.

Please note: If you use Microsoft Word as your e-mail editor, there is a quick way to encrypt a message. With the new message open, on the E-mail toolbar, click the locked envelope icon.