Email Encryption
In an email message, choose Options, select Encrypt and pick the encryption that has the restrictions you want to enforce, such as Encrypt-Only or Do Not Forward.
Encrypt a single message
- In message that you are composing, click File > Properties.
- Click Security Settings, and then select the Encrypt message contents and attachments check box.
- Compose your message, and then click Send.
Encrypt all outgoing messages
When you choose to encrypt all outgoing messages by default, you can write and send messages the same as with any other messages, but all potential recipients must have your digital ID to decode or view your messages.
- On the File tab. choose Options >Trust Center > Trust Center Settings.
- On the Email Security tab, under Encrypted email, select the Encrypt contents and attachments for outgoing messages check box.
- To change additional settings, such as choosing a specific certificate to use, click Settings.