How do I encrypt my email on Outlook app (Desktop)? Open Outlook Click on new email Once the email is open click Options > Encrypt, as highlighted below. When you click on Encrypt you will receive the following options. Below is a description of what these options are used for: ENCRYPT: This option encrypts the email. The recipient will need to follow the instructions in the email to be able to read it. DO NOT FORWARD: If you choose this option it will Encrypt the email but it will also block the recipients from forwarding the email to anybody else. In order to read the content of the email, the recipient may be asked to sign in or use a onetime code for authentication – this is dependent on the email provider. If you do encounter any issues or have any queries on how to encrypt emails then please do contact the IT Service Desk.