Encrypt an Email in Microsoft 365 Outlook

Overview

This article explains how to encrypt email messages in Microsoft 365 Outlook to protect sensitive information. It covers selecting encryption options such as Encrypt-Only or Do Not Forward, and ensures your messages are secure while controlling access and forwarding permissions.

Steps to Encrypt an Email 

Step 1: Open the Email Message 

1. Open the email message you want to encrypt in Microsoft 365 Outlook.

Step 2: Access the Encryption Options 

1. Select the Options tab in the email window.

2. Click Encrypt.

Step 3: Choose an Encryption Type 

1. Select the encryption option that meets your needs:

   • Encrypt-Only — the message is encrypted but recipients can forward it.

   • Do Not Forward — the message is encrypted and recipients cannot forward, copy, or print it.

2. Finish composing your email and send it as usual.