Reading an encrypted email message (using Outlook.com or Office 365)

If you’re using Outlook.com or Office 365 and are using the Outlook.com website, the Outlook mobile app, or the Mail app in Windows 10, you can read and reply to encrypted messages the same way you do with unencrypted messages. If you’re using Outlook for Windows, Outlook for Mac, or a third-party email app, you’ll receive an email message with instructions for how to read the encrypted message. You can gain access using your Microsoft account or your Office 365 account.

Reading an encrypted email message (not using Outlook.com or Office 365)

You’ll receive an email message with instructions for how to read the encrypted message. If the encrypted message was sent to a Google or Yahoo Mail account, you can authenticate using your Google or Yahoo account or by using a temporary passcode. If the message was sent to a different account (Comcast or AOL, for example) you can use a temporary passcode. The temporary passcode will be sent to you in email.