Question

Contoso uses Purview Message Encryption. A compliance officer sends an encrypted email from Outlook on the web to an external recipient at a partner organization. The email contains a Word document attached from the sender's OneDrive as a cloud attachment (sharing link) rather than a copy. The compliance officer wants to ensure the attached document itself remains protected when the external recipient opens it. What determines whether the linked document is protected?

Accepted Answer

The document's protection depends on the sensitivity label and sharing permissions configured on the file in OneDrive, not on the message encryption applied to the email.

Answer

Purview Message Encryption automatically applies encryption to any cloud attachment link included in the encrypted message.

Answer

Cloud attachments cannot be included in encrypted emails, so the message will fail to send until the file is attached as a copy.

Answer

The external recipient must install the Purview Information Protection client before the cloud attachment link will resolve.