RM561552Microsoft Purview: Data Loss Prevention to restrict processing external emails in Microsoft 365 Copilot and Copilot Chat

We are expanding Microsoft Purview DLP for Microsoft 365 Copilot and Copilot Chat to safeguard risks from external emails. This real-time control helps organizations mitigate data risks by preventing Microsoft 365 Copilot and Chat from processing emails from senders external to your organization. This capability currently extends to Microsoft 365 Copilot and agents built in Copilot Studio that are published to Microsoft 365 Copilot.

GA date: July CY2026

Preview date: June CY2026