Microsoft Purview | Data Loss Prevention- DLP to restrict processing external emails in M365 Copilot and Copilot Chat
AI and Copilot
Microsoft Purview is expanding Data Loss Prevention (DLP) to restrict Microsoft 365 Copilot and Copilot Chat from processing emails from external or untrusted domains. This new admin-configurable DLP control, rolling out in public preview June 2026 and general availability June 2027, excludes external emails from Copilot grounding while maintaining internal data use.