New Outlook Gets Smarter DLP

The news that the new Outlook client will support custom oversharing dialogs for DLP policies might not seem very interesting, but it provoked me into looking more closely into how to build and deploy custom oversharing dialogs. All it takes is some well-structured JSON and an update to DLP rules, and the classic and Monarch Outlook clients should display custom tenant instructions to anyone who violates DLP rules.

https://office365itpros.com/2026/02/12/custom-oversharing-dialog-dlp/