Microsoft Outlook: Support pop-up messages in Outlook that warn, justify, or block emails being sent with sensitivity labels
Outlook desktop native sensitivity labeling will support oversharing pop-up dialogue as AIP plug-in to warn, justify or block email being sent. Admin could use the Microsoft Purview compliance portal to define the oversharing pop-up DLP rules(Roadmap 100157) to group of users. If users has the configured DLP rule trigger when they click send, a warn/justify/block pop up message will show up to make sure customer could comply admin’s security double check requirements. As the first stage, Outlook desktop will only support these Pop-up message for DLP rule regarding sending emails to external with specific email and attachment labels. More DLP condition support will come later.