(Updated) [Outlook Mobile] Purview DLP Wait-on-Send Support

Updated October 6, 2026: We have updated the timeline. Thank you for your patience. 

[What and why:]

Outlook for iOS and Android will support Microsoft Purview Data Loss Prevention \(DLP\) wait\-on\-send policies. Organizations can require a DLP evaluation before an email is sent and configure how long users must wait for policy evaluation to complete. This helps ensure sensitive information is inspected against organizational policies before messages leave the organization while providing administrators with flexible control over the user experience.

[Rollout schedule:]

General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out in mid-November 2026 (previously late September) and expect to complete by mid-November 2026 (previously late September).

[Impact on your organization:]

This feature helps organizations reduce the risk of sensitive information being sent before Microsoft Purview DLP policies can be evaluated. Administrators can require users to wait for policy inspection and configure the maximum wait time based on organizational requirements. This improves policy enforcement and compliance while allowing organizations to balance security, performance, and user productivity.

[Action required / Recommendations:]

Administrators can review their existing Microsoft Purview Data Loss Prevention policies and determine whether wait-on-send enforcement is appropriate for their organization. To take advantage of this feature, administrators may enable and configure the desired wait period within supported DLP policies. No changes are required for organizations that do not plan to use wait-on-send enforcement.