MC1472021 - [Outlook Mobile] Purview DLP Wait-on-Send Support

Microsoft 365 Message Center announcement MC1472021.

MS Message Center's Summary

Microsoft Purview data loss prevention policies for Outlook on iOS and Android now support wait on send functionality. This update lets administrators configure a mandatory inspection period before messages leave the device, ensuring strict compliance and data protection. Rollout begins in late September 2026. Administrators should review current data loss prevention configurations and determine if this feature fits their security strategy.

Administrator impact
No direct administrator action is required.
End user impact
Mobile users might experience a brief pause during email transmission while data loss prevention policies are evaluated.
Importance
4/10: This is a standard administrative capability addition that requires proactive configuration only if adoption is desired.

Microsoft Summary

Outlook for iOS and Android will support Microsoft Purview DLP wait-on-send policies, allowing organizations to require and configure a wait time for DLP evaluation before sending emails. This enhances sensitive data protection and policy enforcement, with rollout starting and completing in late September 2026.

Message Center ID
MC1472021
Category
stay Informed
Severity
normal
Services
Exchange Online, Microsoft Purview
Tags
New feature, Admin impact
Published
2026-09-14
Last updated
2026-09-14
Expires
2026-12-28

[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 on late September 2026 and expect to complete by late September 2026. [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.