MC1472019 - (Updated) [Outlook Mac] Purview DLP Wait-on-Send Support
Microsoft 365 Message Center announcement MC1472019.
MS Message Center's Summary
Microsoft Purview data loss prevention policies for Outlook on Mac will soon support wait on send functionality. Starting in late September 2026, administrators can configure policies to evaluate outbound emails for sensitive data before sending occurs. You should review your current data loss prevention configurations and determine if you want to enable wait times for your Mac users.
- Administrator impact
- Review existing data loss prevention policies and configure wait on send settings if required.
- End user impact
- Mac users may experience a brief pause before outbound emails send while data loss prevention policies are evaluated.
- Importance
- 3/10: This is a standard feature rollout providing new security controls with no immediate mandatory actions.
Microsoft Summary
Outlook for Mac will support Microsoft Purview DLP wait-on-send policies starting mid-November 2026, allowing organizations to enforce DLP evaluations before sending emails. This enhances data protection by controlling wait times for policy checks, improving compliance and user experience. Administrators should review and configure policies accordingly.
- Message Center ID
- MC1472019
- Category
- stay Informed
- Severity
- normal
- Services
- Exchange Online, Microsoft Purview
- Tags
- Updated message, New feature, User impact
- Published
- 2026-09-14
- Last updated
- 2026-10-06
- Expires
- 2026-12-28
Updated October 6, 2026: We have updated the timeline. Thank you for your patience. [What and why:] Outlook for Mac 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 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.