Summary
- Outlook for Mac will support Microsoft Purview DLP wait-on-send policies, allowing email to be held until DLP evaluation completes.
- Administrators can configure a maximum wait period so sensitive messages are inspected before they leave the organization.
- The change affects organizations using Exchange Online and Microsoft Purview DLP enforcement for Outlook for Mac users.
- Admins should review existing DLP policies and decide whether to enable wait-on-send for their compliance requirements.
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.
Score rationale: This is a standard feature rollout providing new security controls with no immediate mandatory actions.
Outlook for Mac will support Microsoft Purview DLP wait-on-send policies, requiring email evaluation before sending to protect sensitive data. Rolling out in late September 2026, this feature lets administrators set wait times for policy checks, enhancing compliance and security while balancing user productivity.
Microsoft 365 Message Center ID: MC1472019
Primary Service: Purview
Admin Impact: Medium
User Impact: Low
Release Start: 30 Sept 2026
Release End: 30 Sept 2026
Published: 15 Sept 2026
Expires: 28 Dec 2026
Last updated: 15 Sept 2026
Category: Stay Informed
Tags: New feature, User impact
Status: Launched
Products & Platforms: Exchange Online, Microsoft Purview
History
9/14/2026 Item Added to Message Center
Microsoft Message
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 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.