Microsoft Defender for Office 365: Localized default mark and notify email template

Microsoft Defender for Office 365 will localize the default “Mark and notify” email template based on users’ Outlook language settings, improving clarity in user-reported message notifications. Rollout begins June 2026 worldwide, with no impact on message classification or custom templates. No action required. What and Why Microsoft Defender for Office 365 is introducing localization support for the default “Mark and notify” email template used in admin review and automated notification flows for user-reported messages. This update ensures that users receive notification emails in their preferred language based on their Outlook settings, improving clarity and understanding of review outcomes. This helps improve engagement and supports stronger security practices. This message is associated with Microsoft 365 Roadmap ID 557558. Rollout Schedule General Availability Worldwide: Rollout begins in June 2026 and is expected to complete by late July 2026. GCC, GCC High, DoD: Rollout begins in mid-July 2026 and is expected to complete by late July 2026. Impact on Your Organization Who is affected Organizations using Microsoft Defender for Office 365 Admins and users participating in user-reported message workflows Applies only when the default notification template is used Platforms/Services Microsoft Defender for Office 365 Microsoft 365 Defender portal (web) Exchange Online What will happen Default “Mark and notify” email templates will be localized. Notifications will be delivered in the user’s preferred language based on Outlook settings. Feature is enabled by default when auto-notification is turned on. Notifications will have consistent formatting and messaging across supported languages. No changes to message verdicts or classification logic. No changes to automated investigation behavior. No changes to custom notification templates configured by admins in the user reported settings page. Screenshot 1 – Before localization view:  View image in new tab Screenshot 1 – Localized template view:  View image in new tab Action Required/Recommendations No action is required. You may consider the following: Inform users that notification emails may now appear in their preferred language. Review notification settings in Microsoft Defender: Settings > Email and collaboration > User reported settings. Update internal documentation or helpdesk guidance if this workflow is documented. Learn more: Notify users about admin submitted messages to […]

The post Microsoft Defender for Office 365: Localized default mark and notify email template appeared first on M365 Admin.