Custom organization branding for quarantine notification
Microsoft will be adding capabilities to making it possible for Security Operations (SecOps) to customize end user quarantine notifications with their respective organization sender address and custom subject.
When this will happen:
Standard: will begin rolling out in late August and is expected to be complete by early September.
Government: will begin rolling out in mid-September and is expected to be complete by late September.
How this will affect your organization:
This change will enable admins to customize the sender address of the quarantine notification as well as the subject of the notification.
What you need to do to prepare:
You might want to notify your users about this change and update your training and documentation as appropriate.
Quarantine notifications (end-user spam notifications) in Microsoft 365 – Office 365 | Microsoft Docs