M365 Changelog: (Updated) Microsoft Defender for Office allows submission of up to 100 emails

MC535260 – Updated April 27, 2023: Microsoft has updated the rollout timeline below. Thank you for your patience.

Applicable to Tenants with Exchange Online Protection, Microsoft Defender for Plan 1 or Plan 2 or Microsoft 365 Defender plan. 

Coming soon, Microsoft Defender for Office 365 will allow you to submit up to 100 emails at once from quarantine, threat explorer (or real-time detections tool) and User reported page to Microsoft for analysis.

This message is associated with Microsoft 365 Roadmap ID 115509

When this will happen:

This change will start rolling out early May (previously late April) and will be completed by early July (previously mid-May).

How this will affect your organization:

This will allow you to make fewer manual submissions while increasing the number of emails you can submit at once. 

What you need to do to prepare:

There is no action needed to prepare for this change. You may want to notify your users about this change and update any relevant documentation as appropriate.