The new Microsoft 365 Defender portal includes some email-related reports that have been moved from the old Security Center. In this article, you will learn about the reports available in the new and the old portal. This will help you manage your tenant in an organized manner.
In this post, I explain the details of each report with examples.
https://4sysops.com/archives/mail-flow-reports-in-the-microsoft-365-defender-portal/