The Get-MailTrafficSummaryReport cmdlet gets a lot of praise in some quarters. I am not so impressed. The Exchange Online cmdlet is useful, but it’s now showing its age in a world when better data to create a view of user activity is available elsewhere, notably in the Microsoft Graph. This doesn’t mean that the cmdlet doesn’t do a good job; it’s just that it hasn’t received much love from Microsoft since 2015.
For whatever reason, Microsoft decided to cancel plans to remove the Top Senders and Recipients report from the SCC, citing customer feedback as the reason. The thing is that the SCC report and its underlying cmdlet use an old data source. The Microsoft Graph Reports API is the modern approach and an adequate replacement usage reports is available in the Microsoft 365 admin center. I really can’t understand why anyone would want to keep the old report as it’s not very good at all.