Top Policies Report
This report shows the 5 polices that have matched the most messages per time period. Specifically, when you select a time period (7 days, 2 weeks, or Month), Cloud Email Protection looks at which 5 policies matched the more messages during that time period, and then creates an incremental plot for each policy, a daily increment for the 7 days and 2 weeks views, a weekly increment for the Month view.