Exchange Online Inbound messages Report

Not that specific data but here are the PowerShell reports available

Get-AdvancedThreatProtectionDocumentReport
Get-AdvancedThreatProtectionTrafficReport
Get-ATPTotalTrafficReport
Get-CompromisedUserAggregateReport
Get-CompromisedUserDetailReport
Get-ConnectionByClientTypeDetailReport
Get-ConnectionByClientTypeReport
Get-CsActiveUserReport
Get-CsAVConferenceTimeReport
Get-CsClientDeviceDetailReport
Get-CsClientDeviceReport
Get-CsConferenceReport
Get-CsP2PAVTimeReport
Get-CsP2PSessionReport
Get-CsPSTNConferenceTimeReport
Get-CsPSTNUsageDetailReport
Get-CsUserActivitiesReport
Get-CsUsersBlockedReport
Get-DataRetentionReport
Get-DeviceComplianceDetailsReport
Get-DeviceComplianceDetailsReportFilter
Get-DeviceComplianceReportDate
Get-DeviceComplianceSummaryReport
Get-DeviceComplianceUserReport
Get-DlpDetailReport
Get-DlpDetectionsReport
Get-DlpIncidentDetailReport
Get-DlpSiDetectionsReport
Get-EvaluationModeReport
Get-EvaluationModeReportSeries
Get-FfoMigrationReport
Get-GroupActivityReport
Get-InformationBarrierReportDetails
Get-InformationBarrierReportSummary
Get-LicenseVsUsageSummaryReport
Get-MailboxActivityReport
Get-MailboxUsageDetailReport
Get-MailboxUsageReport
Get-MailDetailATPReport
Get-MailDetailDlpPolicyReport
Get-MailDetailEvaluationModeReport
Get-MailDetailMalwareReport
Get-MailDetailReport
Get-MailDetailSpamReport
Get-MailDetailTransportRuleReport
Get-MailFilterListReport
Get-MailFlowStatusReport
Get-MailTrafficATPReport
Get-MailTrafficPolicyReport
Get-MailTrafficReport
Get-MailTrafficSummaryReport
Get-MailTrafficTopReport
Get-MessageTrackingReport
Get-MobileDeviceDashboardSummaryReport
Get-MxRecordReport
Get-MxRecordsReport
Get-O365ClientBrowserDetailReport
Get-O365ClientBrowserReport
Get-O365ClientOSDetailReport
Get-O365ClientOSReport
Get-OutboundConnectorReport
Get-PartnerCustomerUserReport
Get-RecipientStatisticsReport
Get-ReportExecutionInstance
Get-ReportSchedule
Get-ReportScheduleList
Get-ReportSubmissionPolicy
Get-ReportSubmissionRule
Get-SafeLinksAggregateReport
Get-SafeLinksDetailReport
Get-ScorecardClientDeviceReport
Get-ScorecardClientOSReport
Get-ScorecardClientOutlookReport
Get-ScorecardMetricsReport
Get-SensitivityLabelActivityDetailsReport
Get-SensitivityLabelActivityReport
Get-ServiceDeliveryReport
Get-SPOActiveUserReport
Get-SpoofMailReport
Get-SPOSkyDriveProDeployedReport
Get-SPOSkyDriveProStorageReport
Get-SPOTeamSiteDeployedReport
Get-SPOTeamSiteStorageReport
Get-SPOTenantStorageMetricReport
Get-StaleMailboxDetailReport
Get-StaleMailboxReport
Get-SupervisoryReviewPolicyReport
Get-SupervisoryReviewReport
Get-UMCallSummaryReport