CmdID / PowerShell / Cmdlets / Get
Get-UserBriefingConfig
Use the Get-UserBriefingConfig cmdlet to get the current state of the Briefing email flag for the specified user. Exchange PowerShell reference
From the Exchange PowerShell reference 2 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the user that you want to view (for example, lila@contoso.com).-ResultSizeThis parameter is reserved for internal Microsoft use.