CmdID / PowerShell / Cmdlets / Set
Set-DefaultTenantBriefingConfig
Use the Set-DefaultTenantBriefingConfig cmdlet to modify the default Briefing email configuration in cloud-based organizations. Exchange PowerShell reference
From the Exchange PowerShell reference 2 parameters Its page in the reference
Parameters
-IsEnabledByDefaultThe IsEnabledByDefault parameter specifies the default Briefing email configuration for the organization.-ResultSizeThis parameter is reserved for internal Microsoft use.