CmdID / PowerShell / Cmdlets / Get
Get-PublicFolderItemStatistics
Use the Get-PublicFolderItemStatistics cmdlet to view information about items within a specified public folder. Exchange PowerShell reference
From the Exchange PowerShell reference 5 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the GUID or public folder name that represents a specific public folder.-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.-MailboxThe Mailbox parameter specifies the identity of the hierarchy public folder mailbox that you want to view.-ResultSizeThe ResultSize parameter specifies the maximum number of results to return.-ServerThe Server parameter filters the results by the specified Exchange server.