Get mailbox grant send on behalf to (PowerShell)

et-Mailbox -Filter {GrantSendOnBehalfTo -ne $Null} |Select Alias, @{Name='GrantSendOnBeh
alfTo';Expression={[string]::join(";", ($_.GrantSendOnBehalfTo))}} | Export-Csv -NoType -encoding "unicode" C:\MailboxesSendOnBehalfPermCheck.csv