Added a counter for current mailbox

Exchange/Export-all-mailboxes.ps1

@@ -28,7 +28,7 @@ foreach ($Mailbox in $Mailboxes) {
         $OverallPercentComplete = [math]::Round((($CurrentMailbox - 1 + ($MailboxPercentComplete / 100)) / $TotalMailboxes) * 100, 2)
 
         # Display Progress Bar for Overall Process
-        Write-Progress -Activity "Exporting Mailboxes" `
+        Write-Progress -Activity "Exporting Mailboxes ($($CurrentMailbox)/$($TotalMailboxes))" `
                        -Status "Processing: $($Mailbox.Alias) ($MailboxPercentComplete% complete)" `
                        -PercentComplete $OverallPercentComplete
     } while ($ExportRequest)