Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Select DisplayName,StorageLimitStatus,@{name="TotalItemSize (MB)";expression={[math]::Round(($_.TotalItemSize.Split("(")[1].Split(" ")[0].Replace(",","")/1MB),2)}},@{name="TotalDeletedItemSize (MB)";expression={[math]::Round(($_.TotalDeletedItemSize.Split("(")[1].Split(" ")[0].Replace(",","")/1MB),2)}},ItemCount,DeletedItemCount | Sort "TotalItemSize (MB)" -Descending | Export-CSV "C:\My Documents\All Mailboxes.csv" -NoTypeInformation

Get-Mailbox -Database cooperati01 | Get-MailboxStatistics | ft displayname,totaldeleteditemsize,totalitemsize


Get-Mailbox | Get-MailboxStatistics | ft DisplayName,TotalItemSize,TotalDeletedItemsize,Database


Get-MailboxStatistics | where { $_.DisconnectDate -ne $null } | FT DisplayName,TotalItemSize,TotalDeletedItemSize,Database,DisconnectDate