I was asked to take a look at the mailbox to inventory the size and dates of the mail to see what archiving policy would reduce the mailbox size by at least 50-70%. If this user has 45GB in the last 6 months, then a 1 year policy won’t be of much value and I think that the user won’t want anything less than a year. I need to find a report mailbox folder sizes with PowerShell within a date range. I think I should use the Get-MailboxFolderStatistics -identity cmdlet but not certain. Can you help?