Information about the amount of space that occupies a particular mailbox, we can easily preview the Exchange Management Console.
Unfortunately, if we want to get more information about the mailboxes, or mailboxes that meet that special condition, the realization of such a task in the EMC will be very time consuming.
In such a case comes to us from the console using the Exchange Management Shell (EMS) in which the PowerShell commands, we can get a lot of interesting information on the mailboxes located on Microsoft Exchange.
Display all information about the mailbox:
Get-MailboxStatistics firstname.lastname@example.org | FL