Using Microsoft Exchange 2007 / 2010 Management Shell (PowerShell with extensions), you can pull out some very exciting statistics. That was never that easy in the pre Exchange 2007 era.

Let’s start with some easy stuff..

Get the number of Public Folders

Get-PublicFolder -Recurse | Measure-Object

Get the sum / number of Mails / Object in all Public Folders

Get-PublicFolderStatistics | Measure-Object -Property ItemCount -Sum

Get the number of Mailboxes

Get-Mailbox | Measure-Object

Get the number of sent messages / emails within a date range

Get-MessageTrackingLog -Start "29.11.2009" -End "30.12.2009" -ResultSize Unlimited | Measure-Object