In Pictures: 12 free Microsoft Exchange tools ever...
Steve Goodman’s Exchange Environments Report
Steve Goodman’s Exchange Environments Report is a PowerShell script that generates an automatic overview of your Exchange environment. It works with versions of Exchange ranging from 2003 to 2013. It reports the total number of servers per Exchange version (including the service pack), the total mailboxes per version, the Exchange roles deployed in the environment, a site-by-site breakdown of mailboxes, as well as a breakdown of each Database Availability Group. This is a great tool to assist with plotting storage growth over time and can help with planning for future growth.
In Pictures: 12 free Microsoft Exchange tools every IT admin will love