Within an organization I had need to bulk load behind the scenes a number of calendar items on all employee’s accounts. This script had multiple sources with the original idea coming from http://www.mikepfeiffer.net/2011/01/creating-calendar-items-with-powershell-and-the-ews-managed-api/ To get this working requires a few things. 1) Exchange 2010 with SP1 (currently running under SP2) 2) The Exchange EMS shell …