As mentioned in my previous post I was recently working with a customer to get started with Exchange Online PowerShell commandlets. In this post I wanted to follow up and show one example of a difference in output from commandlets in Exchange 2010 on-premises vs. Exchange Online. Problem The customer was interested in getting the size of mailboxes in GB. For Exchange on-premises this is fairly easy. A fellow PFE Gary Siepser wrote an article explaining how to accomplish this (click here). Note that ......