I just published the December article.
I received a couple of nice comments about last month article about retrieving Office 365 mailboxes statistics. Apparently, I am not alone trying to get information from Office 365 in an automated way!
This month, I will show you 2 more tricks built using PowerShell to get some more information from the Office 365 tenant. First, I will show you how to get the list of mobile devices that connects to the mailboxes. Second, I will show you how to list not-delivered emails.
You can read this month article at http://emoreau.com/Entries/Articles/2016/12/More-PowerShell-for-Office-365--Devices-and-failed-emails.aspx