How to fetch the "Last Sent, Last Received" message timestamps for a list of mailboxes using PS?

Hey Techies, 

In an Exchange 2013 environment, how do we fetch the "Last Sent, Last Received" message timestamps for a list of users based on a CSV using powershell? 

I tried PowerShell a bit but didn't succeed. Appreciate if someone can help out here !

Cheers!