Hello,

I posted a PowerShell script on the Technet. This script will make an inventory of your Exchange/Office 365 environment and export it to a CSV file :

This is a simple script that export some informations about all mailboxes present in your current Exchange session (can be Exchange or Office 365) :

1. Name
2. Total Item
3. Total Size
4. Total Size In MB
5. Inbox Item Count
6. Inbox Item Size
7. LastReceive date in Inbox
8. FirstReceive date in Inbox
9. Deleted Items Count
10. Deleted Items Size
11. Sent Items Count
12. Sent Items Size
13. Total Calendar
14. Total Calendar Size
15. Contacts Count
16. LastLogon date
17. Language

The script display a progress bar indicating the avencement of the process.

Prerequisites :

1. PowerShell 3 and more
2. Connected Exchange Session

You’ll find here.