The Exchange Team Blog have released a new tool called “PST Capture” so you can discover and import .pst files across your environment.

PST Capture is used to discover and import Outlook Personal Folder (.pst) File Format files into Exchange Server and Exchange Online. PST Capture helps an organization that wishes to gain more control over their email data repositories by placing them into Exchange. By optionally installing PST Capture Agents on target machines, administrators can determine where .pst files are located and who their file owner is via the PST Capture Console. Administrators can import .pst files via Import Lists to Exchange Server or Exchange Online. Data can be directly imported into the primary mailbox or associated archive mailbox.

Check out this blog article describing the tool:

And the download location:

Even if you don’t plan on importing the .PST files into Exchange, it can be very useful to determine how many .PST files you have and where they are located.