Identifying duplicate items is seperate PST files

Sep 6, 2011 at 7:12 AM

I need to consolidate items from pst files that were created by many users using outlook connected to a local exchange server.

Many messages were addresed to a few users, and were saved to each users PST file. so we have the same message in multiple files.

I want to be able to save only a single copy of that message.

Is there some ID I can compare to see that two messages are the same original message ?

Thanks in advance.