.PST Format Now Mostly Open
Microsoft has been on an interoperability kick of late, and its most recent move involves Outlook's .PST format for storing e-mail. Microsoft recently published all the how-to's and wherefores for .PST so other vendors can tie more directly into the mail store.
There are limits, however: You can only access .PST files running on Outlook, and you can't implement the format in your own products.
Posted by Doug Barney on March 01, 2010