There’s been some buzz lately about the fact that Microsoft has decided to fully document the Outlook PST storage format and open it up for developers to freely code against. So what does this mean? . . .
Well, in the short term there are two immediate impacts we’ll see by software developers having deep access into Outlook PST storage format: (1) faster development of Outlook plugins such as Xobni, and (2) easier migration of mail data out of Outlook and into services such as Rackspace Email and Google Apps. This move by Microsoft will drastically reduce the time it takes to develop these products because developers no longer have to reverse engineer the Outlook storage format.