Microsoft to open up Outlook format

A report on CNET says that Microsoft will be publicly documenting the formats of .pst files used by Outlook. Microsoft’s Paul Lorimer is quoted as saying the format specification will be available “under our Open Specification Promise, which will allow anyone to implement the .pst file format on any platform and in any tool, without concerns about patents, and without the need to contact Microsoft in any way.” No timetable is given.