Outlook may have used Windows structured storage back then -- but then again it could just be my imagination. https://learn.microsoft.com/en-us/windows/win32/s

Outlook may have used Windows structured storage back then -- but then again it could just be my imagination. https://learn.microsoft.com/en-us/windows/win32/stg/structured-storage-start-page https://learn.microsoft.com/en-us/windows/win32/stg/structur... e.g. https://www.mitec.cz/ssv.html https://www.mitec.cz/ssv.html