Yes, MS Mail for PC Networks used a shared file system for email. The Workgroup Apps (WGA) divison ran MS Mail for PC Networks since they produced MS Mail. Got

Yes, MS Mail for PC Networks used a shared file system for email. The Workgroup Apps (WGA) divison ran MS Mail for PC Networks since they produced MS Mail. Gotta dogfood your product. The WGA email system used a Xenix gateway to connect with the rest of Microsoft. The rest of Microsoft ran MS Mail for Windows with a Xenix email backend and address book, since MS was already using Xenix before MS Mail for PC Networks existed. Windows for Workgroups 3.11 contained a one postoffice-version of MSMail, (which could be upgraded to the full version). Some more Microsoft email-related history at https://en.wikipedia.org/wiki/History_of_Microsoft_Exchange_Server#Version_history https://en.wikipedia.org/wiki/History_of_Microsoft_Exchange_...