| The main problem so far seems to be the impenetrability of the | MAPI documentation. Does anyone know of a usable reference or | which of the gazillion Microsoft Developer network CDs one can | find more information? MAPI is in part of the Win32 SDK, whichi is available on MSDN level 2, in the \mstools\mapi subdirectory. http://www.microsoft.com/win32dev/mapi/ is the MAPI home page. http://www.microsoft.com/win32dev/mapi/internet.htm has some good MAPI/Exchange resource pointers. http://www.microsoft.com/msdn/sdk/ is a new site for downloading parts of the SDK online, but it is just getting started (i.e., i'm not sure that the MAPI part is ready yet). as for the other question about Outlook -vs- Exchange, see http://www.microsoft.com/outlook/documents/emailfs/default.htm for a comparison. Lee