MAPI Properties

For a general explanation of how MAPI works with properties and a list of the properties available on each object, see Properties1.TLD0M. For information on the property-related macros, see the SPropValue81C9._8 structure. For a comprehensive list of MAPI properties and their mappings to X.400 attributes, see Mapping of X.400 P2 Attributes to MAPI PropertiesUSD_RN. 

Unlike members of OLE variant arrays, every member in a MAPI multivalued property array is of the same type.