LazyMAPI

MAPI Properties

MAPI Property: PR_SENT_REPRESENTING_ADDRTYPE, PR_SENT_REPRESENTING_ADDRTYPE_A, PR_SENT_REPRESENTING_ADDRTYPE_W
Description: Contains the address type for the messaging user who is represented by the sender.
Property ID: $0064
Property type: PT_UNICODE, PT_STRING8
Area: Address
Remarks:
 These properties are examples of the address properties for the messaging user being represented by the sender. When a client application sends a message on behalf of another client, it should set all the represented sender properties to the values for that client. A messaging user sending on its own behalf typically leaves the represented sender properties unset.
The outgoing transport provider must always leave this property unchanged if it has been set by the sending client. If it is unset, the transport provider should set it to the PR_SENDER_ADDRTYPE (PidTagSenderAddressType) property on the outbound copy of the message, and leave it unset on the local copy.