Platform SDK: MAPI

PR_SENDER_ENTRYID

The PR_SENDER_ENTRYID property contains the message sender's entry identifier.

Quick Info

Header file: MAPITAGS.H
Must be exposed by: Message objects
Identifier: 0x0C19
Property type: PT_BINARY
Property tag: 0x0C190102
Corresponding X.400 attribute: IM_ORIGINATOR

Remarks

The PR_SENDER_ENTRYID property is one of the address properties for the message sender. It must be set by the outgoing transport provider, which should never propagate any previously existing values.

If no transport provider has supplied any sender address properties, the MAPI spooler attempts to fill them in by calling the IMAPISession::QueryIdentity method for an entry identifier. If no entry identifiers have been provided, the MAPI spooler stores in PR_SENDER_ENTRYID an identifier corresponding to the string "Unknown."

For more information on the address properties, see Base Address Properties.

See Also

Sender Properties, PR_ENTRYID, PR_SENT_REPRESENTING_ENTRYID