| Platform SDK: MAPI |
The PR_SENDER_SEARCH_KEY property contains the message sender's search key.
| Header file: | MAPITAGS.H |
| Must be exposed by: | Message objects |
| Identifier: | 0x0C1D |
| Property type: | PT_BINARY |
| Property tag: | 0x0C1D0102 |
The PR_SENDER_SEARCH_KEY 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_SEARCH_KEY a key corresponding to the string "Unknown."
For more information on the address properties, see Base Address Properties.
Sender Properties, PR_SEARCH_KEY, PR_SENT_REPRESENTING_SEARCH_KEY