The following table describes properties that clients can expect to set or see supported on messages of all classes.
| Property | Description |
|---|---|
| PR_CREATION_TIME | Set by message store providers on outgoing messages. |
| PR_DISPLAY_BCC PR_DISPLAY_CC PR_DISPLAY_TO |
Set by message store providers on outgoing messages. |
| PR_ENTRYID | Set by message store providers on outgoing messages. |
| PR_LAST_MODIFICATION_TIME | Set by message store providers on outgoing messages. |
| PR_MESSAGE_ATTACHMENTS | Set by message store providers on outgoing messages. |
| PR_MESSAGE_CLASS | Can be set by clients on outgoing messages; must be set by message store providers if not set by clients. |
| PR_MESSAGE_FLAGS | Set by clients on outgoing messages before they have been saved and message store providers after they have been saved. |
| PR_MESSAGE_RECIPIENTS | Set by message store providers on outgoing messages. |
| PR_MESSAGE_SIZE | Set by message store providers on outgoing messages. |
| PR_MESSAGE_CC_ME PR_MESSAGE_RECIP_ME PR_MESSAGE_TO_ME |
Set by transport providers on incoming messages. |
| PR_NORMALIZED_SUBJECT | Set by message store providers on outgoing messages |
| PR_ORIGINATOR_AND_DL _EXPANSION_HISTORY PR_ORIGINATOR_CERTIFICATE PR_ORIGINATOR_DELIVERY_REPORT_REQUESTED PR_ORIGINATOR_NON_DELIVERY_REPORT_REQUESTED PR_ORIGINATOR_REQUESTED_ALTERNATE_RECIPIENT PR_ORIGINATOR_RETURN_ADDRESS |
Set by transport providers on outgoing messages. |
| PR_PARENT_ENTRYID PR_PARENT_DISPLAY |
Set by message store providers on outgoing messages. |
| PR_RCVD_REPRESENTING_ADDRTYPE PR_RCVD_REPRESENTING _EMAIL_ADDRESS PR_RCVD_REPRESENTING_ENTRYID PR_RCVD_REPRESENTING_NAME PR_RCVD_REPRESENTING_SEARCH_KEY |
Set by transport providers on incoming messages. |
| PR_RECEIVED_BY_ADDRTYPE PR_RECEIVED_BY_EMAIL_ADDRESS PR_RECEIVED_BY_ENTRYID PR_RECEIVED_BY_NAME PR_RECEIVED_BY_SEARCH_KEY |
Set by transport providers on incoming messages. |
| PR_RECIPIENT_TYPE | Set by message store providers on incoming messages. |
| PR_RECORD_KEY | Set by message store providers on outgoing messages. |
| PR_SEARCH_KEY | Set by message store providers on outgoing messages. |
| PR_SENDER_ADDRTYPE PR_SENDER_EMAIL_ADDRESS PR_SENDER_ENTRYID PR_SENDER_NAME PR_SENDER_SEARCH_KEY |
Clients can set these properties on outgoing messages, but transport providers are required to set them. |
| PR_SENT_REPRESENTING_ADDRTYPE PR_SENT_REPRESENTING _EMAIL_ADDRESS PR_SENT_REPRESENTING_ENTRYID PR_SENT_REPRESENTING_NAME PR_SENT_REPRESENTING_SEARCH_KEY |
Clients can set these properties on outgoing messages, but transport providers are required to set them. |
| PR_STORE_ENTRYID PR_STORE_RECORD_KEY |
Set by message store providers on outgoing messages. |