| Member | Value | Description |
|---|---|---|
| msgContent | 0 | Requests the retrieval of the complete message for each message in MsgSet. |
| msgPreview | 3 | Requests the message header followed by 'n' lines, where 'n' is the value of the Preview property. |
| msgSize | 1 | Requests the size for each message specified in MsgSet. |
| msgUidl | 2 | Requests the message UID label for each message in MsgSet. |