2.1.3.2.5 Importance
To generate an Importance header, a client sets the value of the PidTagImportance property ([MS-OXCMSG] section 2.2.1.11) as specified in the following table.
|
PidTagImportance property value |
Importance header value |
|---|---|
|
0x00000000 |
Low |
|
0x00000001 |
Normal |
|
0x00000002 |
High |
MIME writers MUST map the value of the PidTagImportance property to the Importance header, as specified in the table. MIME writers MAY omit the Importance header for a PidTagImportance value of 1 (normal) or for values other than 0, 1, or 2.
When generating a TNEF message, MIME writers also map the value of the PidTagImportance property to the attPriority attribute, as specified in [MS-OXTNEF] section 2.1.3.3.10, and the attMsgProps attribute, as specified in [MS-OXTNEF] section 2.1.3.3.21.