MailItem.Importance (Outlook)
Returns or sets an OlImportance constant indicating the relative importance level for the Outlook item. Possible return values are olImportanceHigh - Item is marked as high importance, olImportanceLow - Item is marked as low importance, olImportanceNormal - Item is marked as medium importance.
This property corresponds to the MAPI property PidTagImportance.
Sub CheckSenderName
Dim myItem As Outlook.MailItem
Set myItem = Application.ActiveInspector.CurrentItem
If myItem.Importance = 2 And _
myItem.SenderName = "Dan Wilson" Then
MsgBox "This message is sent by your manager with High importance."
End If
End Sub