Типы значений свойств e-mail-сообщения.

[uuid(D3C0EDCA-47B9-47C2-93D3-7B69BD706D4C), version(1.0)]
enum _MessagePropertyTypeEnum {
  mptUndefined = 0,
  mptNull = 1,
  mptInteger = 3,
  mptDouble = 5,
  mptBoolean = 11,
  mptString = 30,
  mptUnicodeString = 31,
  mptSysTime = 64,
  mptGUID = 72,
  mptBinary = 258
};