220.127.116.11 PidTagResponseRequested Property
Type: PtypBoolean ([MS-OXCDATA] section 2.11.1)
The PidTagResponseRequested property ([MS-OXPROPS] section 2.919) specifies whether an e-mail sender requests a response to a meeting request, as specified in [MS-OXOCAL] section 18.104.22.168, or requests a voting response (section 22.214.171.124). If present, this property is set to either 0x01, in which case the response to the e-mail message is requested, or 0x00, in which case the response to the e-mail message is not requested. The default is 0x00.