184.108.40.206 PidTagSentMailSvrEID Property
The PidTagSentMailSvrEID property ([MS-OXPROPS] section 2.1011) represents the Sent Items folder for the message. This folder MUST NOT be a search folder. The server requires write permission on the folder so that the sent e-mail message can be copied to the Sent Items folder.
If this property is present, a copy of the message is created in the specified folder after the message is sent.