ocr: Figure 3 SMF: messags heading fields Field Description pplication-name riginator's application nare Authors Names of the authors BCC Address of blind copy recipients comnents omments Conversation-id Unique id for conversation Copies-to List of each recipient's address Oate Date ressage was conposed Date-received Date recipient's application receives the nessage Forn-type Type of form in nessage body Fron Sender's address Importance Priority of ressage In-reply-to Message ID of original nessage Keywords List of keywords used to classify a nessage Hessage-1d Unique nessage 1d Hessage-type Conten ...