The value of the Sender header property.
int SetMsgSender(QString qsMsgSender);
The value of the Sender header field.
This field specifies the mailbox of the agent responsible for the actual transmission of this message. If the originator of the message can be indicated by a single mailbox and both the author and the transmitter are identical, the "Sender:" field is deemed excessive and should not be used.
This property is not available at design time.