The value of the content-type header of the message which was encoded/decoded.
property ContentType: String read get_ContentType write set_ContentType;
This property contains the value of the content-type header of the message which was encoded/decoded. The component filters it out from the MessageHeaders. It shows the user about the type of the parts and their relation to each other.
The content-type attributes such as filename, boundary, charset etc are held in this property.