Can you tell us in 2-3 sentences the application of this patent and then it would easier to come up with prior art examples.
Like hosay said is it like a "novel" bus ticket design but for emails.
The intended goal of this thing is to fully describe email threads in a manner that is durable. To my knowledge, even today, there are no structures or grammars that are capable of describing email content and fully retaining their original definitions after full exposure the various software of the email platform. Rich text format comes close, though.
