You can quote the headers and body of the original message in a replies using text similar to the one below:
===== YOUR MESSAGE ======
Subject: $(Original-Subject)
Date: $(Original-Date)
From: $(Original-From)
To: $(Original-To)
$(Original-Body)
You can use $(Original-Subject) in the subject of the reply, e.g. Re: $(Original-Subject).
To quote the headers in their entirety, use $(Original-Header).
Quoting the body of an opt-in message in a follow-up message or in a message to subscribers is currently not possible, but you can quote the headers using one of the following fields:
$(Opt-In-All-Headers)
$(Opt-In-Basic-Headers)
$(Opt-In-Received-Headers)
