Email: is there any header which when present sophisticated email client will not add original email when reply action is hit

Question

Is there any header which when present sophisticated email client will not add original email when reply action is hit,

For example I get an email: containing text abc from [e-mail], and I reply with xyz, I am trying to parse out xyz content

There are various ways to do it however

Can I enforce standard client not to include original email's body so parsing of just reply can made easier ?

Answer 1

No. The relevant Internet standards do not specify a header to control whether the original text is copied into replies. Whether to do this or not is left up to the mail client, and a sophisticated one will allow the user to decide whether original text is included or not.