On 03/08/2018 10:29 AM, Laurence Taylor wrote:
X-No-Archive is really only needed for Usenet posts where they can be
archived by various places (like Google or Narkive).
I've seen the case made that it indicates that recipients do not have
permission to archive the email, and as such, doing so is a copyright
violation. As such, its has uses far beyond that of Usenet.
jonathon
