Has this dude really never looked at SMTP headers? He's proposing that we add "the meta Time information to the email construct". Emails already contain lots of

Has this dude really never looked at SMTP headers? He's proposing that we add "the meta Time information to the email construct". Emails already contain lots of time information about each step the email took in its journey to your inbox. It sounds like what he's really proposing is some new "X-Delete-By" header for mail user agents to obey if they so choose. Technical questions aside, this idea is very very bad. Self-deleting email is the stuff of dystopian nightmares. This would be an unprecedented level of restrictive DRM. On that basis alone I feel quite confident in strongly rejecting the idea.