If people are trying to use email like this, maybe you should implement a "reply to this email to message John Doe" feature. Mailgun offers custom inboxes and

If people are trying to use email like this, maybe you should implement a "reply to this email to message John Doe" feature. Mailgun offers custom inboxes and other features that makes it easy to do this. It might not make sense for you, but just giving some feedback!