I'd like to have emails to a given domain, say http://mydomain.com/, processed by an AppEngine app, let's call it http://emailprocessor.appspot.com/ .
That is, an email to "hello@mydomain.com" should be received and processed by emailprocessor.appspot.com as if it was an email to "hello@emailprocessor.appspot.com" .
I imagine I could do this via MX records for my mydomain.com domain, but I can't find instructions anywhere.
Is this possible, and if so does one set it up?