Trying to submit http://www.fortzedchallenge.com/new/Email_to_everyone gives an app error, and Hoptoad says RuntimeError: "found_by" value needs to be valid Search card... which is odd, because http://www.fortzedchallenge.com/wagn/email_testing+user_email_addresses (which is pointed to in http://www.fortzedchallenge.com/wagn/Email_to_everyone+*type+email_config ) doesn't generate an error.