GSA Bounty: Multiple Bugs in api.data.gov/signup endpoint leads to send custom messages to Anyone

Hey there, while signing for new api key, i have found two bugs that is unusual and make anyone to send crafted or customised email to someone. Bug 1: - low 1. Go to https://api.data.gov/signup/ 2. Enter first and last name , then enter email id and get api key. Bug: You can use the same email id...