Goal: Send an email that takes more than 1,000ms to validate!
Regex: /^([a-zA-Z0-9])(([\-.]|[_]+)?([a-zA-Z0-9]+))*@[a-z0-9]+\.(([a-z]{2,3})|([a-z]{2,3}\.[a-z]{2,3}))$/
/^([a-zA-Z0-9])(([\-.]|[_]+)?([a-zA-Z0-9]+))*@[a-z0-9]+\.(([a-z]{2,3})|([a-z]{2,3}\.[a-z]{2,3}))$/