Exactly. The absolute best test for whether or not an email address is valid or not is if the mail arrives to the intended recipient. And if you are going to d

Exactly. The absolute best test for whether or not an email address is valid or not is if the mail arrives to the intended recipient. And if you are going to do that email validation step anyways, you could probably get away with just using the simple highly permissible "smoke test" regex for your email address input form validation.