> if your idea of validating an email is more complicated than "should have an @ symbol", I guarantee you, there is counter example that will mess you pretty sy

> if your idea of validating an email is more complicated than "should have an @ symbol", I guarantee you, there is counter example that will mess you pretty system up. unless you are writing an email server. Then you would need to do this properly. In other words, validate the data that is in the domain of your application. If your app simply _sends_ email, then it's not your domain, and don't need to validate, as long as the receiving end of the email (aka, the email server) accepts it.