I hope their form validation demo is just a toy and not an actual example of real email validation code, because it doesn't handle '+' in the localpart, which i

I hope their form validation demo is just a toy and not an actual example of real email validation code, because it doesn't handle '+' in the localpart, which is a very commonly used character. I don't see any custom validation code in the demo source, though, so it kind of looks like they have a builtin "email" validator that's broken, which makes me question the production-readiness of this thing.