isaacd

No. The number of users who have a real email with no TLD is far less than the number of users who will accidentally type an email with no TLD if you don’t validate on the front end.

I’m here to help 99.9% of users sign up correctly, not to be completely spec-compliant for the 0.1% who think they’re special.

Let us recite the email validator’s oath:

If it has something before the @, something between the @ and the ., and something after the ., it’s valid enough.