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Comment by milesokeefe | Hacker News Reader

Nope, pretty basic server side validation in PHP:

     filter_var($_POST['email'], FILTER_SANITIZE_EMAIL)

"FILTER_SANITIZE_EMAIL" doesn't do any validation. That only filters.

Which is what I want. It prevents attacks but allows me to see the odd non-email stuff people submit.

FILTER_VALIDATE_EMAIL