Please don't use that to filter real email addresses. The author admitted he doesn't distinguish between addresses which are actually invalid and those he merel

Please don't use that to filter real email addresses. The author admitted he doesn't distinguish between addresses which are actually invalid and those he merely doesn't think are advisable to use, and it's not clear whether he even read the RFC 2822 grammar. At a glance, there's only one regex on the page that makes any effort to handle the valid address "Your Name"@example.com.