title: Checking if an email address exists
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/565504/how-to-check-if-an-email-address-exists-without-sending-an-email">How to check if an email address exists without sending an email?</a>  </p>
  </blockquote>
  
  
  
  <p>How can you check if an email address actually exists (not just validating)? How do these guys do it: <a href="http://www.email-unlimited.com/tools/verify-email.aspx" rel="nofollow noreferrer">http://www.email-unlimited.com/tools/verify-email.aspx</a></p>
  
  <p>It seems to work...</p>