title: Message is missing senders address
body: <p>I am making a contact for a website and I am having issues. 
  I am testing with XAMPP currently, using it's sendmail.
  I keep getting the error: </p>
  
  <blockquote>
    <p>Message is missing sender's address</p>
  </blockquote>
  
  <p>Here is the PHP Header Code:</p>
  
  <pre><code>    //email headers
  $headers = 'From: \""' .$email . '\r\n'. 'Reply-To' .
      $email. "\r\n" .
      'X-Mailer: PHP/' . phpversion();
      mail($email_to, $subject, $message, $headers);
  </code></pre>
  
  <p>I can't figure out the issue.
  Thanks</p>