if ($sent) {
        echo "<H1>Your Message Has Been Sent.</H1>";  
        echo "Thank you, <b>$email</b>.  <p>I'll
                  will read your email regarding '
                  <b>$subject</b> and reply soon.";  
     }
     else {
        echo "<H1>There is a Problem:</H1>
              <p>The server was unable to send your
                   mail.";
        }