$msg = new MIME::Lite(
        From => "Registration System <register\@example.com>",
        To => $REGISTRATION,
        Subject => "Conference Registration",
        Type => 'text/plain',
        Encoding => '7Bit',
        Data => $body
    );

    $msg->delete("X-Mailer");
    $msg->send_by_sendmail(Sendmail => "/usr/sbin/sendmail") or do {
        # log the error
    }