Zend_Mail::clearReplyTo PHP Method

    public function clearReplyTo()
    {
        $this->_replyTo = null;
        $this->clearHeader('Reply-To');
        return $this;
    }

 public function setReplyTo($email, $name = null)
 {
     parent::clearReplyTo();
     return parent::setReplyTo($email, $name);
 }