PHP(Codeigniter)电子邮件帮助

if($this->session->userdata('group_id') == '1') {
                $data['key'] = $insertUser['activation_key'];
                $data['name'] = $insertUser['name'];
                $config = array(
                  'protocol' => 'smtp','smtp_host' => 'ssl://smtp.googlemail.com','smtp_port' => 465,'smtp_user' => '*********','smtp_pass' => '********','mailtype' =>'html'
                );
                $this->load->library('email',$config);
                $this->email->set_newline("rn");

                $this->email->from('no-reply@email.com','Email');
                $this->email->to($insertUser['email']);

                $this->email->subject('Your employers account');
                $this->email->message($this->load->view('emails/signup',$data));


                if (!$this->email->send())
                  show_error($this->email->print_debugger());
                else
                  redirect('admin/users');
            }