$config['protocol']  = 'smtp';
  $config['smtp_host'] = 'ssl://smtp.googlemail.com';
  $config['smtp_port'] = 465;
  $config['smtp_user'] = '*******@gmail.com'; // change it to yours
  $config['smtp_pass'] = '******'; // change it to yours
  $config['charset'  ] = 'iso-8859-1';
  $config['newline'  ] = "rn";

  $config['mailtype' ] = 'text';

  $config['validation' ] = TRUE;
   $this->load->library('email',$config);



    $this->email->from('*********@gmail.com');
    $this->email->to('********@gmail.com');
    $this->email->subject('Confirmation Email');
    $this->email->message('Thank you');

    if ($this->email->send())
    {
      echo "send successfully";


    }
    else
    {
      show_error($this->email->print_debugger());
    }