$this->load->library('email');
    $this->email->set_newline("rn");

    $config['charset'] = 'utf-8';
    $config['wordwrap'] = TRUE;
    $config['mailtype'] = 'html';
    $config['protocol'] = 'smtp';
    $config['smtp_port'] = 465;
    $config['smtp_host'] = 'ssl://smtp.googlemail.com';
    $config['smtp_user'] = "something@gmail.com";
    $config['smtp_pass'] = "xxx";

    $this->email->initialize($config);

    $this->email->from('something@gmail.com', 'NayLinAung');
    $this->email->to('something@gmail.com');
    $this->email->subject('This is an email test');
    $this->email->message("It is working, Great! You will be successful.");

    if ($this->email->send())
    {
        echo "Email was successfully sent.";
    }
    else {
        show_error($this->email->print_debugger());
    }