function index() {

        $config = Array(
            'protocol' => 'smtp',
            'smtp_host' => 'ssl://smtp.google.email.com',
            'smtp_port' => 465,
            'smtp_user' => 'example@gmail.com',
            'smtp_pass' => '123456'
        );

        $this->load->library('email', $config);
        $this->email->set_newline("\r\n");

        $this->email->from('example@gmail.com', 'Willy Aguirre');
        $this->email->to('example@gmail.com');
        $this->email->subjet('Prueba de Correo');
        $this->email->message('Funciona, Genial :D!');

        if ($this->email->send()) {
            echo 'Tu correo ha sido enviado';
        } else {
            show_error($this->email->print_debugger());
        }
    }