gmail smtp settings to Codeigniter 3

<?php
$config = [
    'protocol'  => 'smtp',
    'smtp_host' => 'smtp.gmail.com',
    'smtp_port' => 587, //ssl=>465, tls:587
    'smtp_user' => '@gmail.com',
    'smtp_pass' => '',
    'smtp_crypto' => 'tls', //or ssl
    'mailtype'  => 'html', //or text
    'charset'   => 'utf-8'
];

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

$this->email->from('@', 'name');
$this->email->to('@');

$this->email->subject('teszt');
$this->email->message('teszt mail with TLS');

$this->email->send()); //return bool
?>