How to send email (Gmail) through CakePHP built-in module

'EmailTransport' => [
        'default' => [
            'className' => 'Smtp',
            'host' => 'smtp.gmail.com',
            'port' => 587,
            'timeout' => 30,
            'username' => 'name@gmail.com',
            'password' => '12345678',
            'tls' => true,
            'url' => env('EMAIL_TRANSPORT_DEFAULT_URL', null),
        ],
    ],
'Email' => [
     'default' => [
         'transport' => 'default',
         'from' => 'name@gamail.com',
         //'charset' => 'utf-8',
         //'headerCharset' => 'utf-8',
     ],
 ],

//在最上面加载模块
use Cake\Mailer\Email;

//在任意class下写邮件发送的函数
public function send()
    {
        $email = new Email('default');
        try {
            $email->setFrom(['name@gmail.com' => 'My Site'])
                ->setTo('接受者邮箱@126.com')
                ->setSubject('主题')
                ->send('本文');
            echo "success";
        } catch (\Cake\Network\Exception\SocketException $exception) {
            $lastResponse = $email->transport()->getLastResponse();
            var_dump($lastResponse);
        }
    }

$routes->connect('/send', ['controller' => 'ControllerName', 'action' => 'send']);