CakePHP에서 이메일을 보내는 방법은 무엇입니까?

    'default' => [
        'className' => 'Mail',
        // The following keys are used in SMTP transports
        'host' => 'localhost',
        'port' => 25,
        。。。
        。。。
     ]
],
'Email' => [
    'default' => [
        'transport' => 'default',
        'from' => 'you@localhost',
        //'charset' => 'utf-8',
        //'headerCharset' => 'utf-8',
    ],
],

    'default' => [
        'className' => 'Smtp',
        // The following keys are used in SMTP transports
        'host' => 'smtp.gmail.com',
        'port' => 587,
        'timeout' => 30,
        'username' => 'you@gmail.com',
        'password' => 'your_password',
        'client' => null,
        'tls' => true,
        'url' => env('EMAIL_TRANSPORT_DEFAULT_URL', null),
    ],
],

  $email = new Email('default');
  $email->from(['your@emailaddress.com' => 'Your Name']);
  $email->to('recipient@emailaddress.com');
  $email->subject('Email Subject');
  $email->send('Hello, this is a test email!');

  $email = new Email('default');
  $email->from(['your@emailaddress.com' => 'Your Name']);
  $email->to('recipient@emailaddress.com');
  $email->subject('Email Subject');
  $email->attachments([
      'file.pdf' => [
          'file' => '/path/to/pdf/file.pdf',
          'mimetype' => 'application/pdf',
          'contentId' => '123456'
      ]
  ]);
  $email->send('Hello, this is a test email with an attachment!');