脱离 laravel 之后，Illuminate\mail 如何发送邮件？

1. 直接使用低层的symfony/mail

2. 还要安装view组件↓

   $mailer = new n\Illuminate\Mail\Mailer('default', new  \Illuminate\Contracts\View(选个engine, 选个finder, new laravel的事件管理器), new Symfony的transport, new laravel的事件管理器);
   
   $mailer-> 此时跟着laravel文档就行了。

综上所述，请选1

// composer require symfony/mailer
use Symfony\Component\Mailer\Transport;
use Symfony\Component\Mailer\Mailer;
use Symfony\Component\Mime\Email;

$transport = Transport::fromDsn('smtp://SMTP服务器');
$mailer = new Mailer($transport);
$email = (new Email())
    ->from('xx@x.com')
    ->to('xx@xxxxx.com')
    ->subject('test')
    ->text('test')
    ->html('test');

$mailer->send($email);
// 完事