通过MailHog，可以在浏览器中查看本机发的邮件内容，而无需发送到外网。
https://github.com/mailhog/MailHog
在 macOS 环境下，下载文件后:
添加可执行权限:chmod +x MailHog_darwin_amd64
运行:./MailHog_darwin_amd64
浏览器打开查看邮件:http://0.0.0.0:8025/
Laravel 发送邮件到 MailHog 使用例子：
Laravel .env:
MAIL_MAILER=smtp
MAIL_DRIVER=smtp
MAIL_HOST=127.0.0.1
MAIL_PORT=1025
MAIL_USERNAME=xx@qq.com
MAIL_PASSWORD=xx
MAIL_ENCRYPTION=
MAIL_FROM_ADDRESS=xx@qq.com
MAIL_FROM_NAME=APP
通过 notifications 发送邮件通知：
https://learnku.com/docs/laravel/10.x/notifications/14870#0b4ad8
public function toMail($notifiable)
{$title = '系统通知:' .' 运单-' . $this->data['data']['waybill']->name . ' 有来自 ' . $this->data['user'] . ' 的新留言:';$line_title = '运单-' . $this->data['data']['waybill']->name . ' 有来自 ' . $this->data['user'] . ' 的新留言:';return (new MailMessage)->subject($title)->line($line_title)->line($this->data['data']['message'])->action($this->data['data']['waybill']->name, url('waybill/') .'/'. $this->data['id'])->line('Thank you for using our application!');
}
)
