laravel从多个smtp电子邮件发送邮件

MAIL_DRIVER=smtp
MAIL_HOST=smtp.example.com
MAIL_PORT=587
MAIL_USERNAME=your_username
MAIL_PASSWORD=your_password
MAIL_ENCRYPTION=tls

MAIL_HOST_SECOND=smtp.anotherexample.com
MAIL_PORT_SECOND=587
MAIL_USERNAME_SECOND=your_username
MAIL_PASSWORD_SECOND=your_password
MAIL_ENCRYPTION_SECOND=tls

'smtp' => [
    'transport' => 'smtp',
    'host' => env('MAIL_HOST'),
    'port' => env('MAIL_PORT'),
    'encryption' => env('MAIL_ENCRYPTION'),
    'username' => env('MAIL_USERNAME'),
    'password' => env('MAIL_PASSWORD'),
    'timeout' => null,
    'auth_mode' => null,
],

'smtp_second' => [
    'transport' => 'smtp',
    'host' => env('MAIL_HOST_SECOND'),
    'port' => env('MAIL_PORT_SECOND'),
    'encryption' => env('MAIL_ENCRYPTION_SECOND'),
    'username' => env('MAIL_USERNAME_SECOND'),
    'password' => env('MAIL_PASSWORD_SECOND'),
    'timeout' => null,
    'auth_mode' => null,
],

Mail::mailer('smtp')->to($email)->send(new WelcomeEmail($user));