Create SendWelcomeEmailNotification notification

php artisan make:notification SendWelcomeEmailNotification

Create SendWelcomeEmail listener on user registration

php artisan make:listener SendWelcomeEmail --event=Illuminate\\Auth\\Events\\Registered

Open up App\Listeners\SenWelcomeEmail.php, add the following lines:

$event->user->notify(
    new SendWelcomeEmailNotification()
);

Then register App\Listeners\SenWelcomeEmail to Illuminate\Auth\Events\Registered in app\Providers\EventServiceProvider.php.

protected $listen = [
    'Illuminate\Auth\Events\Registered' => [
        'App\Listeners\SendWelcomeEmail',
    ],
];

Please ensured to setup your database and emails connection, and migrate the existing migration scripts.

php artisan migrate

Then you're ready to register. You should receive email once registered.