phpvms/app/Notifications/UserPending.php

<?php

namespace App\Notifications;

use App\Models\User;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;

class UserPending extends Notification implements ShouldQueue
{
    use Queueable;

    private $user;

    /**
     * @param \App\Models\User $user
     */
    public function __construct(User $user)
    {
        $this->user = $user;
    }

    /**
     * Get the notification's delivery channels.
     *
     * @param mixed $notifiable
     *
     * @return array
     */
    public function via($notifiable)
    {
        return ['mail'];
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param mixed $notifiable
     *
     * @return \Illuminate\Notifications\Messages\MailMessage
     */
    public function toMail($notifiable)
    {
        return (new MailMessage())
            ->from(config('mail.from.address', 'no-reply@phpvms.net'))
            ->subject('Your registration is pending')
            ->markdown('mail.user.pending', ['user' => $this->user]);
    }

    /**
     * Get the array representation of the notification.
     *
     * @param mixed $notifiable
     *
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            'user_id' => $this->user->id,
        ];
    }
}