ctrlpanel/app/Notifications/ConfirmPaymentNotification.php

<?php

namespace App\Notifications;

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

class ConfirmPaymentNotification extends Notification implements ShouldQueue
{
    use Queueable;

    private Payment $payment;

    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public function __construct(Payment $payment)
    {
        $this->payment = $payment;
    }

    /**
     * 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  $notifiable
     * @return MailMessage
     */
    public function toMail($notifiable)
    {
        return (new MailMessage)
            ->subject('Payment Confirmation')
            ->markdown('mail.payment.confirmed' , ['payment' => $this->payment]);
    }

    /**
     * Get the array representation of the notification.
     *
     * @param mixed $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            'title'   => "Payment Confirmed!",
            'content' => "Payment Confirmed!",
        ];
    }
}