UNIT3D/app/Notifications/UserEmailChange.php

<?php

declare(strict_types=1);

/**
 * NOTICE OF LICENSE.
 *
 * UNIT3D Community Edition is open-sourced software licensed under the GNU Affero General Public License v3.0
 * The details is bundled with this project in the file LICENSE.txt.
 *
 * @project    UNIT3D Community Edition
 *
 * @author     HDVinnie <hdinnovations@protonmail.com>
 * @license    https://www.gnu.org/licenses/agpl-3.0.en.html/ GNU Affero General Public License v3.0
 */

namespace App\Notifications;

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

class UserEmailChange extends Notification
{
    use Queueable;

    /**
     * Create a new notification instance.
     */
    public function __construct(public User $user, public string $oldEmail, public string $newEmail)
    {
    }

    /**
     * Get the notification's delivery channels.
     *
     * @return array<int, string>
     */
    public function via(object $notifiable): array
    {
        return ['mail'];
    }

    /**
     * Get the mail representation of the notification.
     */
    public function toMail(object $notifiable): MailMessage
    {
        return (new MailMessage())
            ->greeting('Your Email Address Has Been Changed!')
            ->line('Your email address regarding account '.$this->user->username.' has been changed from '.$this->oldEmail.' to '.$this->newEmail.'. If you feel this was done in error, please create a helpdesk ticket.')
            ->action('Helpdesk', route('tickets.index'))
            ->line('Thank you for using 🚀'.config('other.title'));
    }
}