coolify/app/Notifications/Channels/TransactionalEmailChannel.php

<?php

namespace App\Notifications\Channels;

use App\Models\InstanceSettings;
use App\Models\User;
use Exception;
use Illuminate\Mail\Message;
use Illuminate\Notifications\Notification;
use Illuminate\Support\Facades\Mail;
use Log;

class TransactionalEmailChannel
{
    private bool $isResend = false;
    public function send(User $notifiable, Notification $notification): void
    {
        $settings = InstanceSettings::get();
        if (!data_get($settings, 'smtp_enabled') && !data_get($settings, 'resend_enabled')) {
            Log::info('SMTP/Resend not enabled');
            return;
        }
        $email = $notifiable->email;
        if (!$email) {
            return;
        }
        $this->bootConfigs();
        $mailMessage = $notification->toMail($notifiable);
        if ($this->isResend) {
            Mail::send(
                [],
                [],
                fn (Message $message) => $message
                    ->from(
                        data_get($settings, 'smtp_from_address'),
                        data_get($settings, 'smtp_from_name'),
                    )
                    ->to($email)
                    ->subject($mailMessage->subject)
                    ->html((string)$mailMessage->render())
            );
        } else {
            Mail::send(
                [],
                [],
                fn (Message $message) => $message
                    ->from(
                        data_get($settings, 'smtp_from_address'),
                        data_get($settings, 'smtp_from_name'),
                    )
                    ->bcc($email)
                    ->subject($mailMessage->subject)
                    ->html((string)$mailMessage->render())
            );
        }
    }

    private function bootConfigs(): void
    {
        $type = set_transanctional_email_settings();
        if (!$type) {
            throw new Exception('No email settings found.');
        }
        if ($type === 'resend') {
            $this->isResend = true;
        }
    }
}