``` bash
php artisan make:command CheckStatusCommand && php artisan make:notification HorizonIsInactiveNotification
```

``` php CheckStatusCommand
<?php  
  
namespace App\Console\Commands;  
  
use App\Notifications\HorizonIsInactiveNotification;  
use Illuminate\Console\Command;  
use Illuminate\Support\Facades\Notification;  
use Laravel\Horizon\Contracts\MasterSupervisorRepository;  
  
class CheckStatusCommand extends Command  
{  
    protected $description = 'Command description';  
    protected $signature   = 'horizon:check-status';  
  
    /**  
     * Execute the console command.     
     */
    public function handle(): void  
    {  
        if (!$this->shouldBeActive()) {  
            return;  
        }  
  
        if ($this->isHorizonActive()) {  
            return;  
        }  
  
        $this->error('Horizon is inactive on: ' . config('app.name'));  
        
        Flare::report(new Exception('Horizon is inactive'));
  
        Notification::route('mail', 'dev@strixi.nl')  
            ->notify(new HorizonIsInactiveNotification());  
    }  
  
    protected function isHorizonActive(): bool  
    {  
        if (!$masters = app(MasterSupervisorRepository::class)->all()) {  
            return false;  
        }  
  
        return collect($masters)->some(fn($master): bool => $master->status !== 'paused');  
    }  
  
    protected function shouldBeActive(): bool  
    {  
        return config('queue.default') === 'redis';  
    }  
}
```


``` php HorizonIsInactiveNotification
<?php  
  
namespace App\Notifications;  
  
use Illuminate\Notifications\Messages\MailMessage;  
use Illuminate\Notifications\Notification;  
  
class HorizonIsInactiveNotification extends Notification  
{  
    public function via(object $notifiable): array  
    {  
        return ['mail'];  
    }  
  
    public function toMail(object $notifiable): MailMessage  
    {  
        return (new MailMessage)  
            ->subject('Horizon is inactive on: ' . config('app.name'))  
            ->line('Horizon is inactive on: ' . config('app.name'))  
            ->action('Goto site', url(config('app.url')));  
    }  
}
```

``` php kernel or bootstrap
$schedule->command(\App\Console\Commands\CheckStatusCommand::class)->everyFifteenMinutes();
```