Schedule/Auto Email sending from Laravel (Cron Job)

1) php artisan make:command AutoBirthDayWish
 
2) php artisan make:mail BirthDayWish
namespace App\Mail;
  
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;
  
class BirthDayWish extends Mailable
{
    use Queueable, SerializesModels;
  
    public $user;
  
    /**
     * Create a new message instance.
     *
     * @return void
     */
    public function __construct($user)
    {
        $this->user = $user;
    }
  
    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        return $this->subject('Happy Birthday '. $this->user->name)
                    ->view('emails.birthdayWish');
    }
}
 
<?php
  
namespace App\Console\Commands;
  
use Illuminate\Console\Command;
use Mail;
use App\Mail\BirthDayWish;
use App\Models\User;
  
class AutoBirthDayWish extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'auto:birthdaywith';
  
    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Command description';
  
    /**
     * Execute the console command.
     *
     * @return int
     */
    public function handle()
    {
        $users = User::whereMonth('birthdate', date('m'))
                    ->whereDay('birthdate', date('d'))
                    ->get();
  
        if ($users->count() > 0) {
            foreach ($users as $user) {
                Mail::to($user)->send(new BirthDayWish($user));
            }
        }
  
        return 0;
    }
}
 
<?php
  
namespace App\Console;
  
use Illuminate\Console\Scheduling\Schedule;
use Illuminate\Foundation\Console\Kernel as ConsoleKernel;
  
class Kernel extends ConsoleKernel
{
    /**
     * Define the application's command schedule.
     *
     * @param  \Illuminate\Console\Scheduling\Schedule  $schedule
     * @return void
     */
    protected function schedule(Schedule $schedule)
    {
        $schedule->command('auto:birthdaywith')->daily();
    }
  
    /**
     * Register the commands for the application.
     *
     * @return void
     */
    protected function commands()
    {
        $this->load(__DIR__.'/Commands');
  
        require base_path('routes/console.php');
    }
}