How to customized email name in the Laravel App?

I am using Laravel 5.7 and using Gmail to sending emails from My App. it is working fine. but currently receiving emails are showing like this. Example 36673283249829975 - Welcome to the site gala Your registered but I need change Example as PPS how can I do this?

this is My VeryfyUser.php file in Mail folder

  public function build()
    {
            $token = bin2hex(random_bytes(7));
    $token = hexdec($token);

        //return $this->view('emails.verifyUser');
        return $this->subject($token)->view('emails.verifyUser');
    }

via Chebli Mohamed