ErrorException : Undefined variable: days

UsermailRespoitory

I want the days should be added inside addDays() The days i will get frm my database

public function create() {

    $users = User::where('user_type', 2)->get();
    $auto_email_templates=AutoEmailTemplate::all()->pluck('days');


    foreach ($users as $user) {

       if( $user->created_at > Carbon::now()->addDays($days)){
            if ($user->created_at < Carbon::now()) //signup
            {    
                return false;
            }
                Mail::to($user)->send(new Automail($template));
                return true;

       }

}

via Chebli Mohamed