try to filter mailing list in laravel with validate and unique email only in laravel 5.7 so i tried but its not working please help me out

working on importing mailing list with filtering email which is unique and validate i tried with "validator" but its not working

public static function import($dto,$file){

    $path = $file->getRealPath();

    $data = \Excel::load($path)->get();

    foreach($data->toArray() as $key => $value){
        foreach($value as $row){ 
            if(Validator::make(['email' => $row], [
                'email' => 'required|email'])){
                    $insert_data = Mail::create(array(
                        'name'  => $row['name'],
                        'email'   => $row['email']
                        ));
                    $insert_data->GroupMAil()->attach($dto>group_name);
            }   
        }
    }                   
}

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