Arkadaşım
    $mail = new PHPMailer();
    //$mail->IsSMTP();
    $mail->SMTPAuth = true;
    $mail->SMTPSecure = "tls";
    $mail->Host = 'smtp.gmail.com';
    $mail->Port = 465;
    $mail->SMTPDebug  =  2; 
    $mail->Username = '******@gmail.com';
    $mail->Password = '*********';
    $mail->SetFrom('onalonr@gmail.com', "Anan");
    $mail->AddAddress("pehaspe@hotmail.com", "Onur ÖNAL");
    $mail->CharSet = 'UTF-8';
    $mail->Subject = "New Order ";
    $mail->MsgHTML('Deneme.');
    $mail->Send();
bu şekilde dene.