You can send it by visiting your bank and requesting a wire transfer or ACH transfer. Or, you can send it using a money transfer service that specializes in transfers, domestic and international. You can use an app such as PayPal to send a remittance to another country. These electronic services move money quickly, often within a day. If you prefer, you can always send a money order by U.S. mail but how soon it will arrive at its destination depends on which service you use (e.g., first-class international mail or Express mail).