Gift cards cannot be refunded to alternative payment gateways. cards that cannot be refunded to the source will be applied as a credit on your Private-Mail account.<br> You understand that by paying for Private-Mail service using BitCoin or another cryptocurrency as a preferred transaction method, you are using a payment means that is not backed by an official governmental entity or international financial institution, and that the payment system may be prone to fluctuations in market value in a very short period of time.