After checkout, you will receive an email with a barcode verifying your purchase.  This barcode can be brought into Flight 509 and redeemed for purchases or a physical gift card.  No gifts cards will be mailed.  The bar code will be for the total amount purchased (i.e. for the buy $20 and get $5 free you will only receive one bar code but it would be for $25).  If you need to disburse the barcodes to multiple recipients please purchase those in separate transactions.