Vietjet kindly present you useful information as follows:
You can purchase a flight e-Voucher for your own use, or for a gift to someone special.
Flight e-Voucher is eligible for payment of Vietjet's flight booking subject to scope of use and during validity of the e-Voucher.
Upon successful payment, each e-Voucher will be automatically sent to the email address of the purchaser and also to the email address of the beneficiary if registered at the time of purchase. Also the e-Voucher will be archived in the e-Voucher Account of the purchaser and the beneficiary (if any) if such e-Voucher Account has been successfully Registered with the above email address.
Our e-Voucher Account facility is free for your use. This assists you in conveniently managing your e-Voucher transaction history.
Please refer to Terms and Conditions of e-Voucher for more details.