$EMAIL_GV_AMOUNT - $GV_REDEEM_CODE
$EMAIL_STORE_NAME
$EMAIL_GV_TEXT_HEADER $EMAIL_GV_AMOUNT
$EMAIL_GV_FROM $EMAIL_GV_MESSAGE
$EMAIL_GV_SEND_TO
$EMAIL_MESSAGE_HTML
$GV_REDEEM_HOW
$GV_REDEEM_URL
$GV_REDEEM_URL
$EMAIL_GV_FIXED_FOOTER
$EMAIL_GV_SHOP_FOOTER