To create a link that customers with an account can use to update their billing information, simply add the
cart=updateinfo parameter to your Foxy link, like this: https://your-store.foxycart.com/cart?cart=updateinfo (replace "your-store" with your Foxy subdomain).This link will take customers to the checkout page where they can input the email address and password they used previously to make a purchase. Once logged in, your customers will be able to update their billing information as needed. After updating their billing information, a web receipt will be displayed and an email receipt will be sent as normal.