If you receive a Gift Certificate by email it will contain details of who sent you the Gift Certificate, possibly along with a short message from them. The email will also contain the Gift Certificate Number. It is probably a good idea to print out this email for future reference. You can redeem the Gift Certificate in two ways:
1. Click on the link contained within the email. This will take you to the store's "Redeem Voucher" page. You will then be prompted to create an account. Once you do, the Gift Certificate is validated and placed in your Gift Certificate Account, ready for you to spend it on whatever you want!
2. During the checkout process, on the same page that you select a payment method there will be a box to enter a Redeem Code. Enter the code here, and click the Redeem button. The code will be validated and added to your Gift Certificate account. You can then use the amount to purchase any menu item.