OpticsPlanet.com Email Gift Certificate - 500. com Email Gift Certificate 500 lets you give the gift of choice Surprise that special someone with the perfect gift from our store an email from opticsplanet.com. The coupon code in the email is valid for one year and can be used in-store and on our website. You can redeem your .com Email Gift Certificate on any product in our store by phone or in person. Simply follow the instructions on the coupon code and e-mail to the recipient. You may also print the coupon code and present it as is.