I own a flipkart gift voucher for 750/-. The design of the voucher comes in an email format that needs to be printed if you need to gift somebody. The design doesn’t look like a voucher, looks like any other boring printed paper when printed.
So possibility for someone to lose it very very high. I don’t know if that was intentional. So in my case I misplaced the printed email paper and managed to find a little later after the expiry date. I sent a request mail to flipkart asking if I could still use it, obviously I got a prompt email back saying NO. It was sad to lose so much money, also I found their voucher format really tricky.