I have a client who is wants to be able to send a customer a gift voucher / discount code with their receipt that is valid for one week and only redeemable once. Basically to encourage them to buy again that week or to pass it onto a friend if they aren't going to use it.
Everything seems to point to this not being possibe as discounts/gift vouchers have to be manually entered, but thought it was worth asking.
Has anyone done anything like this before? Does anyone else feel that this would be a really handy marketing tool to have available?