EmailCredit or a refund
Subject: Your options for order.name
Hi customer.first_name,
Thanks for sending back your return for order.name. You can choose how you get your money back:
1. Store credit of amount plus bonus, sent as a gift card by email / a balance on your account. It never expires / lasts 12 months and works on anything in the store.
2. A refund of amount to your original payment method.
Reply with 1 or 2 and we will take care of it.