Yes, but only when the order is linked to a customer account. Every successful refund (full, custom amount, or single item) fires the order refund marketing trigger to the customer's email — the message includes the refunded amount and, for item refunds, the item name — and also sends an admin order refund copy to your business email address. Full refunds additionally create an in-app notification Order Refunded with a link to the order, and that notification fires regardless of whether the order has a linked account. On a guest order (no customer account), neither the customer email nor the admin copy is sent, because both are only triggered when the checkout has a linked user — the in-app notification is the only trace of a full refund in that case.