Invoice Inn issues the invoice the moment an order is paid or fulfilled, emails it to the customer, and files a copy in your cloud. Refunds become credit notes, the original stays exactly as issued, and your numbering never breaks.Setup takes about two minutes. AI designs a template from your store’s colors and fonts, or you pick one of ours. Every detail stays editable with a live preview: branding, columns, numbering, wording. No code. Credit notes are free on every plan.