Hey @Emi5
Shopify doesn’t support attaching invoices to order confirmation emails by default, and Order Printer alone won’t do it. While paid apps can handle this, a great free alternative is the iWeb Order Printer PDF Invoice app.
It doesn’t attach the invoice file, but it lets you add a “Download Invoice” button to the email or order status page. This keeps things simple, professional, and totally free—perfect if you’re just getting started and want to avoid extra costs.