Per example Printful, Printify or Gelato.

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Send the print-ready PDF file either to WooCoomerce with the order (as a URL in one of the order fields, for example) or directly via email once the order is complete. We need to share these print-ready files with a printer and we are looking for the easiest way to do so.

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I want to send the orders to my manufacturer but with customized details (of the print files too).

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We have a Shopify store selling our own custom products. Is there a way to automate download of print files with Zapier, API or webhooks. We need to automate the workflow in our own print shop.