Coś takiego byłby w sam raz: W sensie zasady działania.
CytatSet which order state an order should have so that an email is sent to the customer to download the purchased products.
Supported file formats by default are: zip, rar, pdf, png, jpg, jpeg, gif, doc, docx, txt and many others (see below full list of extensions).
Ewentualnie to: https://webkul.com/blog/prestashop-virtual-file-manager/