Attach Downloadable products

Would it be possible to have the option to send attached to the completed email the digital products? If they are of reasonable size?

If it is always the same dowloadable file for the product then you can already do that
There are a number of options
See https://docs.nopcommerce.com/en/running-your-store/catalog/products/downloadable-products.html

The downloadable product is different. Every time a customer buys downloadable products, instead of sending the Link to download it, I want the system to attach the file.
Is this possible?