This may be obvious but is there a built-in way to send, in the checkout email, a custom link related to the product(s) purchased?

I'm looking at a customer buying a video - hosted elsewhere, with the order confirmation email sending a link to that video. Similar to the downloadable product attribute I guess, but without the need to include a file download. One way would I suppose, to put the link in a pdf and have the customer 'buy' that.