Can a receipt ONLY for a specific product (I'm doing a webinar) include a custom URL?

[cameronjpu]

These sales are all done online via a web link.  I would like the emailed receipt to include the link that they need to the webinar.  As it is, the online confirmation page shows it, but not the receipt that comes to the buyer.  I see a custom text option, but that appears to be for every receipt, not just the one specific product purchased.  Thanks - 

[Callee1945]

One option is to add the link to the item description and then in your Settings, under "Receipts" turn on "Show Item Description." Then the link will appear under the item on the receipt.