I have only 1 downloadable product that I would like to sell. I am trying to use ubercart for that. But I would like to get rid of the cart and the checkout process and have a paypal button on the same page where the product description is. I know how to put a paypal "buy now" button on my page but with that I do not know how can I send an email to the client with login information and download instructions. What is the best solution for 1 downloadable product website n drupal?
I am new to this, installed drupal a week ago and since then have been watching ubercart tutorials, so I have ubercart set up already.