Hi

I need to sell authorisation codes. I am provided with a list of codes and I need to setup a system where I can sell individual codes. The code needs to be sent in a email with some other information after purchase. Once a code has been sold it can be sold again.

I wondering how I can do this is Ecommerce do I:
setup each Auth code as a product? or
setup each Auth code as a licensed file?

Do I use rules to sent the email or is that handled by ecommerce?

How do I set the availability (quantity) of each product to one (1)?
How do I stop the product from being resold?

Thanks