Is it possible to sell software that requires a license key to activate the software. I couldn't find anything about this on the Clickbank site. Specifically: is there the option for a vendor to set up automatic delivery of a license key upon receiving payment from a customer?
Yes, you may do that. You can set up a automatic delivery for a license, but you would need to do some php coding in order to create a script that does that.
I have a script that can do this. It was written with PHP/MySQL and also requires wrapping the software with a login protection. It uses the ClickBank Notification System (API) to generate a unique key for each new sale. This information is stored in an online database on the server along with customer email address. The IPG Delivery script then sends the customer the protected software download URL and his unique key via web interface and email. Contact me if you want more information about how it works. I am new here so, cannot post links yet, and my 2page pdf is too large to upload!