PayKickstart has the ability to automatically deliver a bonus to a customer, as an incentive to purchase through your affiliate link so you earn a commission.
To add a bonus:
Step 1: Click “Marketing” under the Affiliates navigation, then select a Vendor >> Campaign >> Funnel >> Link
Step 2: You will be able to add a Bonus URL and specify which product the bonus should apply to. You can offer unique bonuses for each product they purchase in a funnel.
Bonuses are sent automatically and immediately upon purchase.
It will look something like this to the customer (emails are fully customizable too):