Thanks Ray.
Cancel goes to cart which is what i want.
I think i have the checkout_failure page set to notify me by email if a payment fails. That is what my whole question is about so that i know when a person tried to buy our product and failed at paypal so we can contact them and try to rectify the problem, if possible.
I am attaching my checkout_failure page and the mail body of the email that should be generated by that page. If you see anything that is not correct, please let me know.
Thanks for your support!