I have a funnel that redirect people to an offer after they opt-in. So, i don't want them to opt-in AGAIN after buying. I want to separate them from those who didn't buy so i don't spam them with the same product they already purchased.
I'm using AWeber. So, how to separate the buyers and the non-buyers?
AND, there is a way to do so with affiliate marketing too? or this only could be done if it's my own product?