Now I work with QiWi through their store, but there is a 3% commission.
I saw on one site that the user pays through kiwi without a commission, he is given a number for which you need to transfer money, with a unique note, that's all. Commission 0, everyone is happy.
How can this work? In the usual Kiwi (not in the ishop store) I did not find any http notifications, as is usually done ...
Maybe someone will tell, maybe they parse mail, or something else?