I just registered to Instantly yesterday and I wanted to buy DFY(Done-For-You) emails today from them, but I just realized the emails subscription renew every 15th of the month. But I think there might be a clause, and I need someone that has tried this before to tell me Let's use numbers for a better understanding. If i buy 20 emails today at $5 per email i.e 20 emails * $5 = $100 monthly I would be charged $100 on 6th February(today). How much would I be charged on 15th February ? And How much would I be charged on 15th March ?