Sell they only open the first few emails now days
I would have some kind of pitch in every email. Give your subs what they came onto your list for because if not, theyll go somewhere else.
ABC - They came to your landing page because they were looking for a solution to their problem. Build the relationship by solving their problem. In other words...SELL them. I once had a sales manager at a car dealership I worked at tell me this: "Randy, these people don't want to buy a car from you, they want you to SELL them one."