These are called self-liquidating funnels. The idea is that the funnel you use to gain subscribers also has an offer that will appeal to at least enough subscribers to cover any cost of the traffic. These are simple enough to set up. PLR is great for this if you don't want to create something yourself.
Build an email list at no cost.
Build an email list at no cost.
Build an email list at no cost.
These are called self-liquidating funnels. The idea is that the funnel you use to gain subscribers also has an offer that will appeal to at least enough subscribers to cover any cost of the traffic. These are simple enough to set up. PLR is great for this if you don't want to create something yourself.