Hey,

I'm a ConvertKIt Affiliate and I received notice today about the new free plan on offer.

https://convertkit.com/convertkit-goes-freemium

With the free ConvertKit plan you can create unlimited landing pages or opt-in forms to start building your list of subscribers. There's also a refer-a-friend component that gives you some upgrades for referring other free members.

If you're just getting started it might be worth checking out.