
Free newsletter tools are awesome…until they quietly start costing you growth. That pricing table up there isn’t just about dollars, it’s about which business you’re actually building. Let’s use it as a roadmap so you know exactly when to squeeze the free plan—and exactly when flipping on paid will make you more money than it costs.
Stay on the free plan until you have a repeatable sending habit, a lead magnet that consistently adds new subs, and at least one clear way the list makes money (services, product, or sponsorships). The day you can point to a single email and say, “This brought in more than $33,” you graduate to paid. Not because you like software upgrades, but because the extra features turn every future email into a better‑targeted, better‑tracked sales asset.
ConvertKit uses the free Newsletter tier to remove signup friction and then nudges serious senders into Creator once they hit automation and smart recommendations limits.
ConvertKit positions the Pro tier as the moment businesses want advanced segmentation, newsletter referral systems, and ad audience syncing because that is when every extra 1% of optimization equals real revenue.