Substack Alternatives for a Paid Newsletter: How to Choose Between Substack and Kit

You want readers to pay you directly for your writing. That part is settled. The question that stalls most creators is where to run the paid newsletter — and the two names that dominate every “Substack alternatives” search are Substack itself and Kit (formerly ConvertKit).

The decision matters more than it looks. The platform you pick determines how much of your subscription revenue you keep, whether you can automate onboarding and win-back emails, how easily you can leave later, and whether you get any built-in discovery to grow. Switching platforms after you have hundreds of paying subscribers is possible, but it is disruptive enough that most people avoid it for years — so it pays to choose deliberately now.

This guide walks through the decision step by step: how each platform charges you, what you get for it, and a simple framework for picking based on where your audience will actually come from. By the end you should know which platform fits your situation — not which one is “best” in the abstract.

Table of contents

• How the two models differ
• Step 1: Understand the two business models
• Step 2: Compare the fee structures against your revenue plan
• Step 3: Decide where your growth will come from
• Step 4: Check the features your paid tier actually needs
• Step 5: Plan your exit before you enter
• Side-by-side comparison table
• Common mistakes and user-reported issues
• FAQ
• Conclusion
• Sources

Step 1: Understand the two business models

Before comparing features, understand what each company is selling you, because it explains everything else.

1. Substack is a publishing platform with payments built in. You get a hosted publication, a post editor, podcast and video hosting, community features, and paid subscriptions you can switch on “in just a few minutes,” as Substack’s own materials put it. It is free to use until you charge readers; Substack makes money by taking a cut of your paid revenue. Writers keep 90% of subscription revenue, minus credit card processing fees — meaning Substack’s platform fee is 10% of everything your paid list generates, forever.

1. Kit is an email marketing platform for creators with monetization attached. You get an email system — forms, landing pages, broadcasts, tagging, visual automations — plus paid newsletter functionality, digital product sales, paid recommendations, and sponsorship matching. Kit charges a flat monthly plan fee instead of a revenue share, with a transaction fee of 3.5% + 30¢ on paid newsletter subscriptions and digital product sales. Its free Newsletter plan supports up to 10,000 subscribers, with paid Creator and Pro tiers unlocking unlimited automations, sequences, and advanced analytics.

The practical difference: Substack scales its cost with your success; Kit’s cost is mostly fixed regardless of how much you earn.

Step 2: Compare the fee structures against your revenue plan

This is the step most people skip, and it is the one with the biggest long-term consequences.

1. Write down a 12-month revenue guess. Even a rough one: number of paid subscribers you think you can reach, times your planned monthly price, times 12.

1. Apply Substack’s model. Take 10% off the top for the platform, then payment processing on each transaction. On a small list this is trivial — if you earn very little, you pay very little, which is exactly why Substack is the lower-risk starting point.

1. Apply Kit’s model. A flat plan fee (check current pricing on Kit’s site — plans change) plus 3.5% + 30¢ per paid transaction. Kit’s own comparison page illustrates the gap at scale: on a five-figure monthly revenue, the difference between a 10% cut and its transaction fee amounts to hundreds of dollars per month retained.

1. Find your crossover point. The pattern that emerges from every honest comparison: at low or zero paid revenue, Substack’s free-until-you-earn model is cheaper. As recurring subscription revenue grows, a flat fee plus ~3.5% beats a permanent 10% share, and the gap widens every month. If you are confident you will build meaningful paid revenue, the revenue-share model becomes the most expensive line item in your business.

No income promises here — most newsletters earn modestly, and plenty earn nothing. The point is to price both models against your plan, not against someone else’s success story.

Step 3: Decide where your growth will come from

Fees only matter if you have subscribers. The platforms grow your list in very different ways.

1. Substack has a discovery network. Recommendations between publications, the Notes feed, and reader-app browsing send real subscribers to writers inside the ecosystem. Independent comparisons consistently flag this network effect as Substack’s strongest advantage — if you have no existing audience, it is the closest thing to built-in distribution.

1. Kit grows through your own funnels. Landing pages, embedded forms on your website, lead magnets delivered by automated sequences, and Kit’s Creator Network recommendations. This rewards creators who already have traffic — a blog, a YouTube channel, a podcast, social followings — and want to convert it into an owned list.

1. Be honest about which one describes you. If your entire growth plan is “publish good writing and hope,” Substack’s network gives you a nonzero chance of being found. If you have any existing audience or content engine, Kit’s tooling converts it more deliberately.

Step 4: Check the features your paid tier actually needs

Run through this checklist against your actual plans:

• Automation: Do you want a welcome sequence for new free subscribers, an automated pitch series that upsells them to paid, or win-back emails? Kit is built around this — visual automations, click-based triggers, unlimited sequences on paid plans. Substack, per independent reviews, offers essentially no automation or segmentation; you publish, and everyone gets it.
• Segmentation: Selling to segments (e.g., only free subscribers who clicked a pricing link) requires tagging. Kit has it; Substack does not.
• Multiple income streams: Kit supports digital products, paid recommendations, and sponsorship matching alongside paid newsletters. Substack is focused on subscriptions.
• Simplicity: Substack wins if you want to write and hit publish with zero setup. Kit’s power comes with a real learning curve.
• Design: Both are constrained — reviewers note Substack’s “very limited customization” and also critique Kit’s design flexibility. Neither is a website builder; don’t pick on aesthetics.

Step 5: Plan your exit before you enter

1. Confirm list portability. Both platforms let you export your subscriber list. Your email list is the asset — verify export before committing.
2. Know that paid subscriptions are the sticky part. Moving active paid subscriptions between platforms involves Stripe migration and subscriber communication. It is doable but disruptive, which is why the platform choice deserves this much thought.
3. Use migration support if switching. Kit offers free migrations from Substack on its paid plans, handling subscriber import and content transfer — relevant if you start on Substack and outgrow the 10% cut later.

Substack vs Kit: side by side

Factor	Substack	Kit (ConvertKit)
Cost model	Free until paid; 10% of paid revenue + card fees	Flat plan fee; free plan up to 10,000 subscribers
Paid newsletter fee	10% platform cut, ongoing	3.5% + 30¢ per transaction
Automation & sequences	None to minimal	Core strength; visual builder, unlimited on paid plans
Segmentation/tagging	Not available	Full tagging and segments
Built-in discovery	Strong (recommendations, Notes, app)	Creator Network + paid recommendations; weaker than Substack’s
Other monetization	Subscriptions-focused	Digital products, sponsorships, paid recommendations
Setup effort	Minutes, zero tech knowledge	Real learning curve
Best for	Writers starting from zero audience	Creators with existing traffic or funnel plans

Common mistakes and user-reported issues

• Choosing on fees alone with no audience. A 10% cut of zero is zero. If Substack’s network is your only realistic growth channel, the fee is the cost of distribution.
• Underestimating the 10% at scale. Users who grew on Substack report the platform cut becoming their single largest business expense — the most common reason “Substack alternatives” gets searched at all.
• Expecting automation on Substack. Reviewers and users consistently report there is no meaningful automation or segmentation; creators who need onboarding funnels end up running a second email tool alongside it, paying twice.
• Expecting Substack-style discovery on Kit. Users switching from Substack report that growth slows if they relied on Notes and recommendations; Kit assumes you bring your own traffic.
• Ignoring transaction fees on “free” plans. Kit’s free plan still applies the 3.5% + 30¢ transaction fee to paid products and subscriptions — read the pricing page carefully.

FAQ

Can I start a paid newsletter for free? On Substack, yes — you pay nothing until readers pay you, then 10% plus card fees. Kit’s Newsletter plan is free up to 10,000 subscribers, with transaction fees applying when you sell paid subscriptions.

Is Substack’s 10% fee worth it? It buys you the discovery network, zero setup, and no fixed costs. Early on, that trade often makes sense. Once paid revenue is meaningful and growth comes from outside Substack, the math usually stops working in its favor.

Can I move from Substack to Kit later? Yes. Both platforms allow subscriber export, and Kit offers free migration support from Substack on its paid plans. Migrating active paid subscriptions takes coordination (Stripe and subscriber communication), so plan it rather than improvising.

Which platform is better for deliverability? Both are established senders. Deliverability depends heavily on your own list hygiene and engagement; neither platform is a magic fix for a cold, unengaged list.

Do I need Kit’s paid plan to run a paid newsletter? Kit’s monetization features are available with transaction fees on all plans, but automation — the main reason to choose Kit — is limited on the free plan. Check the current plan comparison on Kit’s pricing page.

Conclusion: the best Substack alternative for your paid newsletter

The honest answer has two branches. If you are starting from zero audience and want the simplest possible path to your first paying readers, Substack’s free-until-you-earn model and discovery network are a reasonable place to begin — just go in knowing 10% of your revenue is the permanent price.

If you already have any audience — a blog, a channel, social followings — or you know you want automation, segmentation, and multiple income streams, Kit is the stronger long-term home for a paid newsletter. You keep more of every subscription, you can build the funnels that actually convert free readers into paid ones, and you own the machine end to end. The free plan up to 10,000 subscribers means you can test it without commitment.

Try Kit free and see if it fits your paid newsletter plan →