Four serious newsletter platforms compete for solo and indie founders in 2026. The free tiers are similar, the paid tiers are not, and the ceiling each one hits at scale is different. I've shipped newsletters on three of them; here is the honest version of which to pick by your actual goal.
The shortcut
- Under 1,000 subscribers, you just want to write: Buttondown.
- 1,000-10,000 subscribers, growth is the priority: Beehiiv.
- Selling courses or products to a list: Kit (ConvertKit).
- Distribution > everything else and you accept the cut: Substack.
Side by side
| Beehiiv | ConvertKit (Kit) | Substack | Buttondown | |
|---|---|---|---|---|
| Free tier | 2,500 subs | 10,000 subs (no automations) | Unlimited, free until paid subs | 100 subs |
| 1,000 subs cost | Free | $15/mo | Free | $9/mo |
| 10,000 subs cost | $42/mo | $79/mo | 10% of paid | $29/mo |
| Custom domain | Paid only | Paid only | Built-in | $9/mo plan |
| Paid subscriptions | Yes, 0% | Yes, Creator Pro | 10% + Stripe | Yes, 0% |
| Automations | Strong | Best in class | Limited | Limited |
| Growth tooling | Best in class | Strong (Creator Network) | Built-in network | Limited |
| API access | Yes, Pro+ | Yes | No | Yes, all plans |
| Markdown-native | No | No | No | Yes |
The four, in detail
Beehiiv is the strongest platform for founders building an audience as their primary growth strategy. The free tier covers 2,500 subscribers (the largest among real platforms). The growth tooling — Beehiiv Boosts marketplace, cross-publication recommendations, referral programs, a real ad network — is materially ahead of every competitor. Founder-led ownership (still independent in 2026). 50% Y1 affiliate commission is the highest in the category.
The trade-off versus ConvertKit is automation depth. Beehiiv's automations are good but ConvertKit's are noticeably more sophisticated for course launches and product funnels. If you're an indie author selling a paid book or course, ConvertKit edges Beehiiv. If you're growing a media-style newsletter, Beehiiv wins.
Kit (rebranded from ConvertKit in 2024) is the gold standard for creators who sell to their list. The visual automation builder is the deepest of the four. Free for 10,000 subscribers is now the most generous floor offer, though automations require the paid plan. Cash-paying affiliate program with recurring commission.
If your newsletter's purpose is to drive sales of a course, ebook, software, or service, this is the right tool. If you're growing a free-content audience first, Beehiiv's growth surface beats Kit's. The deeper the funnel, the more Kit's automation strength shows up.
Substack's pitch is built-in distribution: when someone subscribes to a similar Substack, your publication shows up in their feed and recommendation flow. For founders with no existing audience, this is real value. The cost is the 10% cut Substack takes when you charge for subscriptions, plus Stripe fees. On a $100K newsletter, that's $10K a year for distribution that may or may not be the cause of growth.
Use Substack when you have zero existing audience and want to leverage the platform's network. Switch to Beehiiv or Kit once you have 1,000+ paid subs and the 10% cut becomes a real number.
Buttondown is the indie's indie newsletter platform. Markdown-native (write in plain text), API on all plans, $9/mo flat for small lists. Founder-led, transparent, no growth gimmicks. The closest thing to a "just send my emails" platform that respects your time.
The ceiling is real: Buttondown is not where you build a 100K-subscriber media newsletter. The audience automation, the segmentation, the growth tooling all sit below the other three. But for "I write a weekly essay and want it delivered cleanly to 500 readers," Buttondown is the right answer. 30% recurring affiliate.
The decision tree
- Are you charging for subscriptions? Yes: Substack (zero-cost ramp) or Beehiiv (no cut). No: Beehiiv, Kit, or Buttondown.
- Are you growing from zero? Yes: Substack's discovery feed or Beehiiv's Boosts. No: any of the four.
- Is the newsletter a funnel for a paid product? Yes: Kit. No: Beehiiv or Buttondown.
- Do you write technical content or want markdown? Yes: Buttondown. No: any.
The hidden cost: switching
All four export subscribers cleanly. None export domain sending reputation. If you start on one platform and switch later, the new sending domain has to warm up; the first 1,000 emails through the new ESP often land in more spam folders. Recovery takes 14-21 days.
The implication: choose your platform once for the next 2-3 years if you can. The cost of switching is not the platform fee; it's a few weeks of degraded deliverability. See our switch guide for the warm-up playbook if you must migrate.
The cheapest path is the platform where you write the most. Free tiers are bait if they don't fit your writing pattern. If you're a markdown writer using Beehiiv's WYSIWYG editor, you've added 30 minutes per post to friction. Pick the workflow before you pick the price.
What I'd actually do
For The Drop (this site's newsletter), I run Beehiiv. Reasons:
- Free tier covers me for the foreseeable future at current growth rate.
- Boosts marketplace lets me grow via cross-newsletter recommendations.
- Cross-newsletter recommendations on signup form work without my intervention.
- Founder-led ownership: switching cost is real, so I prefer the platform less likely to PE-spike pricing.
If I were starting a paid newsletter from scratch with no existing audience, I'd start on Substack and migrate to Beehiiv after 1,000 paid subscribers. If I were running a courses-and-newsletter business, Kit. If I just wrote an essay every Saturday for fun, Buttondown.
Pricing maths, real
Three subscriber thresholds where pricing matters:
- 500 subs: Beehiiv free, Kit free (no automations), Substack free, Buttondown £9/mo. Pick by workflow, not price.
- 5,000 subs: Beehiiv £42, Kit £49, Substack 10% of paid, Buttondown £29. Beehiiv and Buttondown lead on price; Kit and Substack lead on features.
- 50,000 subs: Beehiiv £100, Kit £179, Buttondown £79, Substack 10% (could be $10K-$50K depending on paid mix). At this scale, take Substack's network OR Beehiiv's growth tooling, not both.
Where this fits
If you're picking a newsletter platform, you're probably also evaluating Loops (transactional email for SaaS, not newsletters) and Mailchimp (legacy). See our email rankings for the full landscape.
If you're switching from Mailchimp specifically, our Mailchimp to Beehiiv switch guide and Mailchimp to ConvertKit switch guide walk through the named gotchas.