Monthly SaaS vs Revenue Share

The pricing model shapes the whole product strategy. Beehiiv and ConvertKit make money when a creator keeps paying for software every month, so they are pushed to build tools that help creators own their audience, send better emails, and add monetization without giving up a revenue share. Substack makes more when a writer converts readers into paid subscriptions, so its economics naturally favor a tighter publishing and payments stack.

• In practice, SaaS pricing means a creator pays for the tool like any other software bill, often based on subscriber count or plan tier. That is why Beehiiv and ConvertKit compete on referral programs, ad tools, automations, and customization, because those features help justify a fixed monthly fee even before a writer has meaningful paid subscription revenue.
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• Substack’s take rate creates a different bargain. It is easier to start, because a writer can launch with little upfront cost, but as subscription revenue grows the platform captures more of the upside. That tradeoff is what makes Beehiiv and ConvertKit feel more like creator infrastructure, while Substack feels more like a managed publishing network.
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• The lines are now blurring. Beehiiv, which started as pure newsletter SaaS, now gets about a third of revenue from its ad network and creator ad marketplace, while Substack has moved toward ad products to retain top writers. The market is shifting from simple pricing differences toward who can deliver the most creator earnings on top of the core software.
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Going forward, newsletter platforms will look more alike on the surface and more different in where the money comes from. The winners will be the ones that combine owned audience tools with strong monetization rails, while still letting successful creators keep enough of their upside to stay loyal as their businesses scale.