Overview
MailerLite and Substack represent two fundamentally different newsletter strategies. Substack is a free publishing network where discovery and simplicity are the draws. MailerLite is a paid email marketing platform where control and features are the value proposition. The choice comes down to what matters more: built-in audience growth or full ownership and flexibility.
The Cost Equation
Substack costs nothing upfront. You publish for free and only pay if you enable paid subscriptions (10% of revenue plus Stripe fees). MailerLite costs $73/month at 10,000 subscribers regardless of revenue.
The breakeven point is approximately $730/month in paid subscription revenue. Below that, Substack is cheaper. Above that, MailerLite saves money. At $3,000/month in newsletter revenue, you'd pay Substack $300 versus MailerLite's flat $73.
Discovery vs Control
Substack's greatest strength is its network. Recommendations from other writers, the Notes social feed, leaderboards, and the Substack app all drive organic subscriber growth. Many writers attribute thousands of subscribers to these discovery features.
MailerLite offers no discovery mechanism. Growth comes from your own efforts: landing pages, pop-ups, social media, and content marketing. You have full control but no built-in audience.
Design and Branding
MailerLite gives you complete design freedom with a visual drag-and-drop editor, custom templates, and full branding control. Your emails look exactly how you want.
Substack enforces a consistent, text-focused design. Customization is minimal. Your newsletter will always look like a Substack newsletter. For some writers, this simplicity is a feature. For brands wanting unique identity, it's a limitation.
Marketing Features
MailerLite is a proper email marketing platform. Automation workflows, A/B testing, segmentation, landing pages, and e-commerce integrations give you tools to grow and optimize. Substack has none of these. You write, you publish, it sends.
For SaaS Companies
Neither platform is ideal for SaaS. MailerLite lacks Stripe integration for subscription-aware messaging. Substack is purely a publishing platform. For SaaS companies wanting newsletter capabilities alongside product email and Stripe integration, consider Sequenzy at $49/month.
Use-case matchups
| Situation | Better fit | Why |
|---|---|---|
| You are starting a writer-led newsletter with no budget | Substack | Substack has no upfront platform fee and a built-in discovery network. |
| You want full design, automation, forms, landing pages, and list control | MailerLite | MailerLite is a full email marketing platform rather than a publishing network. |
| Paid subscription revenue is already meaningful | MailerLite | A flat monthly fee can beat Substack's 10% revenue share once revenue passes the breakeven point. |
| You rely on Substack Notes, recommendations, and app discovery | Substack | MailerLite has no built-in audience network. |
| You run SaaS and need newsletter plus product email | Sequenzy | Sequenzy is better suited to product and billing-triggered email than either newsletter-first option. |
Best Fit by Newsletter Business Model
Best newsletter platform for writers starting from zero
Substack is the better fit when the writer wants to publish quickly, avoid software fees, and lean on recommendations, Notes, and app discovery. The tradeoff is that growth depends partly on Substack's network, and paid revenue carries the platform's revenue share.
Best email marketing tool for owned-audience newsletters
MailerLite is the better fit when the newsletter is part of a broader owned-audience strategy. It gives the team more control over design, forms, landing pages, segmentation, and automation, which matters once the list is an asset beyond Substack posts.
Best email marketing tool for SaaS teams with a newsletter
Sequenzy is the better fit when the newsletter is only one channel in a product email program. If the same team also needs onboarding, billing-triggered messages, transactional email, and retention sequences, Substack is too publishing-specific and MailerLite is too general.
Pricing reality
Substack is free until paid subscription revenue exists, then the 10% revenue share becomes the meaningful cost. MailerLite charges a predictable platform fee regardless of newsletter revenue.
The breakeven point on this page is simple: around $730/month in paid newsletter revenue. Below that, Substack's no-upfront-cost model is attractive. Above that, MailerLite's fixed fee can be cheaper, provided you can replace Substack's discovery benefits.
Review signals
The MailerLite review highlights the moment a creator outgrows Substack's revenue share: stronger design control and automation can offset losing the network.
The Substack review highlights the opposite: recommendations, Notes, and network discovery can grow an audience from zero without paid marketing. That discovery value is hard for traditional email platforms to replicate.
Migration checklist
- Export subscribers, paid/free status, posts, publication settings, custom domain records, and unsubscribe data from Substack.
- Rebuild the newsletter design, signup forms, landing pages, and any welcome flows in MailerLite.
- If leaving Substack paid subscriptions, recreate payment, access, and subscriber-status logic with Stripe or another payment tool.
- Communicate the move to readers before changing publishing cadence or sender identity.
- Reconfigure SPF, DKIM, DMARC, custom domain, tracking links, and reply-to address.
- Keep Substack available until archives, subscriber exports, paid access, and redirects are verified.
Decision checklist
- Choose Substack if discovery, simplicity, and zero upfront cost matter most.
- Choose MailerLite if ownership, design control, automation, and avoiding revenue share matter more.
- Choose Sequenzy if the newsletter supports a SaaS product and must connect to product or Stripe events.
