Beehiiv vs Substack vs Mailchimp: Which Is Best?

beehiiv, Substack, and Mailchimp can all send a newsletter, but they are built around different businesses.

Substack starts with a writer and a publication. beehiiv starts with a newsletter operator who wants growth and monetization tools. Mailchimp starts with a business audience that may also need forms, segmentation, automation, and broader marketing campaigns.

The right choice is less about which editor feels nicest and more about what you are building around the email. This comparison uses six criteria: publishing, audience growth, monetization, marketing automation, design control, and pricing model. Official information was checked on August 31, 2026.

Quick verdict

Choose beehiiv when the newsletter is a growth product. Choose Substack when you want the shortest path from writing to a paid publication and community. Choose Mailchimp when the newsletter is one part of a wider marketing operation.

beehiiv: best for newsletter growth infrastructure

beehiiv combines newsletters with a hosted website, analytics, recommendations, segmentation, and monetization features. Its official pricing page lists a Launch plan for up to 2,500 subscribers, including newsletters, a website, campaign analytics, and the recommendation network.

Higher tiers add features such as the ad network and advanced website analytics. The Max tier expands publication limits, while Enterprise supports custom limits and dedicated IP options for large publishers.

beehiiv is the strongest choice when:

• subscriber growth is the primary operating metric;
• you want a publication site and newsletter in one system;
• recommendations or an ad network are part of the business model;
• a team will analyze and segment a growing audience.

It may be more platform than a solo writer needs on day one, and its most differentiated monetization features are not all part of the free tier.

Substack: best for individual writers and paid communities

Substack removes much of the setup required to start a publication. A writer can publish posts, email subscribers, add paid subscriptions, and interact with readers without assembling a separate website, payment system, and newsletter stack.

The cost model is different from a conventional email service. Substack’s official support page says the platform takes 10% of each paid transaction. Payment processing and billing fees also apply. That means publishing to a free audience has little software overhead, while platform cost rises directly with subscription revenue.

Substack is the strongest choice when:

• the author’s voice is the product;
• paid subscriptions are the central business model;
• speed and simplicity matter more than marketing-system depth;
• community discovery inside the Substack ecosystem is valuable.

The trade-off is control. A percentage-of-revenue model can become material for a large paid publication, and businesses needing sophisticated automation, brand systems, or campaign operations may want a different platform.

Mailchimp: best for broader business marketing

Mailchimp treats newsletters as one campaign type inside a wider marketing product. It supports contacts, forms, segmentation, templates, customer journeys, reporting, and adjacent marketing features.

The official pricing page showed a free plan for businesses with fewer than 250 contacts when reviewed. Paid Essentials, Standard, and Premium plans increase contact, send, support, and feature limits. Charges can change with contacts and email volume, so a growing list should be modeled at its expected future size.

Mailchimp is the strongest choice when:

• the newsletter supports a store, service, event program, or lead funnel;
• contacts need business segmentation rather than publication-only labels;
• marketing automations extend beyond new-post notifications;
• the organization wants a familiar general-purpose platform.

The trade-off is focus. A creator may find Mailchimp more complex than Substack, while a dedicated publisher may prefer beehiiv’s growth and monetization surfaces.

Which platform has the best pricing model?

There is no single cheapest model because each platform charges for a different source of value.

beehiiv

beehiiv uses subscriber limits and plan tiers. The free Launch plan covers up to 2,500 subscribers. Paid tiers unlock more growth, monetization, analytics, and publication features.

This model is predictable for a free newsletter, but the appropriate tier depends on which publishing features the business actually needs.

Substack

Substack is inexpensive before a publication earns paid revenue, then takes 10% of paid transactions plus payment-related fees. The economics are simple to calculate:

annual paid revenue × platform percentage + payment fees

That can be attractive when starting because fixed software cost is low. At scale, compare the revenue share with the fixed subscription cost and operational work of another platform.

Mailchimp

Mailchimp primarily scales with contacts, sends, and plan level. That makes sense for a business marketing database, but inactive contacts and higher campaign frequency can affect cost. Clean the audience and model the next contact tier before committing.

Which is best for automation?

Mailchimp offers the broadest marketing orientation of the three. It is built for business campaigns and customer journeys rather than only publishing a new post.

beehiiv provides newsletter automation and segmentation in a publishing context. It is useful for welcome sequences, audience growth, and publication operations without trying to become a full CRM.

Substack prioritizes publishing and reader relationships. Choose it for simplicity, not because you need the most configurable lifecycle engine.

If sophisticated event-driven automation is essential, none of these three should be selected without comparing a dedicated lifecycle platform such as Customer.io, ActiveCampaign, or Loops.

Which is best for email design?

All three can produce functional newsletters. The decision changes when a brand needs more ambitious layouts, reusable creative systems, detailed visual review, or compatibility testing across Outlook, Gmail, mobile, and dark mode.

In that case, use a production layer such as Migma alongside the chosen audience platform. Migma can create visually editable, brand-aware email and run Email Preflight before the final artifact is exported or sent. The sending or publishing platform may still add wrappers, variables, and tracking, so always test the final message there.

For the underlying brand system, see Brand Memory for AI Email.

Migration questions to answer first

Before moving an existing newsletter, confirm:

1. Can you export subscribers, consent status, suppressions, segments, and paid-member data?
2. Which forms, welcome emails, automations, and referral links must be rebuilt?
3. Will historical web posts remain accessible and redirect correctly?
4. How will the new platform authenticate the sending domain?
5. What does the new cost look like at today’s free and paid audience size?
6. Can you send a controlled test to every important inbox and device?

Run a small migration first. Import permissioned contacts, rebuild one welcome path, and send one real issue before moving the whole audience.

Final recommendation

Choose beehiiv for a newsletter business designed around audience growth. Choose Substack for a writer-led paid publication with minimal setup. Choose Mailchimp when newsletters sit inside a broader marketing program.

If the platform choice is settled but the emails still look generic or break during review, create a Migma workspace to improve the production and compatibility layer without changing the audience strategy.

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