July 20, 2026·4 min read

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Substack vs Mailchimp (2026): Which Should You Use?

Substack vs Mailchimp compared for 2026 — publishing vs email marketing, monetization, automation, and which fits writers vs businesses.

Substack is a publishing-and-subscription platform; Mailchimp is an email marketing and automation platform — different jobs.
Substack monetizes through paid subscriptions; Mailchimp helps businesses market and sell products via email.
Mailchimp offers automation, segmentation, and templates Substack lacks; Substack offers simplicity and built-in discovery.
Writers building a paid newsletter fit Substack; businesses running email marketing fit Mailchimp.
Pricing differs: Substack takes a cut of subscriptions; Mailchimp charges by list size and features.

Comparing Substack and Mailchimp is a bit like comparing a bookstore to a marketing agency — both involve words and customers, but they do fundamentally different jobs. Substack is where you publish and get paid for a newsletter. Mailchimp is where you run email marketing for a business. Picking between them starts with knowing which job you actually have.

They Solve Different Problems

Substack is a publishing-and-subscription platform. Its purpose: help writers publish newsletters and earn through paid subscriptions. It's simple by design, handles subscription billing, and provides built-in discovery.

Mailchimp is an email marketing platform. Its purpose: help businesses market and sell — through campaigns, automated sequences, audience segmentation, and analytics. It's a marketing tool, not a publishing-monetization tool.

The clearest way to decide: is your newsletter the product, or does it support a product?

Newsletter is the product (readers pay for it) → Substack.
Newsletter supports a product (you sell something else) → Mailchimp.

Monetization

Substack — built-in paid subscriptions. Readers pay you directly for the newsletter; Substack takes a percentage. Monetization is native and requires no extra tools.
Mailchimp — no native paid-newsletter subscriptions. It drives revenue indirectly, by helping you market and sell products via email. You make money through email, not from the newsletter itself.

If charging readers for your writing is the goal, Substack is purpose-built for it. If email is a channel to sell other things, Mailchimp is built for that.

Features: Simplicity vs. Marketing Power

Mailchimp offers what marketers need and Substack deliberately lacks:

Automation and drip sequences (welcome series, sales funnels)
Audience segmentation and targeting
A/B testing
Templates and design flexibility
Integrations with e-commerce and CRM tools

Substack offers almost none of that — on purpose. Its value is simplicity: write, publish, get paid. For a writer, that's a feature. For a business running sophisticated marketing, it's a limitation.

"More powerful" only matters if you need the power. A paid newsletter doesn't need drip automation; an e-commerce business does.

Pricing

Substack — free to start, takes a percentage of subscription revenue (plus payment processing). Cost scales with earnings.
Mailchimp — tiered pricing based on list size and features, typically with a limited free tier and paid plans that grow with your contacts and needs.

Different models for different jobs: Substack's cost is tied to what you earn from readers; Mailchimp's is tied to how many people you email and which features you use.

Which Should You Choose?

Choose Substack if:

Your newsletter is the product and you want readers to pay for it
You want simplicity and built-in subscription billing
You value discovery through Substack's network
You don't need marketing automation

Choose Mailchimp if:

You run email marketing to sell products or services
You need automation, segmentation, and campaigns
Your email supports a business rather than being the product
You want deep control over design and targeting

Consider both if: you run a business (Mailchimp for marketing) and a paid content product (Substack). They're not mutually exclusive — they do different jobs.

For writers specifically, also compare the closer alternatives in our best newsletter platforms and Substack vs ConvertKit guides.

Content That Actually Works

Whichever tool fits, success comes from writing what your audience genuinely wants. Research it before you commit: PainPointMap scans the communities where your target readers gather and surfaces the questions and pain points they raise most — topics with built-in demand. See how to find a Substack niche.

Frequently Asked Questions

What is the difference between Substack and Mailchimp?

They solve different problems. Substack is built for writers to publish newsletters and earn from paid subscriptions, with a simple, publishing-first design. Mailchimp is an email marketing platform built for businesses to run campaigns, automations, and audience segmentation to market and sell products. Substack is about publishing and subscriptions; Mailchimp is about marketing automation. Choosing between them is really choosing which job you need done.

Is Substack or Mailchimp better for a newsletter?

For a content newsletter you want to monetize through paid subscriptions, Substack is better — it is purpose-built for that, simple, and includes subscription billing and discovery. For a newsletter that supports a business (promoting products, nurturing leads, automated sequences), Mailchimp is better because of its automation and segmentation. The question is whether your newsletter IS the product (Substack) or SUPPORTS a product (Mailchimp).

Can you make money with Mailchimp like Substack?

Not the same way. Substack has built-in paid subscriptions — readers pay you directly for your newsletter. Mailchimp has no native paid-subscription product for newsletters; instead, it helps businesses drive revenue by marketing and selling products via email. If your goal is charging readers for the newsletter itself, Substack is the fit. If your goal is using email to sell other products, Mailchimp is built for that.

Is Mailchimp more powerful than Substack?

In terms of email marketing features, yes — Mailchimp offers automation, segmentation, A/B testing, templates, and integrations that Substack deliberately omits for simplicity. But "more powerful" only matters if you need those features. For a writer who just wants to publish and get paid, Substack's simplicity is an advantage, not a limitation. Mailchimp's power suits businesses running sophisticated email marketing; it is overkill for a simple paid newsletter.

Should a small business use Substack or Mailchimp?

A small business running email marketing — promoting products, automated welcome and sales sequences, segmented campaigns — should use Mailchimp or a similar email marketing tool. A small business (or creator) whose newsletter itself is the product, monetized by paid subscriptions, fits Substack better. Some businesses use both: Mailchimp for marketing automation and a Substack or similar for a subscription content product.

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Jordan Reyes

Research Writer, PainPointMap

Writes about Reddit market research, idea validation, and finding product opportunities worth building. Covers the niche and industry research guides on the blog.