--- title: "Mailchimp vs Substack" summary: "Mailchimp is the legacy small-business marketing platform. Substack is the modern publication network. Different jobs despite both shipping emails." canonical: https://unlocksaas.com/vs/mailchimp-vs-substack updated: 2026-05-18 publisher: "Unlock SaaS" author: "Maryan" license: All rights reserved. Quotation with attribution permitted. --- # Mailchimp vs Substack — Honest Head-to-Head Comparison > Mailchimp is the legacy small-business marketing platform. Substack is the modern publication network. Different jobs despite both shipping emails. ## TL;DR Mailchimp and Substack both ship emails but solve fundamentally different jobs. Mailchimp is the legacy small-business marketing platform with newsletters as one capability alongside landing pages, basic CRM, and marketing automation. Substack is the publication network where writers monetize via paid subscriptions and benefit from the Substack discovery graph. For traditional small-business email marketing, Mailchimp. For writers building a publication with cross-discovery network effects, Substack. They barely compete despite the surface overlap. ## Best for - **Mailchimp is best for:** Small businesses, e-commerce operators, traditional marketing teams running email campaigns as one channel. - **Substack is best for:** Writers, journalists, essayists building publications with paid subscriptions and discovery via the Substack network. ## Pick Mailchimp if - You are a small business or e-commerce operator running marketing email as one channel among many. - You need landing pages, basic CRM, customer journey automation alongside email. - Your audience expects familiar marketing email aesthetics, not publication-style writing. ## Pick Substack if - You are a writer building a publication and want the Substack network to drive discovery. - You monetize primarily through paid subscriptions to your writing. - You value the writer-first publication aesthetic over marketing-email tooling. ## Dimension-by-dimension ### Primary job - **Mailchimp:** Small-business marketing automation with email as one channel. - **Substack:** Writer-first publication platform with paid subscriptions. - **Verdict:** Different shapes; not directly comparable ### Pricing - **Mailchimp:** Free up to 500 contacts; paid tiers scale by audience from ~$13/mo (verified 2026-05-18). - **Substack:** Free for writers; Substack takes 10% of paid subscription revenue (verified 2026-05-18). - **Verdict:** Different shapes; not directly comparable ### Discovery network - **Mailchimp:** None — your audience is yours alone. - **Substack:** Strong — Substack Recommendations, Notes, and the Substack app drive cross-publication discovery. - **Verdict:** Substack wins ### Marketing automation breadth - **Mailchimp:** Mature — landing pages, basic CRM, customer journey automation. - **Substack:** None — Substack is publication-focused. - **Verdict:** Mailchimp wins ### Paid subscription monetization - **Mailchimp:** Limited; basic paid newsletter features. - **Substack:** Native — paid subscriptions are the core monetization model. - **Verdict:** Substack wins ### Writer-first aesthetic - **Mailchimp:** Marketing-email aesthetic; not optimized for long-form writing. - **Substack:** Writer-first; designed for essays, journalism, long-form publications. - **Verdict:** Substack wins ### Audience ownership - **Mailchimp:** You own the audience and the relationship. - **Substack:** You own the email list but Substack controls discovery, comments, and the app surface. - **Verdict:** Mailchimp wins ### Brand recognition - **Mailchimp:** Very high — Mailchimp is the canonical small-business email brand. - **Substack:** High — Substack is the canonical modern publication brand. - **Verdict:** Tied ## Honest take Mailchimp and Substack both ship emails but solve fundamentally different jobs. Mailchimp is the small-business marketing platform that happens to include newsletters; Substack is the writer-first publication network with paid subscription monetization built in. They appear in comparison searches because both contain 'newsletter' but the audiences barely overlap. For small business marketing, Mailchimp. For writer-built publications, Substack. The mistake is comparing them as if they served the same buyer. ## If you are an indie SaaS founder **Pick:** It depends If your indie SaaS uses email primarily for marketing automation alongside landing pages and customer journeys, Mailchimp (or modern alternatives like Customer.io). If you are building a content business or publication where the writing IS the product, Substack. Most indie SaaS founders should not be on either — modern SaaS email platforms (Loops, Resend with audiences, Kit) match the indie-SaaS workflow better than legacy Mailchimp or writer-focused Substack. ## FAQ ### Why does Substack take 10% of paid subscription revenue? Because Substack's value proposition includes the publication infrastructure plus the discovery network. The 10% revenue share is the rent for being inside the Substack ecosystem with cross-publication discovery and the unified app surface. Writers who do not value the discovery often migrate to Beehiiv, Kit, or self-hosted alternatives. ### Can Mailchimp host a writer-led publication? Workably for the email distribution part, awkwardly for the paid-subscription mechanics and writer-first aesthetic. Mailchimp lacks the publication-focused tooling that Substack provides natively. Writers who try Mailchimp typically miss the discovery network and paid-subscription depth. ### Should I leave Substack for Beehiiv or Kit? Depends on what you value. Substack's discovery network drives growth that Beehiiv or Kit cannot match through their own mechanics. Beehiiv's monetization stack (ads network, Boost) provides revenue streams Substack does not. Kit's marketing-email features matter for creators with product-launch sequences. The migration decision is about what revenue and audience-growth mechanisms matter most. ### What about Constant Contact or HubSpot as Mailchimp alternatives? Constant Contact is the older small-business email competitor with similar positioning to Mailchimp. HubSpot is the broader CRM and marketing automation platform that includes email as one feature among many. The Mailchimp vs Substack comparison is specifically about the legacy-marketing vs modern-publication framing; alternatives serve adjacent niches. ### What is the Brunson lens on Mailchimp vs Substack? Mailchimp owns the small-business marketing category by virtue of long-standing brand recognition. Substack is the New Opportunity move (writer-first publication with paid subscriptions and discovery network) that escapes the marketing-platform category entirely. Brunson lesson: when an incumbent owns a category, the challenger wins by claiming an adjacent category the incumbent cannot enter without abandoning its core identity. --- If you are building a SaaS that needs to win this kind of comparison, the Unlock SaaS Playbook runs the same lens against your own offer at https://unlocksaas.com/playbook-sales. The free diagnostic at https://unlocksaas.com/diagnostic is the first door. --- Canonical URL: https://unlocksaas.com/vs/mailchimp-vs-substack Publisher: Unlock SaaS (https://unlocksaas.com) Contact: maryan@unlocksaas.com