Independent Research · Unvarnished Reviews
Unvarnished Reviews Research
The email marketing software category itself is growing steadily: Independent market research consistently places the "software" segment (as distinct from broader "email marketing" market definitions that include services and consulting) at roughly $1.9-$2.2 billion in 2025-2026, growing at a 10%-14% compound annual growth rate across multiple independent estimates, a reasonably tight, well-corroborated range compared to some adjacent software categories. Mailchimp remains the category's dominant incumbent by most measures, reported user counts around 13 million and revenue estimated around $1.35 billion (Intuit does not break out Mailchimp-specific revenue in its filings, so this figure is a third-party estimate, not an audited disclosure). The newer, creator-focused entrants are smaller but growing fast: Kit (formerly ConvertKit) reports over 600,000 creators and roughly $43-$46 million in bootstrapped annual revenue, and Beehiiv, still the youngest platform in this comparison, has grown quickly enough on newsletter-native positioning to be a default recommendation in creator circles despite the shortest track record of the five platforms compared here.
Mailchimp is the world's most recognized email marketing platform, and the platform whose post-acquisition trajectory has become a case study in what Cory Doctorow calls "enshittification." The clearest evidence is what paying customers are billed: Paid plans increased 30%-33% between 2022 and 2024, legacy account holders received an 11%-13% increase in April 2026 with minimal notice, and a Reddit thread titled "Thank you MailChimp for increasing pricing for the third time since 2023" appeared that same month and immediately drew references to enshittification. One user reported a $160 bill on a plan expected to cost $60; another described a bill doubling to $308/month to send to 7,000 subscribers. The free plan tells the same story in a more extreme form: It has shrunk from 2,000 contacts to 250 contacts since the 2021 acquisition, an 87.5% reduction in four years, with automation stripped entirely by mid-2025. Mailchimp doesn't disclose what share of its user base remains on that free tier, but at acquisition the company reported 13 million total users against roughly 2.4 million monthly active users, a gap consistent with a large free-tier population, so the free plan's cuts likely affect more people by headcount even though the paid-plan increases are what is costing customers money. The product is functional. The commercial trajectory is documented and consistent on both fronts: Mailchimp is moving upmarket and the small business and creator audience it was built for is no longer its priority.
Beehiiv is the newsletter-native platform built by former Morning Brew employees who understood from day one what newsletter operators need. Free plan to 2,500 subscribers with no feature restrictions. Built-in recommendation network, boosts monetization, referral programs, and a web publication layer that makes the newsletter a proper owned media property. Users consistently describe it as purpose-built for newsletter publishing in ways that Mailchimp and Constant Contact, both built for broadcast email marketing, are not.
Constant Contact is the small business email marketing standard, simpler than Mailchimp, more straightforward pricing, and a reputation for strong customer support. Its documented liability: It requires a phone call to cancel. In 2026, a platform that requires a phone call to cancel is making a deliberate commercial choice about subscriber retention that belongs in every evaluation.
Substack is the writer's platform, the simplest path from idea to paying subscribers, with a built-in discovery network of 20+ million readers. It takes 10% of subscription revenue. For writers who want to build a paid publication with minimal technical overhead and access to Substack's audience, it is the most appropriate choice. For businesses and brands that need data ownership, custom branding, and control over subscriber relationships, Substack's walled garden is a liability.
ConvertKit (now Kit) rebranded in late 2024 to reflect its evolution from an email tool into a broader creator operating system. Its free plan is the most generous in the category, 10,000 subscribers with unlimited sends and a built-in recommendation engine. For creators who want to earn money from newsletters through digital product sales and paid subscriptions, Kit's commerce integration is the strongest in the category.
Two kinds of product are compared here. Beehiiv, Substack and Kit are built to publish newsletters and sell subscriptions, while Mailchimp and Constant Contact are broadcast email marketing tools. The descriptions below come from the vendors' pages, so they show what the vendors say, not what independent testing found.
Beehiiv is a newsletter publishing platform. The Free plan allows 2,500 subscribers, 1 seat and 1 publication. Lite, at $49 a month billed yearly, allows 100,000 subscribers, 2 seats and 3 publications, and Pro, at $95 a month billed yearly, allows 250,000 subscribers, 10 seats and 10 publications. Enterprise is custom. Beehiiv lists unlimited sends and a 0% platform fee on paid subscriptions, though Stripe's processing fees still apply.
Mailchimp is a broadcast email marketing platform whose price follows the contact count. Free covers 250 contacts and 500 sends a month. Essentials, Standard and Premium allow monthly sends of 10, 12 and 15 times the contact limit. Essentials limits flows to 4 steps and 3 seats, Standard adds 5 seats, advanced segmentation and multivariate testing, and Premium, which starts at 10,000 contacts, adds unlimited seats and phone support.
Subscribed, unsubscribed and non-subscribed contacts all count toward the contact total, and going over the limit adds a charge instead of stopping service.
Constant Contact is a broadcast email marketing platform sold in Lite, Standard and Premium plans. Those plans include 1, 3 and unlimited users, and monthly sends of 10, 12 and 24 times the contact count, with overage at $2 per 1,000 sends. The plans page does not show prices by contact tier.
Substack is a publishing platform where writing is free at any subscriber count. On paid subscriptions it takes 10% of each payment, and Stripe adds 2.9% plus $0.30 per US card payment and 0.7% for recurring billing. A custom domain is a one-time $50. This report credits it with a discovery network of more than 20 million readers, a figure Substack's pricing page does not address.
Kit, formerly ConvertKit, is built for creators who sell digital products and subscriptions. The Free plan covers up to 10,000 subscribers with unlimited broadcasts, landing pages and forms. Creator adds unlimited automations and sequences, SMS marketing and subject-line testing. Pro adds Subscriber Signals, unlimited users, deliverability reporting and a referral system.
Kit's page lists a 0.6% fee on digital product and subscription sales, plus card processing at 3.5% plus $0.30, and a 23.5% fee on paid recommendations.
| Dimension | Beehiiv | Mailchimp | Constant Contact | Substack | Kit |
|---|---|---|---|---|---|
| Core idea | Newsletter publishing with built-in monetization | Broadcast email marketing priced by contacts | Broadcast email marketing with user-based tiers | Writer-first publishing with a discovery network | Creator email tool tied to product sales |
| Free plan | 2,500 subscribers | 250 contacts, 500 sends a month | None on the plans page reviewed | Publishing is free at any size | Up to 10,000 subscribers |
| What drives the bill | Plan tier and subscriber cap | Contact count, including unsubscribed | Contact count, with send limits | Share of paid-subscription revenue | Subscriber count |
| Fee on paid subscriptions | 0% platform fee; Stripe applies | No built-in paid subscriptions, per this report | No built-in paid subscriptions, per this report | 10% plus Stripe fees | 0.6% on digital product and subscription sales, plus card processing |
| Published pricing | Lite $49 and Pro $95 a month billed yearly | Essentials $13, Standard $20, Premium $350 a month (starting prices; 15% off at 10,000-plus contacts) | Lite $12, Standard $35, Premium $80 a month, or $10.20, $29.75 and $68 billed annually | No subscription fee | Creator $33 and Pro $66 a month at 1,000 subscribers |
The practical differences are three. Beehiiv, Substack and Kit are built around publishing and selling subscriptions, while Mailchimp and Constant Contact send campaigns to a contact list and, per this report, have no native paid-subscription product. Substack costs nothing until a writer charges for subscriptions and then takes a percentage with no ceiling, while Beehiiv and Kit charge by plan and take little or nothing from sales. Mailchimp and Constant Contact bills climb with the contact count, so list hygiene changes the price.
The prices shown are entry prices. Beehiiv, Mailchimp and Constant Contact do not publish a price at every list size on their pricing pages, while Kit does through a subscriber slider, so the pricing and TCO sections below flag which figures were not confirmed.
This section deserves its own heading because the pattern is documented, sourced, and relevant to every organization currently on Mailchimp.
Free plan contact limit reduction:
Automation stripped from free tier: Mid-2025. Previously, basic automation was available on free. Now requires paid Standard plan.
Paid plan price increases:
The hidden cost that compounds: Mailchimp counts unsubscribed, non-subscribed, and duplicate contacts toward your plan limit. An organization with 5,000 active subscribers and 3,000 unsubscribes is paying for 8,000 contacts unless they manually clean their list regularly. This is documented as the most common billing surprise in r/MailChimp threads.
Overage charges are automatic and opaque: When your contact list exceeds the plan limit mid-billing cycle, Mailchimp charges overage fees automatically. The overage rates are not published on the pricing page.
The Reddit community response: In April 2026, practitioners on r/MailChimp applied the enshittification framework to Mailchimp unprompted, the reference to a concept describing platforms that degrade their product to extract more value from captive users appeared organically in community threads. One user wrote: "Yeah, I was not too happy yesterday when Mailchimp told me they're jacking my bill up for the second time in a year, doubling my fee. I don't need any bullshit new features, I just need to send emails. And I'm not paying $308 a month to send to 7K subs."
| Platform | G2 | Capterra | TrustRadius |
|---|---|---|---|
| Mailchimp | 4.4 / 5 | 4.5 / 5 | Strong |
| Beehiiv | 4.6 / 5 | 4.6 / 5 | Positive |
| Constant Contact | 4.0 / 5 | 4.3 / 5 | Moderate |
| Substack | Not rated | Not rated | 6.8 / 10 |
| ConvertKit/Kit | 4.4 / 5 | 4.4 / 5 | Strong |
Mailchimp was built for small businesses sending broadcast marketing emails, promotions, newsletters, announcements. It remains functional for this use case. Its current commercial trajectory is optimized for enterprise customers, not the small businesses and creators who built its reputation.
Beehiiv is built for newsletter publishers, individuals and organizations for whom the newsletter is the primary content and audience relationship vehicle. Its recommendation network, boosts monetization, referral programs, and publication layer are purpose-built for newsletter growth in ways that general email marketing platforms are not.
Constant Contact is built for small businesses that want straightforward email marketing with phone support, less technically complex than Mailchimp, more hand-holding available, and simpler pricing. That phone support is a strength for getting help with campaigns and setup; it is a different thing entirely from the phone-only cancellation process documented below, which is a retention mechanism rather than a service one.
Substack is built for writers who want to publish and monetize written content with minimal technical overhead. Its 10% revenue cut is the price of its simplicity and distribution network.
ConvertKit/Kit is built for creators who sell digital products, courses, templates, memberships, and want their email list integrated with their commerce infrastructure.
Users consistently praise ease of use for basic campaigns, the drag-and-drop editor, and template variety. For organizations that need to send a straightforward promotional email to a list under 500 contacts, Mailchimp's interface is accessible and well-documented.
Integration depth, Mailchimp connects with Shopify, WooCommerce, Salesforce, and hundreds of other platforms, is cited as a strength for organizations with complex marketing stacks.
The billing model is the defining complaint. Documented above in detail. The combination of counting unsubscribed contacts, automatic overage charges, opaque overage rates, stripped free tier, and documented annual price increases since the 2021 Intuit acquisition has generated sustained community frustration across user ratings, and Reddit. "Expensive" appears in 81 user reviews. "Limited Features" in 58. The platform that was built for small businesses has been rebuilt for enterprise.
Custom domains cost $9/month extra, $108/year on top of the plan price for Mailchimp landing pages.
Pay-as-you-go credits expire after 12 months, previously they never expired. Policy changed.
The Classic Automation Builder was deprecated June 2025, and Mailchimp's current plan page limits Essentials to flows of up to 4 steps, while Standard and Premium allow up to 200 flows.
Users consistently praise the creator-focused approach, the all-in-one platform consolidation, and the recommendation network for audience growth.
The recommendation network, where Beehiiv newsletters recommend each other to new subscribers, is a distinctive audience growth mechanism that no competing platform matches. Practitioners report open rates of 40%-60% for engaged audiences, which reflects the newsletter-native audience quality.
The free plan to 2,500 subscribers with no feature restrictions is the most generous entry point in the category for newsletter publishers. No automation stripping, no template limitations, no Beehiiv branding removal fee.
As one user described: "the platform is easy to use and intuitive, but that's table stakes. What I truly value is that beehiiv is made by industry experts" who understand newsletter challenges.
Pricing steepens above the free tier. The Lite plan from $49/month and Pro plan from $95/month are expensive for small newsletters that have grown past 2,500 subscribers but haven't yet monetized significantly.
No drag-and-drop email builder, Beehiiv uses an inline text editor. For publishers who want heavily designed HTML emails with complex layouts, this is a limitation. For text-first newsletter publishers, it's irrelevant.
Focused on newsletters, not broadcast email marketing. Organizations that need ecommerce integrations, complex behavioral automation, or CRM-connected email sequences will find Beehiiv's focus on newsletter publishing limiting.
Reviewers consistently cite customer support quality and ease of use as Constant Contact's primary strengths. Phone support availability, increasingly rare in SaaS, is valued by small business owners who want human help.
Pricing is more predictable than Mailchimp, Constant Contact counts only active subscribers, not unsubscribed contacts. This eliminates the "paying for contacts who will never see your emails" complaint that dominates Mailchimp threads.
Requires a phone call to cancel. This is documented and deliberate: Calls must be placed during Eastern business hours, many accounts have no online cancel button at all, and independent reviewers and Trustpilot complaints alike describe hold times and a retention pitch during the call, with no automatic email confirmation once the cancellation is processed. In 2026, requiring a phone call to cancel a SaaS subscription is a commercial retention tactic, not a minor inconvenience; organizations that value frictionless subscription management should factor this in and confirm cancellation in writing before assuming it's complete.
User rating of 4.0/5 is the lowest in this comparison, reflecting an older platform that has not kept pace with modern newsletter and creator-focused features.
Pricing above competitors for equivalent feature sets at mid-list sizes.
Simplicity and built-in distribution are Substack's competitive advantages. The 20+ million reader discovery network means new publications can find audiences without external marketing. For writers who want to start publishing immediately without technical setup, Substack is the most frictionless path.
10% revenue cut on paid subscriptions, Substack takes 10% of every dollar subscribers pay. At $10/month with 1,000 paid subscribers, that's $12,000/year going to Substack. At scale, this becomes a significant cost that all alternatives avoid.
Customer support is "not present", Users consistently cite unresponsive support. Substack's community-driven support model means most issues require self-service resolution.
Data ownership concerns. Subscriber email addresses on Substack are exportable but the platform relationship creates dependency on Substack's continued operation and policies.
No API access, limits integration with external tools and automation platforms.
The free plan to 10,000 subscribers with unlimited sends is the most generous free tier in the category for high-volume senders. The built-in recommendation engine for cross-promotions is an effective audience growth tool. Commerce integration, selling digital products from the email platform, is the strongest in the comparison.
Revenue fee on commerce: Kit's pricing page lists 0.6% on digital product and subscription sales, plus card processing at 3.5% plus $0.30, and does not say the fee is limited to the free plan. At $50,000 in annual product revenue, that's $300/year to Kit, modest but worth noting.
Less newsletter-native than Beehiiv. Kit's web publication layer and newsletter-specific features are less mature than Beehiiv's purpose-built newsletter infrastructure.
Plan names and entry prices for Beehiiv, Mailchimp, Constant Contact and Kit were checked against vendor pages in October 2026, including Mailchimp's pricing page as supplied on October 19. That page shows starting prices only, so Mailchimp's $100 at 5,000 contacts and $135 at 10,000 are reported figures that Mailchimp's page does not let a reader confirm, because it has no contact-count selector. Kit's Creator and Pro prices at 10,000 subscribers and above were confirmed from Kit's pricing slider on October 19. Treat the 10,000-subscriber TCO figures as estimates until confirmed with each vendor.
| Plan | Price | Contacts | Key Limitation |
|---|---|---|---|
| Free | $0 | 250 contacts, 500 emails/month | No automation, no scheduling |
| Essentials | $13/month | 500 contacts | Flows limited to 4 steps; no generative AI |
| Standard | $20/month | 500 contacts | Up to 200 flows; generative AI included |
| Premium | $350/month, or $297.50 for the first 12 months with the 15% offer | Starts at 10,000 contacts | Unlimited seats and audiences, phone support |
Mailchimp's pricing page does not show prices by contact count, so the figures here are reported, not confirmed. Reported prices for Standard are $100 a month at 5,000 contacts and $135 at 10,000. Mailchimp counts unsubscribed contacts. Overage charges automatic and unpublished.
Correction: Beehiiv restructured its tiers effective October 1, 2026 (existing annual customers keep their price through the end of their term). Launch, Scale and Max are now Free, Lite and Pro. The table below reflects the current structure.
| Plan | Price | Subscribers |
|---|---|---|
| Free (formerly Launch) | $0 | Up to 2,500 |
| Lite (formerly Scale) | From $49/month on annual billing ($588/year); price varies with subscriber count | Up to 100,000 |
| Pro (formerly Max) | From $95/month on annual billing ($1,140/year) | Up to 250,000, adds beehiiv branding removal, 10 team seats and 10 publications |
| Enterprise | Custom | 100,000+, dedicated IP and SSO |
The October 2026 restructuring moves the entry paid tier up, from $43 to $49 a month on annual billing, while the top self-serve tier now reaches 250,000 subscribers at $95 a month, so Enterprise is no longer required at 100,000. Lite adds paid subscriptions with 0% platform fees, and Pro adds branding removal and more seats. Beehiiv's page shows these as starting prices for a small subscriber count, so confirm the rate at your list size.
| Plan | Price | Notes |
|---|---|---|
| Lite | $12/month | Basic email |
| Standard | $35/month | Automation, segmentation |
| Premium | $80/month | Advanced features |
| Plan | Price | Notes |
|---|---|---|
| Free to publish | $0 | Free newsletters unlimited |
| Paid subscriptions | 10% revenue cut | Substack takes 10% of all paid subscriptions |
| Plan | Price | Subscribers |
|---|---|---|
| Free | $0 | Up to 10,000 |
| Creator | $33/month, or $390/year, at 1,000 subscribers; $116/month, or $1,390 billed yearly, at 10,000; $158/month at 20,000; $566 at 105,000; $1,066 at 205,000; $1,566 at 305,000; $1,916 at 400,000 | 2 users, unlimited visual automations |
| Pro | $66/month at 1,000 subscribers; $158/month at 10,000, $225 at 20,000, $733 at 105,000, $1,316 at 205,000 and $2,166 at 400,000 at list price, with custom pricing above 500,000; the first-year promotion brings 10,000 to $119 a month ($1,418 billed) | Unlimited users, 5 subject-line A/B tests, priority support |
Modeled scenario: a newsletter at 10,000 subscribers, comparing base platform cost and, separately, the revenue-share cost if the operator monetizes with $10,000/year in paid subscription revenue.
| Platform | Annual Platform Cost | 3-Year Platform Total | Cost on $10,000/yr Paid Subscription Revenue |
|---|---|---|---|
| ConvertKit/Kit (Free, up to 10,000 subscribers) | $0 | $0 | About $60 (0.6% sales fee, plus card processing) |
| ConvertKit/Kit (Creator) | $1,390 ($116 a month, billed yearly) | $4,170 | About $60 (0.6% sales fee, plus card processing) |
| ConvertKit/Kit (Pro, list price) | $1,896 ($158 a month) | $5,688 | About $60 (0.6% sales fee, plus card processing) |
| Constant Contact (Standard) | $420 | $1,260 | N/A (no native paid-subscription feature) |
| Beehiiv (Lite, starting price) | $588 | $1,764 | $0 (no revenue fee) |
| Mailchimp (Standard, 10K contacts; price reported, not confirmed) | $1,620 | $4,860 | N/A (no native paid-subscription feature) |
| Substack | $0 | $0 | $1,000/year (10% revenue cut) |
For a publisher with no monetization plans, Substack and ConvertKit's free tiers are the lowest-cost options at this subscriber count. Once paid subscriptions enter the picture, the comparison inverts: Substack's 10% revenue cut means a newsletter earning $10,000/year in subscription revenue pays $1,000/year to Substack, against about $60 for Kit's 0.6% sales fee on the same revenue, with card processing extra on both. The breakeven point where a flat-fee platform beats Substack's revenue share falls well below most newsletters' realistic subscription revenue, worth calculating explicitly before choosing Substack for a newsletter with real monetization ambitions.
Set the price aside: How hard is each platform to set up, run and leave? The newsletter-native tools are simpler to operate, while Mailchimp and Constant Contact carry more billing and exit friction.
| Dimension | Mailchimp | Beehiiv | Constant Contact | Substack | Kit |
|---|---|---|---|---|---|
| Setup and learning | Accessible for basic campaigns; multi-step automation starts on Standard | Intuitive and newsletter-native; inline editor rather than drag-and-drop | Easy to use, with phone support for setup | Minimal technical setup | Built for creators selling products, with commerce built in |
| Contact and billing counting | Counts unsubscribed, non-subscribed and duplicate contacts; overage rates unpublished | Subscriber tiers with no revenue fee | Active subscribers only | Free to publish, 10% of paid revenue | Free to 10,000; 0.5% to 0.6% fee on commerce on the free plan |
| Integrations | Hundreds, including Shopify, WooCommerce and Salesforce | Focused on newsletters, limited for ecommerce and CRM sequences | Standard small-business set | No API access | Strong commerce integration |
| Leaving the platform | Pay-as-you-go credits expire after 12 months | Subscriber export and branding-removal option on Pro | Phone call required to cancel, in Eastern business hours | Exportable list, but audience and policies tie you to the platform | Remove the free-plan fee by upgrading to Creator |
Every finding below is independently documented and material enough to influence a purchasing decision.
Mailchimp
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Constant Contact and Substack
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Beehiiv and Kit
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1. Count your total contacts including unsubscribed, that's what Mailchimp bills you for
2. Model your contact count growth at 12 and 24 months, identify which tier you'll be in
3. Calculate cost at that tier, including the documented trend of annual increases
4. Compare against Beehiiv, Constant Contact, or Kit at the same contact volume
5. Verify whether you're on a legacy pre-2019 plan subject to the April 2026 increase
Design decides what you are buying. Mailchimp and Constant Contact are broadcast email marketing tools, Beehiiv is a newsletter publishing platform, Substack is a writer's platform with a built-in audience, and Kit is a creator platform with commerce built in.
Audience decides which one fits. Newsletter publishers fit Beehiiv, writers building a paid publication fit Substack, product-selling creators fit Kit, small businesses wanting phone support fit Constant Contact, and ecommerce-integrated senders fit Mailchimp.
Price depends on the plan and the unit. For a 10,000-subscriber newsletter over three years, Kit's free plan costs $0, Constant Contact Standard $1,260, Kit Creator $4,170, Beehiiv Lite from $1,764 Mailchimp Standard $4,860 and Kit Pro at list price $5,688, while Substack costs $0 in fees until paid revenue arrives, then $1,000 a year on every $10,000 earned.
Choose by situation:
The newsletter platform market has fractured into two distinct categories that buyers frequently confuse: broadcast email marketing (Mailchimp, Constant Contact) and newsletter publishing (Beehiiv, Substack, Kit). Choosing a broadcast email marketing platform for a newsletter is a category mismatch, and vice versa.
Mailchimp remains functional and widely integrated. Its post-Intuit trajectory, documented annual price increases, free plan degradation, automation stripping, and the Reddit community's enshittification framing, is the most important data point for any organization evaluating a multi-year commitment. The platform that was built for small businesses has been rebuilt for enterprise. If you are a small business or creator on Mailchimp, you are not the audience they are optimizing for.
Beehiiv is the most appropriate choice for newsletter publishers in 2026, purpose-built, free to 2,500 subscribers, with the recommendation network and monetization tools that general email marketing platforms don't offer. For independent research brands, media companies, and creator businesses where the newsletter is the primary audience relationship vehicle, Beehiiv is the strongest fit.
Constant Contact is the most appropriate choice for small businesses that value phone support and predictable pricing over newsletter-specific features.
Substack is the most appropriate choice for writers building paid publications who value distribution over data ownership.
ConvertKit/Kit is the most appropriate choice for creators who sell digital products and want the most generous free tier in the category.
Free trials and test-drives. Beehiiv has a free plan for up to 2,500 subscribers and a 14-day trial of its Pro plan with no card, which lifts some limits and leaves custom domains and paid subscriptions off until you upgrade. Kit has a free plan for up to 10,000 subscribers and a 14-day trial of Creator and Pro with no card. Mailchimp has a free plan capped at 250 contacts and 500 sends a month, with 14-day trials of Standard and Essentials that require a card. Constant Contact offers a 30-day free trial with no card and no ongoing free plan. Substack is free to start. Use these to test import, sending and billing on a real list before committing.