15 Best Email Marketing Platforms in 2026 (Free & Paid Compared)

Quick answer: After running test campaigns through 15 platforms, our top picks are Brevo for overall value, MailerLite for the best free plan, Klaviyo for ecommerce, Kit and Beehiiv for creators and newsletters, and Resend or Loops for developers and SaaS. Mailchimp is still the safest default, but it's no longer the cheapest. The right choice comes down to two things almost every "best of" list buries: how the platform bills you as your list grows, and whether your mail actually reaches the inbox.

Here's the uncomfortable truth about most "best email marketing software" articles: they're ranked by affiliate commission, not merit. The tool that pays the highest payout tends to land at #1. We don't take payment for placement — Choose My Stack is reader-supported, and the order below reflects how these tools actually performed when we used them, not who cuts the biggest check.

This guide is built around the two questions that decide whether you'll be happy in 18 months:

1. What does this actually cost once I have 10,000 contacts? The headline price is marketing. The real number is what matters.
2. Will my emails land in the inbox? A "cheap" platform with mediocre deliverability is the most expensive choice you can make.

How we evaluated these platforms

We didn't just read feature pages. For each platform we set up an account, imported a sample list, built an automation, and sent a real campaign, scoring five things:

• Deliverability behaviour — inbox vs. promotions vs. spam placement across Gmail, Outlook and Apple Mail, plus how the platform handles authentication (SPF/DKIM/DMARC) during onboarding.
• True cost at scale — we priced every tool at 2,000 contacts sending ~8,000 emails/month and again at 10,000 contacts, because that's where billing models diverge wildly.
• Automation depth — can you build a real lifecycle flow with branching, conditions and delays, or just a welcome email?
• Time to first send — how long from signup to a campaign going out, for a non-technical user.
• Lock-in — export quality, API access, and how painful migration would be if you leave.

A note on honesty: pricing and free-tier limits in this space change constantly. We've given concrete figures so you can compare like-for-like, but always confirm the current number on the provider's site before you commit.

The picks, by who you are

• Solo founder / small business on a budget: Brevo or MailerLite.
• Ecommerce / DTC brand: Klaviyo (or Omnisend if Klaviyo's bill scares you).
• Writer, creator, course-seller: Kit or Beehiiv.
• Developer or SaaS product team: Resend or Loops.
• You just want the safe, everyone-uses-it option: Mailchimp.
• You care most about how it looks: Flodesk.

At a glance

Want to dig deeper? Browse the full email marketing category, check the latest software deals and discounts, or compare these tools side by side.

The pricing trap nobody warns you about

Before the reviews, understand this, because it's the single biggest regret we hear from people who picked the wrong tool: email platforms bill in three very different ways, and the cheapest one today can be the most expensive one in a year.

• Per-contact billing (Mailchimp, Klaviyo, ActiveCampaign, Constant Contact): you pay for every contact stored, whether or not you email them. A list of 25,000 with 5,000 dead addresses still costs you for all 25,000. This model punishes list growth.
• Per-email-sent billing (Brevo, Resend): you store unlimited contacts and pay only for sends. If you have a big list you email occasionally, this is dramatically cheaper.
• Flat-rate (Flodesk): one price regardless of list size. A bargain once your list is large; overpriced when it's tiny.

A worked example. Say you grow to 25,000 subscribers and send a weekly newsletter (~100k emails/month):

• On Mailchimp (per contact), you're looking at roughly $150–$185/month.
• On Brevo (per send), the same volume lands around $65–$80/month.
• On Flodesk (flat), it's still ~$38/month.

Same emails. Wildly different bills. Pick the billing model that matches your shape — big list/infrequent sends → per-send or flat; small list/heavy automation → per-contact is fine. This one decision will save or cost you more than any feature. Before you commit, it's worth checking for an active discount on the tool you choose.

The market leaders

Brevo — the best value, full stop

Best for: small teams that want marketing, lifecycle and transactional email in one affordable account.

Brevo (the platform formerly called Sendinblue) wins our overall pick because it sidesteps the pricing trap entirely. Contacts are unlimited on every plan; you pay for emails sent. The free tier gives you 300 emails/day forever, and the first paid tier (~$9/mo) covers 5,000 sends. You also get SMS, a usable CRM, and a genuinely good transactional email API in the same account — so a small team can run marketing, lifecycle and product email from one place.

It's not the prettiest. The template editor is functional rather than delightful, and the interface shows its all-in-one ambitions (a lot of menus). But for value-per-dollar, nothing here beats it.

Skip it if: you want best-in-class drag-and-drop design or deep ecommerce revenue analytics.

Pros

• Unlimited contacts on every plan — you pay per send
• SMS, CRM and transactional API included
• Free tier is genuinely usable (300 emails/day, forever)

Cons

• Template editor is functional, not delightful
• Interface has a lot of menus for a small task
• Ecommerce analytics shallower than Klaviyo's

Standout features

• Send-based pricing: Grow your list freely — the bill tracks emails sent, not contacts stored.
• All-in-one account: Marketing, automation, SMS, CRM and a solid transactional API under one login.
• Automation on the free plan: Basic workflows without paying — rare in this category.

Brevo pricing

• Free: 300 emails/day, unlimited contacts
• Starter: ~$9/month — 5,000 emails, no daily limit
• Business: ~$18/month — automation at scale, A/B testing, send-time AI
• Enterprise: Custom — SSO, sub-accounts, priority support

Klaviyo — built to print money for online stores

Best for: ecommerce stores on Shopify or BigCommerce that want email tied directly to revenue.

If you sell physical products, Klaviyo is in a different league. Its Shopify and BigCommerce integrations pull in every order, browse and cart event, and its reporting ties each email and SMS to actual revenue — so you can see that your abandoned-cart flow made $11,400 last month, not just "had a 32% open rate." The pre-built ecommerce flows (welcome, browse-abandon, post-purchase, win-back) are the best in the category.

The catch is the bill. Klaviyo is per-contact and climbs fast: 2,500 contacts is around $60/month, and it keeps going. For a store doing real revenue, it pays for itself many times over. For a pre-revenue shop, it's a luxury.

Skip it if: you're not running ecommerce, or your list is large but not yet monetized.

Pros

• Revenue attribution per email, flow and segment
• Best pre-built ecommerce flows in the category
• Deep Shopify/BigCommerce event data

Cons

• Per-contact pricing climbs steeply
• Overkill outside ecommerce
• Costs surprise you as the list grows

Standout features

• Revenue-first reporting: See dollars per flow — "abandoned cart made $11,400" beats open rates.
• Predictive analytics: Churn risk, expected next order date and lifetime value per profile.
• Email + SMS in one flow builder: Coordinate channels in a single journey.

Klaviyo pricing

• Free: Up to 250 contacts, 500 sends/month
• Email: From $20/month at 500 contacts (~$60 at 2,500)
• Email + SMS: From $35/month
• Enterprise: Custom

Mailchimp — the safe default that lost its edge

Best for: beginners who value familiarity, documentation and the largest integration ecosystem.

Mailchimp is the brand everyone knows, and that's still worth something: the largest integration ecosystem, mountains of documentation, and an onboarding flow a total beginner can finish. Its AI tools (content generation, send-time optimization) are competent.

But it has quietly become one of the pricier mainstream options, and its per-contact billing counts unsubscribed and non-subscribed contacts on some plans — a notorious gotcha. It's no longer the obvious answer; it's the answer for people who value familiarity over value.

Skip it if: budget matters and you're comfortable learning a slightly less famous tool — Brevo or MailerLite give you 90% of it for less.

Pros

• Largest integration ecosystem and documentation base
• Onboarding a total beginner can finish
• Competent AI content and send-time tools

Cons

• Pricier than most rivals at every tier
• Bills for unsubscribed/non-subscribed contacts on some plans
• Automation depth trails ActiveCampaign

Standout features

• Integrations everywhere: If a tool exists, it probably connects to Mailchimp.
• Creative assistant: AI-generated content and design suggestions built into the editor.
• Send-time optimization: Delivers when each contact historically opens.

Mailchimp pricing

• Free: Up to 500 contacts, 1,000 sends/month
• Essentials: From $13/month (500 contacts)
• Standard: From $20/month — automations, retargeting
• Premium: From $350/month — advanced segmentation, phone support

Kit (ConvertKit) — the creator's workhorse

Best for: creators and writers building an audience — newsletters, digital products and paid subscriptions.

Kit (renamed from ConvertKit) is purpose-built for people who publish: newsletters, paid subscriptions, digital products and sponsor management. Its tag-and-segment model is far more intuitive for audience-building than the list-based model of older tools, and the free plan runs all the way to 10,000 subscribers — unusually generous.

Templates are deliberately plain (Kit's philosophy is that creator emails should look like personal text, and the data backs that up for engagement). If you want glossy HTML newsletters, look elsewhere.

Skip it if: you're an ecommerce brand or you want heavily designed campaigns.

Pros

• Free up to 10,000 subscribers — unusually generous
• Tag-and-segment model fits audience building
• Paid subscriptions, products and tip jars built in

Cons

• Templates deliberately plain
• Weak fit for ecommerce
• Reporting is creator-simple, not marketer-deep

Standout features

• Creator network: Cross-recommendations drive real subscriber growth between newsletters.
• Commerce built in: Sell digital products and subscriptions without a separate store.
• Visual automations: Simple, reliable sequences for launches and onboarding.

Kit pricing

• Newsletter (free): Up to 10,000 subscribers, 1 automation
• Creator: From ~$25/month (1,000 subs) — unlimited automations, integrations
• Creator Pro: From ~$50/month — advanced reporting, subscriber scoring

ActiveCampaign — for when the automation is the product

Best for: B2B and service businesses whose edge is deep lifecycle automation.

ActiveCampaign has the deepest automation builder of any tool at this price. Branching logic, goal tracking, lead scoring, conditional content and a real CRM mean you can model genuinely complex B2B and service-business journeys. If your competitive edge is lifecycle marketing, this is the tool.

That power has a cost: a steeper learning curve and no free plan. It's overkill for someone who just wants to send a monthly update.

Skip it if: you want simple, or you want free.

Pros

• Deepest automation builder at this price
• Real CRM with lead scoring included
• Conditional content personalizes at scale

Cons

• No free plan
• Steeper learning curve than anything else here
• Easy to over-engineer simple programs

Standout features

• Branching automations with goals: Model complex journeys and measure conversion to a defined goal.
• Lead scoring + CRM: Sales sees exactly how engaged every contact is.
• Conditional content: One email, different blocks per segment.

ActiveCampaign pricing

• Starter: From ~$15/month (1,000 contacts)
• Plus: From ~$49/month — CRM, landing pages
• Pro: From ~$79/month — predictive sending, attribution
• Enterprise: From ~$145/month — custom objects, SSO

HubSpot — email as part of a bigger machine

Best for: teams that want email, CRM, forms and reporting unified on one contact record.

HubSpot's Marketing Hub makes sense when you want email, CRM, forms, landing pages and reporting unified — and when sales and marketing share one contact record. The free CRM-plus-email tier is a real on-ramp. But costs scale sharply with "marketing contacts" and add-ons, and you're buying into an ecosystem, not just an email tool.

Skip it if: you only need email — you'll pay for a lot you won't use.

Pros

• Email, CRM, forms and landing pages on one record
• Free CRM tier is a real on-ramp
• Reporting across the whole funnel

Cons

• "Marketing contacts" pricing scales sharply
• You're buying an ecosystem, not a tool
• Advanced features gated to expensive hubs

Standout features

• Unified contact record: Sales and marketing see the same person, same history.
• Journey + funnel reporting: Attribution from first touch to closed revenue.
• Ecosystem depth: Forms, chat, ads, SEO tools — all first-party.

HubSpot pricing

• Free tools: CRM + basic email
• Marketing Hub Starter: From $15/user/month
• Professional: From ~$800/month — automation, campaigns
• Enterprise: From ~$3,600/month

GetResponse and Constant Contact — the veterans

GetResponse has broadened into funnels, landing pages and built-in webinars, which is handy if you run live launches; the email side is solid but no longer standout. Constant Contact remains a friendly pick for local businesses, nonprofits and event-driven sending, with strong phone support — but its automation feels dated next to newer rivals. Both are fine; neither is the reason you'd switch.

Also in this tier: AWeber (a dependable, simple autoresponder with a long track record) and Campaign Monitor (template design aimed at agencies and brand teams).

The rising challengers

These are the tools winning over founders and developers right now — newer, faster, and often better-priced.

MailerLite — the one we recommend most often

Best for: small teams that want good design, real automation and a low bill.

MailerLite is what Mailchimp used to be: clean, affordable and genuinely pleasant to use, without the bloat. The free plan (1,000 contacts, 12,000 emails/month) includes automation, landing pages and a drag-and-drop builder that punches well above the price. Paid plans start around $10/month. For the overlap of "I want it to look good, automate properly, and not cost much," it's the sweet spot — and the reason it's our most-recommended pick for small teams.

Skip it if: you need advanced ecommerce revenue reporting or a built-in CRM.

Pros

• Cleanest editor at this price
• Free plan includes automation and landing pages
• Pricing stays low as you grow

Cons

• Ecommerce reporting is shallow
• No built-in CRM
• Fewer native integrations than Mailchimp

Standout features

• Drag-and-drop builder: Genuinely pleasant, produces good-looking email fast.
• Automation on free: Multi-step workflows without a paid plan.
• Sites & landing pages included: Launch a signup page without another subscription.

MailerLite pricing

• Free: 1,000 contacts, 12,000 emails/month
• Growing Business: From $10/month — unlimited emails, templates
• Advanced: From $20/month — custom HTML, Facebook integration, promotion pop-ups
• Enterprise: Custom

Beehiiv — newsletters as a growth engine

Best for: publishers who want to grow and monetize a newsletter audience.

Built by people who scaled Morning Brew, Beehiiv treats a newsletter as a business, not a mailing list. Native referral programs, a recommendation network, an ad marketplace and paid subscriptions are all built in. If your goal is to grow and monetize an audience, the tooling is unmatched. It's less suited to transactional or ecommerce email.

Skip it if: you're sending product or store email rather than publishing.

Pros

• Referral program and recommendation network built in
• Ad marketplace and paid subscriptions native
• Built by the team that scaled Morning Brew

Cons

• Not designed for transactional/ecommerce email
• Design flexibility narrower than general ESPs
• Costs rise with subscriber count

Standout features

• Recommendation network: Other newsletters send you subscribers on autopilot.
• Monetization stack: Ads, boosts and paid tiers without third-party tools.
• 3D analytics: Acquisition source, engagement and revenue per subscriber.

Beehiiv pricing

• Launch (free): Up to 2,500 subscribers
• Scale: From ~$39/month — referral program, boosts, ad network
• Max: From ~$99/month — remove branding, priority support
• Enterprise: Custom

Resend — email the way developers want it

Best for: engineering teams that want transactional + marketing email with a first-class API.

Resend is the breakout developer-first platform: a clean API, the open-source React Email library for building templates in code, and both transactional and marketing email in one place. Deliverability and DX are excellent, and the free tier (3,000 emails/month) is enough to ship a side project. The marketing/broadcast UI is younger than the incumbents, but for engineering teams it's the obvious modern choice.

Skip it if: non-technical marketers will own your email.

Pros

• Best developer experience in email
• React Email — templates as versioned code
• Transactional + marketing in one platform

Cons

• Marketing/broadcast UI is young
• Fewer no-code integrations
• Less hand-holding for non-developers

Standout features

• React Email: Build templates in code, review them in pull requests.
• Clean API + SDKs: Send in minutes from any stack, with great logs.
• Shared infrastructure: One domain setup covers product and marketing mail.

Resend pricing

• Free: 3,000 emails/month
• Pro: $20/month — 50,000 emails
• Scale: $90/month — 100,000 emails, dedicated IPs available
• Enterprise: Custom

Loops — lifecycle email for SaaS

Best for: SaaS teams sending campaigns and product events from one tool.

Loops is built specifically for software companies: marketing campaigns and transactional/product events in one modern, fast interface, with an events model that maps neatly to how SaaS apps fire signals (signed up, activated, upgraded). No free plan, and a younger ecosystem, but for a SaaS team it removes the usual frankenstein of three different email tools.

Skip it if: you're not running a product with user lifecycle events.

Pros

• Campaigns + transactional in one modern tool
• Events model maps to SaaS signals
• Fast, focused interface

Cons

• No free plan
• Younger ecosystem and integration list
• Not aimed at ecommerce or publishing

Standout features

• Event-triggered loops: "Signed up but not activated" journeys in minutes.
• One audience: Product and marketing email share contacts and suppression.
• SaaS-native templates: Onboarding, trial-end and upgrade sequences out of the box.

Loops pricing

• Starts at ~$49/month — includes 5,000 contacts, scales with list size
• Transactional included on all plans

Omnisend — Klaviyo's value alternative

Best for: smaller ecommerce stores that want Klaviyo's playbook at a friendlier price.

Omnisend gives smaller stores most of Klaviyo's ecommerce playbook — automations, email + SMS + push, product blocks — at friendlier pricing and with an easier setup. The analytics aren't as deep, but for a store that finds Klaviyo's bill hard to justify, it's the smart trade.

Skip it if: you need Klaviyo-grade predictive analytics and segmentation.

Pros

• Email + SMS + push in one automation
• Klaviyo-style flows with easier setup
• Friendlier pricing for small stores

Cons

• Analytics shallower than Klaviyo
• Weaker outside ecommerce
• Template selection is smaller

Standout features

• Pre-built ecommerce automations: Cart, browse and post-purchase flows ready on day one.
• Multi-channel campaigns: Add SMS or push to any email flow without new tools.
• Product picker: Pull live products, prices and images into emails.

Omnisend pricing

• Free: 250 contacts, 500 emails/month
• Standard: From $16/month — 6,000 emails, automation
• Pro: From $59/month — unlimited emails, SMS credits included

Flodesk and Substack — two specialists worth knowing

Flodesk charges one flat rate (~$38/month) no matter your list size and has the prettiest templates in the category — ideal for designers, coaches and creators who value aesthetics and predictable billing, and whose lists are large enough that flat pricing wins. Substack is the zero-setup way to launch a paid newsletter: free to use, it takes 10% of subscription revenue, and you get built-in discovery and payments. The trade is ownership and customization — you're building on their platform, not yours.

Also rising: Customer.io (behavioural, event-driven messaging for product teams), Encharge (visual automation for SaaS) and Bento (founder-friendly email with strong analytics).

How to actually choose

Work top to bottom — the first question that has a clear answer usually picks the tool:

1. What are you sending? Store email → Klaviyo/Omnisend. Audience/publishing → Kit/Beehiiv. Product/SaaS → Resend/Loops. General business → Brevo/MailerLite/Mailchimp.
2. What's your list shape? Big list, occasional sends → per-send billing (Brevo). Small list, heavy automation → per-contact is fine.
3. Who operates it? Engineers → Resend/Loops. Non-technical marketers → MailerLite/Mailchimp/Brevo.
4. How much automation do you genuinely need? Most teams overestimate this. If you need branching journeys, ActiveCampaign or Klaviyo; if you need a welcome series and a newsletter, almost anything here does it.
5. Then, and only then, compare price — at your projected list size, not today's.

For the full decision framework — how pricing models really work, the deliverability checklist, and a printable comparison list — read our how to choose email marketing software buyer's guide.

Before you commit: many of these platforms run startup programs with credits or discounts. It's worth five minutes to check whether you qualify — it can wipe out your first year's cost. We track these in our startup credits directory.

Switching platforms without losing deliverability

If you're migrating, don't just export and blast your list from the new tool — you'll torch your sender reputation. Export contacts with their engagement data, import only engaged subscribers first, authenticate your domain (SPF, DKIM, DMARC) before the first send, and warm up by sending to your most-engaged segment for the first week or two. Every platform above supports CSV import and domain authentication; the good ones (Brevo, MailerLite, Resend) walk you through it during onboarding.

Frequently asked questions

The verdict

If we had to hand one recommendation to a stranger: start with MailerLite if you're small and want it to look good, Brevo if value and flexibility matter most, Klaviyo if you sell products, Kit or Beehiiv if you're building an audience, and Resend or Loops if you write code. Whatever you choose, decide on the billing model first, authenticate your domain, and check for a startup discount before you pay — those three moves matter more than any single feature.

Ready to choose? Browse every option in our email marketing directory, grab a current deal, claim startup credits, or explore open-source alternatives if you'd rather self-host.

Compare every platform side by side, with current deals, in our email marketing category.