15 Best Email Marketing Software Platforms Compared (2026)

Really, choosing email marketing software is down to just three questions: what you (or aren‘t doing) to sell, how quickly your list is growing, and how much of that growth you‘re willing to pay for. According to how they rank on 15 different sites, here are fifteen tools that answer nearly every one of those questions but then covers in detail the five points where people often run into trouble: Mailchimp vs. Klaviyo, the Absolute cheapest email marketing tool, ecommerce usability, the best built-in automation features, and which a good “free” plan actually looks like. For the strategy behind picking a platform in the first place, see the fundamentals of building an email marketing program.

Email Marketing Software-A service that allows a company to create, deliver, automate, and measure email campaigns to an opted-in list of consumers. The cost structure is based on number of contacts or number of emails sent per month.

Mailchimp vs Klaviyo — which should you actually pick?

Pick Klaviyo if For a Shopify, WooCommerce or BigCommerce store, for automation based on purchase behavior. Pick Mailchimp if not a shopping cart; slowest, least technical way to get a first campaign launched.

The split is structural, not a matter of one platform being better overall. Klaviyo centers store data getting your store connected is among the first steps in onboarding, and tools such as segments, product blocks, and revenue analysis all require that connection to be established. Non- ecommerce-specific independent tests of the two on points of critical concern to the two segmentation, automations, revenue attribution rated Klaviyo higher, while non-ecommerce criteria ease of setup, template variety, pre-ecommerce starting price point favored Mailchimp.

The gap has narrowed on price at the free tier. Both platforms now cap free accounts around 250 contacts, which removes what used to be Mailchimp’s biggest advantage for anyone starting from zero. Where the platforms diverge more sharply is pricing structure as you scale: Mailchimp’s plans are tiered by contact count, while Klaviyo is modular — you pay for the core plan, then add analytics, reviews, or service features separately, priced against active profiles or order volume rather than a flat contact tier.

If you’re already running a store and doing more than occasional newsletters, Klaviyo’s learning curve pays for itself in automation depth. If you’re a service business, a newsletter, or anything without a connected store, Mailchimp (or a cheaper generalist below) will get you further for less setup time.

The cheapest email marketing software, and why “cheapest” is misleading

Brevo and Mailjet currently post the lowest verified entry prices — Brevo at roughly $9/month for 5,000 emails, Mailjet at the same $9/month for 8,000 emails aimed at developers using its API. Sender and EmailOctopus post the most generous free tiers among tools with real feature sets, not just trial periods.

The entry price on a pricing page is a poor predictor of what you’ll actually pay in a year. Two platforms priced almost identically at 1,000 contacts can diverge sharply by 10,000 contacts — deeper automation and integrations tend to justify the higher-scaling option, but only if you’ll actually use them. Before comparing sticker prices, check whether a platform bills by contact count or by email volume; a volume-based model like Brevo’s rewards a small, engaged list that you email often, while a contact-based model rewards a large list you email rarely. Picking the wrong billing model for your sending pattern is the single most common way “cheap” software gets expensive fast.

Best email marketing software for ecommerce

Klaviyo and Omnisend lead this category for different reasons. Klaviyo goes deeper on segmentation and predictive analytics — churn risk, expected next order date, customer lifetime value — and integrates with 15 major ecommerce platforms. Omnisend is the faster, simpler build: pre-made workflows for cart recovery, order confirmations, and welcome series that a Shopify or WooCommerce store can launch same-day, plus SMS and push notifications under the same roof.

ActiveCampaign is a good option if your store also does a lot of B2B or service-side email, since there are over 900 automation templates and over 1000 native integrations that go far beyond ecommerce. For a very small or new store, MailerLite‘s ecommerce toolset is somewhat lighter than a dedicated platform, but the simplicity may be a better tradeoff until you get to that point.

Best email marketing software with automation built in

ActiveCampaign has the most powerful automation engine of any listed here a visual, drag-and-drop builder with over 100 trigger options, if/else branching, and even the ability to split-test entire automation workflows, not simply individual emails. Naturally, all of this power has a steep learning curve, and a near-doubling of the price tag between the 1,000-contact and 10,000-contact plans.

For most small teams, that much power is overkill. Brevo, Omnisend and Moosend all offer at a reasonably affordable price usable automation such as welcome series, cart-abandonment, birthday/aniversary triggers without the ActiveCampaign-ness of it, or cost scaling. If your automation necessities are forking fully-fledged (multi-branch lifecycle campaigns, predictive-send-time, cross-channel journeys of email, SMS and web), ActiveCampaign or Klaviyo are the only two built up to it; all the others on this list will begin to seem restrictive.

Free email marketing platforms that don’t cripple you

Not every free plan is built the same way, and the difference that matters most is whether automation is included or gated behind a paywall. Sender’s free plan (2,500 subscribers, 15,000 emails/month) includes automation, segmentation, and the drag-and-drop editor with no credit card required — currently one of the most complete free tiers available. Omnisend’s free plan is smaller in volume but includes pre-built ecommerce automation workflows that would cost extra elsewhere. Kit’s free tier, aimed at newsletter creators, allows up to 10,000 subscribers before any payment is required, though its feature set is narrower and creator-focused rather than general marketing.

Mailchimp and Klaviyo’s free offering, by contrast, now tops out at 250 contacts each great for testing the waters, not for running an actual program to more than a few people. If you are planning on remaining on a free plan past your demo period, make sure to ask if automation is included before you bother getting a platform up to speed, as some providers try to claim that as a paid feature even on their free plan.

FAQ

Is Mailchimp still good in 2026?

Yes, in terms of a particular use case: teams new to email marketing, not selling through an ecommerce store and wanting the fastest possible setup. It’s no longer the best value pick on most other measures — the free plan is smaller than several competitors, and automation is now a paid feature. If you’re choosing fresh rather than staying for switching-cost reasons, compare it against Brevo or MailerLite before committing.

Is there a truly free email marketing tool with automation?

Yes. Sender and Omnisend both include real automation on their free tiers rather than gating it behind a paid plan, which distinguishes them from Mailchimp and Klaviyo’s free tiers. Check the current subscriber and send limits before choosing, since free-tier numbers change often.

Can I switch email marketing platforms without losing my list?

Generally yes — most platforms support CSV import/export of contact lists, and several (including Klaviyo) offer guided migration tools that sync existing data from a previous provider. What you typically lose in a switch is campaign history, engagement scoring built up over time, and any automation logic, which has to be rebuilt on the new platform rather than transferred automatically.

What’s the difference between an email marketing tool and a CRM with email?

An email marketing tool is focused on campaigns and lists, whereas a CRM with email (which you can get for free from HubSpot, for example) are focused on individual contact records and pipeline stages, with email as one attached channel. If your team also wants to track deals or support tickets related to the email contacts, a CRM-first tool is preferable since the data isn‘t being duplicated across two systems.

Choosing between them

The quickest way to eliminate most of the options is to go back to the beginning and ask yourself a simple question are you selling product through a connected store? If the answer is yes, then begin with Klaviyo or Omnisend and flip to the rest only if the price is a no-go. If no, start with whichever free tier actually includes automation — Sender or Brevo, not Mailchimp — and upgrade only once you hit a real limit, not before.