Omnisend vs. Mailchimp vs. Klaviyo: Which is best in 2026?

Omnisend leads with ecommerce focus and value, coming in at $132/month for 10,000 contacts versus Klaviyo’s $150 and Mailchimp Standard’s $135. The data and predictive analytics win is Klaviyo’s, and Mailchimp’s toolkit is best for general marketing.

Those are our core findings over a three-day testing period for all tools. We compared their pricing, ecommerce features, AI, channels, support, and ease of use to help you pick the right one for your store.

Omnisend vs. Mailchimp vs. Klaviyo: Quick comparison

Mailchimp trails Klaviyo and Omnisend’s capabilities, only winning outright for its Shopify App Store rating. Omnisend has the best rating on Capterra and offers the widest support coverage. Klaviyo covers the most channels and apps.

The table below compares Omnisend, Mailchimp, and Klaviyo with color-coded blocks to help you determine their capabilities at a glance.

Green is the winner, yellow is second place, and orange is third place. Where a row contains duplicate colors, such as two yellows, those tools are tied.

Omnisend vs. Mailchimp vs. Klaviyo: Where does each win?

Omnisend wins for ecommerce-first email and SMS marketing. Pre-built and AI-enabled elements, such as segments and reports, give you a low setup burden without missing out on enterprise capabilities. Klaviyo wins for granularity, predictive analytics, and AI capabilities at scale. Mailchimp wins for basic email marketing requirements.

Omnisend: The winner for multichannel marketing

Omnisend’s the best tool for the day-to-day segments and flows you need to maximize revenue and retention. When you need granularity, we found that the flow builder supports it: up to 20 trigger filters, 20 conditional splits, and four exit conditions per workflow.

24/7 support is provided in all plans, as is the AI segment builder and generative AI. Paid plans also include Forms AI and Reports AI, with the latter proving extremely helpful at summarizing performance without manually looking for the data.

Gamified list growth tools, multi-store support, global SMS coverage across 190+ countries, native web push notifications, and Customer Breakdown with lifecycle stages based on RFM analysis help you maximize reach and improve your marketing further.

The drawbacks: Limited CRM capabilities, fewer integrations than Mailchimp or Klaviyo, and the Pro plan offers similar pricing to Klaviyo (its biggest savings come with the Standard plan).

Klaviyo: The winner for data depth and predictive analytics

Klaviyo’s data-first approach to email marketing offers multiple unique capabilities. Firstly, it brings CLV, churn, and predicted purchase date out of the box, and then adds cross-sell timing and next-best-product predictions with the Marketing Analytics add-on.

Who benefits from this? We found that it works best when you’re already generating revenue from email marketing and want to optimize. Also, we were able to assign seven different roles to users, including owners, managers, and content creators, making it a good fit for large teams.

K:AI, Klaviyo’s built-in AI, is another differentiator. There are over 40 predictive and generative features for CLV scoring, churn risk, and RFM analysis, as well as content tools such as Brand Voice AI and Flows AI.

The drawbacks: Advanced features take time to learn. The pricing also scales quickly, and you pay a premium price whether you use all its features or not. Not a fan? Our Klaviyo alternatives article provides more options to consider.

Mailchimp: The winner for general marketing for beginners

Mailchimp is the broadest all-purpose marketing toolkit here. Alongside email and SMS, it pairs a website builder, social posting, and landing pages, and we found its library of 130+ ready-made email templates to cover most ecommerce scenarios.

That range comes with a low entry price, which makes it a good pick for absolute beginners and non-ecommerce businesses wanting the basics.

It also covers ecommerce, syncing orders and products, automating welcome and abandoned cart flows, and offering predictive CLV, purchase likelihood, and churn risk. 

We did find these ecommerce features felt secondary to campaign and general marketing features, though, as our Mailchimp review shows.

The drawbacks: Only the Standard plan has predictive analytics, predictive segmentation, and generative AI, at which point it no longer has a price advantage.

Pricing comparison

Klaviyo has the highest starting prices, and Mailchimp Essentials offers the lowest.

But Mailchimp Essentials gates key features, including predictive segmentation, CLV, and advanced segmentation, so on the comparable Standard plans, Omnisend undercuts Mailchimp at nearly every tier. Omnisend Pro is similarly priced to Klaviyo.

We’ve created an Omnisend vs. Mailchimp vs. Klaviyo pricing table below covering 500 to 50,000 contacts.

omnisend-vs-mailchimp-vs-klaviyo | Pricing comparison

Something else to consider is how each tool counts contacts because it dictates how quickly you’ll reach the next tier. Klaviyo bills on active profiles; anyone emailable unless suppressed.

Omnisend counts subscribers and non-subscribers, but not unsubscribed contacts. Mailchimp counts the most contact types towards your billable total, including non-subscribers and unsubscribed contacts alike until you archive or delete them.

How do the free plans compare?

Omnisend’s Free Forever plan is the only one with 24/7 support. Both Omnisend and Klaviyo’s free plan provide access to all core email marketing features, whereas Mailchimp’s free plan has no automation whatsoever.

All provide storage for 250 contacts and let you send 500 emails/month. Once your contact count exceeds 250, you need a paid plan.

Klaviyo vs. Omnisend vs. Mailchimp for ecommerce: Which is best?

Klaviyo is best when you’re already generating revenue from email and want to go further with predictive analytics. Omnisend is best when you want email, SMS, and web push in one tool with better value at comparable list sizes. Mailchimp is a good option for those who don’t need complex filters or want to pay extra for predictive analytics.

For Shopify stores

Omnisend is better for Shopify than Mailchimp as your store grows, because it’s built for ecommerce with an AI segment builder and customer lifecycle maps based on RFM analysis in all plans.

All three have comparable core list growth tools, flows, campaigns, and channel capabilities, and each has predictive analytics (plan-dependent in Mailchimp). Mailchimp is more of a general-purpose marketing tool, and that shows once you scale.

As of August 2026, Mailchimp and Omnisend share the highest Shopify App Store rating at 4.8/5 (based on 1,320+ reviews for Mailchimp and 2,900+ for Omnisend). Meanwhile, Klaviyo sits at 4.7/5 across 2,900+ reviews.

For BigCommerce, WooCommerce, and other platforms

Omnisend, Klaviyo, and Mailchimp all have native apps for BigCommerce, WooCommerce, PrestaShop, and other leading platforms.

Across all these integrations, your contacts and store events, such as purchases and abandoned carts, sync automatically. Which tool is best for your use case depends on your appetite for advanced features and budget.

Here’s what we recommend based on your situation:

Omnisend vs. Mailchimp vs. Klaviyo: Which should you choose?

Having tested all three, we can see any of them running a store’s email and SMS well. The difference comes down to their depth, your budget, and your appetite to learn and maintain them. Here’s what we recommend:

Choose Omnisend if

You want a quick setup for your segments, flows, and reports with a native Shopify or other commerce integration to feed your marketing. One platform for email and SMS is your ideal setup, without any analytics add-ons that inflate your bill.

Value and support availability are important to you, as are automation and AI to reduce the time you spend building and analyzing your account.

Choose Klaviyo if

You’re generating revenue and customer data from email marketing, and need a tool that’ll predict what customers do and recommend what you should do next. Greater control and insights into your customer lifecycle are your priority.

AI that helps you build matters to you, and you have a growing need to create unified contact profiles, which Klaviyo’s Advanced KDP add-on provides.

Choose Mailchimp if

You sell products and services or have general email marketing needs, such as forms, welcome emails, and campaigns. You might need flows that trigger based on customer behavior and store activity, but don’t need complex filters.

Revenue and retention are not your priorities; you want to grow your list, reach customers when they engage, and have access to SMS when you need it.

FAQs

Which is cheapest: Omnisend, Mailchimp, or Klaviyo?

Mailchimp has the lowest starting price at $13/month, compared with Omnisend’s $16/month and Klaviyo’s $20/month. The caveat is that Mailchimp’s entry-level Essentials plan restricts features; Omnisend and Klaviyo give you standard email marketing features in all plans.

Is Mailchimp good for ecommerce?

Yes, Mailchimp works well for beginner stores wanting to grow their list and automate basic customer experiences, such as a welcome series. Its Shopify app has a 4.8/5 rating.

Can you migrate between these platforms?

Yes, you can migrate between Klaviyo, Omnisend, and Mailchimp, but the migration difficulty differs between them. Switching from Mailchimp to Omnisend requires your Mailchimp API to move contacts over automatically. As for switching from Klaviyo, Omnisend provides a free migration service when you have 250+ contacts, or you can use the Klaviyo Data Import Tool to move your contacts, data, and segments over.