The Klaviyo vs Mailchimp question comes up on almost every ecommerce account we take on. Both tools send email, build signup forms and run automations, so on a feature checklist they look similar. The real difference is the data underneath: Klaviyo was designed around store events such as viewed product, started checkout and placed order, while Mailchimp was designed around a contact list and grew ecommerce features on top.
That one difference decides most of what follows: how precisely you can segment, how smart your automations can be and how much the platform costs relative to what it earns. Below is a side-by-side Mailchimp vs Klaviyo comparison, then a plain rule for choosing Mailchimp or Klaviyo and what switching involves.
Klaviyo vs Mailchimp at a Glance
| Area | Klaviyo | Mailchimp |
|---|---|---|
| Built for | Ecommerce brands on Shopify, WooCommerce, BigCommerce and similar | Small businesses, creators, nonprofits and simple stores |
| Store data | Syncs orders, products, catalog and onsite events to each profile | Syncs purchase data through store integrations, with less event detail |
| Segmentation | Any combination of events, properties, dates and predicted values | Tags, groups, contact fields and purchase activity |
| Automation | Flows triggered by lists, segments, events, dates or price drops | Customer Journey Builder with starting points and branches |
| SMS | Built in next to email, with shared profiles and reporting | Available as an add-on in a limited set of countries |
| Ease of use | Steeper learning curve, more to configure | Easier for beginners and non-technical teams |
| Billing basis | Mainly the number of profiles you can email, plus SMS credits | Contact count and plan tier, with send limits per plan |
How Klaviyo and Mailchimp Store Customer Data
In Klaviyo, every action a shopper takes is stored on their profile as an event with properties: the product they viewed, its collection, its price, the discount code they used, the items in each order. That lets you build segments such as "bought from the swimwear collection twice, last order more than 90 days ago, still opening email". Klaviyo also calculates predictive fields like expected next order date and predicted lifetime value once your store has enough order history.
Mailchimp can segment on purchase activity from a connected store, but most day-to-day targeting is done with tags, groups and contact fields. That is perfectly adequate for a newsletter or a service business. It becomes limiting when you want to send different emails to people who bought a specific product, or trigger a message when a price drops on something a shopper viewed.
Automation: Klaviyo Flows vs Mailchimp Journeys
Klaviyo flows can start from a list signup, a segment entry, any tracked event, a date property such as a birthday, or a catalog price drop. Inside a flow you can split by any profile property or event detail and filter people out the moment they buy. We cover the structure in detail in our guide to Klaviyo flows, and the most valuable single automation in our abandoned cart email guide.
Mailchimp's Customer Journey Builder handles welcome series, date-based messages and basic abandoned cart emails well. It is easier to set up, and for a business with a handful of automations it is enough. The gap shows when you need many branches based on what someone bought or browsed.
Klaviyo vs Mailchimp for Shopify Stores
Both platforms connect to Shopify, but Klaviyo's integration goes much deeper. It syncs historical orders, the full product catalog and onsite events such as Viewed Product and Added to Cart, and it can create unique Shopify discount codes for each recipient. Mailchimp's Shopify integration syncs customers, orders and products and supports abandoned cart and product recommendation emails, which covers a simple store. If your email plan depends on browse and cart behavior or product-level segments, Klaviyo vs Mailchimp for Shopify is not a close call.
Reporting and Revenue Attribution Compared
Both tools report opens, clicks and revenue credited to each email, and both credit orders placed within an attribution window after someone interacts with a message. Klaviyo adds revenue per recipient for every flow message, industry benchmarks and predictive fields on profiles. Mailchimp's reports are simpler and easier for a small team to read. Neither measures incremental revenue on its own, so check email-attributed revenue against GA4 and your store orders before you judge either platform.
Deliverability on Klaviyo and Mailchimp
Neither platform is inherently better at reaching the inbox. What matters is your own setup and list hygiene. Since February 2024, Gmail and Yahoo require bulk senders to authenticate with SPF and DKIM, publish a DMARC record, offer one-click unsubscribe and keep spam complaint rates low. Both platforms support all of this, but you have to configure a branded sending domain rather than relying on the shared default.
What Changes in Cost as Your List Grows
On Klaviyo vs Mailchimp pricing, both platforms charge more as your audience grows, and at the same list size Klaviyo usually costs more. The fair comparison is cost against revenue attributed to email, not cost per contact. A store whose flows drive a meaningful share of repeat orders will usually find Klaviyo pays for itself; a business sending one newsletter a month often will not.
Before comparing plans, clean your list. Check how each platform counts unsubscribed, bounced and suppressed addresses toward billing, and remove people who have not opened or clicked in a long time. A bloated list costs money on either platform and drags down deliverability.
What Are the Weaknesses of Klaviyo?
Klaviyo's main weaknesses are cost, complexity and focus: it gets expensive as your profile count grows, it takes real time to configure well, and it is built for ecommerce rather than every kind of business.
- Cost at scale. Billing rises with the number of active profiles, so a large list of old, unengaged subscribers costs money every month unless you suppress them.
- Learning curve. Segments, flow filters and splits are powerful, but a store owner working alone can easily build flows that overlap or never trigger.
- Generous attribution. Flow and campaign revenue is based on an attribution window, so reported email revenue can look larger than what email truly adds.
- Ecommerce focus. Service businesses, publishers and B2B teams pay for depth they will not use.
When Mailchimp Is the Better Choice
- You run a service business, publication, nonprofit or local business and email is mainly a newsletter.
- Your store is small, sells a few products and does not depend on repeat purchases.
- The person running email is not technical and needs something simple.
- You want landing pages, basic social posting and email in one inexpensive tool.
When Klaviyo Is the Better Choice
- You sell on Shopify or WooCommerce and customers buy more than once.
- You want flows based on browsing, cart and order behavior, with product-level personalization.
- You plan to add SMS and want one profile and one report for both channels.
- You want to sync audiences to Meta and Google ads from the same segments.
Your product data matters in both tools. Dynamic product blocks pull titles, images and descriptions straight from your store, so the work in our product description SEO guide pays off in email too, and the ecommerce SEO checklist covers the catalog cleanup that makes feeds and product blocks look right.
Is There Anything Better Than Mailchimp?
There is something better than Mailchimp for specific kinds of business, but not one tool that beats it for everyone. Ecommerce stores usually do better with Klaviyo or Omnisend, which are built around order and product data. Creators selling courses and newsletters often prefer Kit (formerly ConvertKit). Brevo suits budget-conscious teams that also need transactional email, and HubSpot fits B2B companies where email is part of a sales pipeline. If Mailchimp does what you need today, switching for its own sake rarely pays off.
Switching From Mailchimp to Klaviyo
- Export with consent intact. Export subscribed contacts with their signup dates and tags, and export unsubscribes and cleaned addresses separately so you can import them as suppressions.
- Connect the store first. Install the Klaviyo integration and let it sync historical orders and the catalog before you build segments.
- Authenticate a sending domain. Set up SPF, DKIM and DMARC on a branded subdomain, then send to your most engaged subscribers first for the first couple of weeks.
- Rebuild flows, do not copy them. Use the move as a chance to add purchase filters, splits and SMS where you have consent.
- Swap forms and turn off old automations. Replace signup forms, then pause Mailchimp journeys the same day your Klaviyo flows go live so nobody gets two welcome emails.
If you want help choosing or migrating, our Klaviyo agency services cover setup, migration and flow builds, and a free audit will show where your current email program is leaving revenue behind. You can find more practical guides on the 95 Solutions blog.