If your store sells products people can buy repeatedly, the deciding question is not "which has more features" but "which tool makes it easiest to act on what customers actually do?" For most Shopify brands that points to Klaviyo; for some very small stores, Mailchimp is enough.
Pricing and integrations change often. Confirm current plans and the Shopify integration status on each vendor's site before you decide.
The core difference: purchase and browsing data
Klaviyo was designed around ecommerce events: viewed product, added to cart, started checkout, placed order, with the products and values attached. That lets you build segments like "bought product A twice, never bought B" or "viewed three times, never purchased" without workarounds.
Mailchimp began as a general newsletter tool and has added ecommerce features. It is capable, but behavior-driven segmentation and flows tend to take more effort there.
Automation and flows
For a store, the money is in automated flows: welcome, abandoned cart, browse abandonment, post-purchase, replenishment and win-back. Check how easily each platform lets you branch on purchase behavior, exclude people who already bought, and use product data inside the email. If replenishment timing matters to you, see how to build a replenishment flow.
Segmentation and reporting
- Segments that update themselves from order history and engagement.
- Revenue attribution per flow and campaign, so you can see what earned money, not just clicks.
- Predictive fields such as expected next order date, available in Klaviyo once your account has enough data.
How pricing works
Both tools charge according to how many contacts you have and which plan you choose. Do not compare the headline price in isolation. Compare what each costs at your list size, and consider how much of that list you actually email: suppressing contacts who never engage keeps costs and spam complaints down on either platform.
When each one makes sense
| Situation | Better fit |
|---|---|
| Repeat-purchase products (consumables, subscriptions) | Klaviyo |
| Need behavior-based flows and revenue reporting | Klaviyo |
| Tiny store, a monthly newsletter, little automation | Mailchimp may be enough |
| Mostly content or services, not a product catalog | Either; judge on simplicity |
If you are switching
- Export your contacts and keep consent status accurate.
- Connect Shopify and let order history sync before building segments.
- Rebuild your highest-revenue flows first.
- Authenticate your sending domain and ramp up volume gradually.
Then run the audit checklist to catch anything that migrated badly, and follow the Shopify setup guide for the flows to build first.
Quick answers
Is Klaviyo better than Mailchimp for Shopify?
For most ecommerce brands that depend on repeat purchases, yes: Klaviyo is built around store events such as orders, carts and browsing, which makes behavior-based segmentation and flows much easier. Mailchimp can still suit a small store that mainly sends occasional newsletters.
Is Klaviyo more expensive than Mailchimp?
Both price by audience size and plan, and both change their pricing over time, so compare current prices at your list size. Klaviyo is often judged on revenue generated rather than cost alone, because well-built flows can earn far more than they cost.
Can I move from Mailchimp to Klaviyo?
Yes. You export your lists, import them with consent status intact, connect Shopify so purchase history syncs, rebuild your key flows and warm up sending gradually to protect deliverability.
Tehseen Arbab
Retention and lifecycle marketer for DTC supplement and coffee brands. I led retention for a supplement brand whose monthly run-rate grew from about $500K to $700K, and I work in Klaviyo, Skio, Recharge, Meta Ads and Shopify.