Klaviyo vs Mailchimp for ecommerce

Klaviyo treats the customer profile as the centre of everything. The store integration writes orders, products viewed, carts started and checkouts begun to that profile as events, the site's own custom events can be added, and predictive fields such as expected next order date and lifetime value are calculated from the history. Segments and flows read all of it, which is why a Klaviyo flow can trigger on a specific product, wait for the reorder cycle, and branch on whether the customer has since bought.

Mailchimp organizes contacts into audiences with tags, groups and merge fields, and the store connection brings in purchase data so that journeys can respond to orders and abandoned carts and campaigns can include products. The model is broad rather than deep, which is exactly right for a business whose contacts are not all shoppers.

If most of a store's email revenue comes from campaigns, meaning launches, promotions and a regular newsletter to the full list, Mailchimp does that job well. Its editor, templates, scheduling, send-time features and reporting are mature, and the journey builder covers welcome, abandoned cart and post-purchase for connected stores.

If most of the revenue comes, or should come, from automated flows that respond to individual behaviour, Klaviyo's advantage compounds. Browse abandonment on a category, replenishment timed to the product, win-back split by value tier, post-purchase education by product line, and SMS steps inside the same flow all depend on data Mailchimp's store connection does not carry at the same granularity. Most stores start campaign-heavy and shift toward flows as they grow, which is often when the switch happens.

Moving between the two is routine but not free of effort. Lists, consent status, tags and profile fields export and import cleanly. Templates are rebuilt in the new editor, journeys or flows are rebuilt in the new builder, and signup forms on the site are replaced. Domain authentication, sending reputation warm-up and the store integration need setting up again, and attribution reports restart from zero.

Before switching, decide what the program will do in the next year that it cannot do today. If the answer is a list of behaviour-driven flows and segments, the move to Klaviyo has a purpose. If the answer is better newsletters and a cleaner list, the current tool may only need better use. A migration made to chase a feature list rarely changes results; one made to run specific flows usually does.