Two different ideas of a customer record
The fastest way to understand Klaviyo vs Mailchimp is to look at what each stores about a shopper.
In Klaviyo, a profile is a timeline of events: viewed product, added to cart, started checkout, placed order, fulfilled order, opened email, clicked SMS. Each event carries product details, prices and categories. On top of that, Klaviyo calculates historic and predicted lifetime value, churn risk and expected date of next order. Segments and flows can use any of it.
In Mailchimp, a contact is a member of an audience with tags, merge fields and subscription status. When you connect a store, Mailchimp syncs customers, orders and products, and you can build segments on purchase activity and trigger journeys like abandoned cart or first purchase. It works, but with fewer event types and simpler conditions.
That difference in the data model explains most of the rest of this page.
Pricing at 10,000 contacts
| Klaviyo | Mailchimp | |
|---|---|---|
| Billing unit | Active profiles | Stored contacts, including unsubscribed |
| Email at 10,000 | $150/month (Email plan) | About $110 (Essentials), $135 (Standard), $350 (Premium) |
| SMS | Credits billed on top | Separate add-on |
| Free plan | 250 active profiles, 500 sends/month | 250 contacts, 500 sends/month |
The email-only gap at 10,000 is small. Two things move it. First, Klaviyo lets you suppress inactive profiles so they stop counting, while Mailchimp keeps charging for unsubscribed contacts in your audience. Second, stores that add SMS on Klaviyo often see SMS become the larger part of the bill, so budget for it separately.
A worked example: 14,000 stored contacts, 10,000 you can email
Most stores that have been emailing for a few years carry dead weight: unsubscribes, bounced addresses and people who have not opened in a year. Say a store has 14,000 contacts on file, of which 10,000 are subscribed and reasonably engaged.
- On Mailchimp, all 14,000 count toward the contact tier, because unsubscribed and non-subscribed contacts are included. The store pays for the 14,000 tier unless someone archives or deletes the dead records, which also removes their history.
- On Klaviyo, unsubscribed and suppressed profiles do not count. After suppressing the inactive ones, the store pays for 10,000 active profiles: $150/month on the Email plan.
So the headline prices ($150 vs about $135 at exactly 10,000) understate how often the bills converge in practice. For an older list with poor hygiene, Klaviyo can cost the same or less for email. What reliably makes Klaviyo more expensive is adding SMS.
Store scenarios
| Store situation | Better fit | Why |
|---|---|---|
| Shopify brand where flows drive a large share of revenue | Klaviyo | Deeper triggers, predictive segments, per-flow reporting |
| Catalog with frequent restocks and price changes | Klaviyo | Back-in-stock and price drop triggers |
| Store that wants SMS inside abandoned cart flows | Klaviyo | Email and SMS share one flow builder and profile |
| Café or boutique selling mostly in person | Mailchimp | Broader small-business marketing, simpler setup |
| Owner who needs a website, social posts and email together | Mailchimp | Website builder, social posting and ads in one account |
| Store sending a monthly newsletter and one welcome series | Mailchimp | Klaviyo's depth would go unused |
SMS consent: the second channel changes the project
Klaviyo's biggest practical difference for many brands is SMS in the same flows. That is also where extra work hides. SMS consent is separate from email consent and has its own legal requirements, so you cannot text your email list just because they subscribed to email. Stores moving to Klaviyo for SMS typically add a separate SMS opt-in to signup forms and checkout, and start with a small, consented audience.
Budgeting matters too. Email costs on Klaviyo are predictable by profile count; SMS costs scale with messages and credits, and spike around sales events. Set a monthly SMS budget and review cost per order from SMS before expanding it. Mailchimp's SMS add-on raises the same consent questions, but fewer Mailchimp stores rely on it heavily.
Flows compared, step by step
Abandoned checkout. Both tools can email shoppers who leave a checkout. Klaviyo lets you trigger on "started checkout", exclude anyone who ordered since, branch on cart value, show the exact products with images, and add an SMS step if they have SMS consent. Mailchimp's abandoned cart journey sends the cart contents with fewer branching and channel options.
Browse abandonment. Klaviyo triggers on viewed product events from its onsite tracking. Mailchimp's support for this is limited, so many stores on Mailchimp skip this flow.
Winback. Klaviyo can target customers whose predicted next order date has passed. On Mailchimp you would approximate it with "last purchase more than X days ago", which ignores how often each customer usually buys.
Back in stock and price drop. Klaviyo has these triggers. Mailchimp does not.
Newsletter. Here Mailchimp is at least as good. Its editor, templates and content tools are friendlier, and it adds social posting from the same place.
When Mailchimp is the right call
- Your store is small, and your email program is a welcome series, abandoned cart and a monthly newsletter.
- You also sell in person, run events or have a service business, and want one tool for all marketing.
- You want a website builder, landing pages and social scheduling in the same account.
- Nobody on the team will build and maintain detailed segments.
In those cases Klaviyo's depth is paid for and unused.
When Klaviyo pays for itself
- Automated flows generate a meaningful share of store revenue and you want to improve them.
- You have a catalog large enough that product-level personalization matters.
- You want SMS and email coordinated in the same flows.
- You will actually segment on predicted behavior and purchase history.
A simple test before deciding
Pull last quarter's email revenue report from your current tool. If automated flows already drive a large share of email revenue and you want to grow that share, Klaviyo's segmentation and flow depth will likely pay back the difference in price. If most revenue comes from occasional campaigns and your flows are a welcome series and an abandoned cart email, the extra depth will mostly go unused, and Mailchimp or a lower-cost store email tool is the better value.
Switching between them
Mailchimp to Klaviyo. Connect Shopify or WooCommerce to Klaviyo first so it imports historic orders and builds profiles. Then import your Mailchimp audience with subscription status; bring unsubscribed and cleaned contacts in as suppressed. Rebuild flows rather than recreating journeys one to one, starting with welcome, abandoned checkout and post-purchase. Recreate your main templates, set up your sending domain with SPF, DKIM and DMARC, and send to your most engaged profiles first while the new domain builds reputation. Collect SMS consent separately; email consent does not cover texting.
Klaviyo to Mailchimp. Export profiles with consent and suppression status and connect your store to Mailchimp. Predictive fields, SMS consent records and per-flow revenue history do not transfer in a usable way, so export the reports you need first. Rebuild the flows you keep as customer journeys, and accept that some (browse abandonment, back in stock) may not have a direct equivalent.
Switching checklist
| Workstream | Mailchimp to Klaviyo | Klaviyo to Mailchimp |
|---|---|---|
| Store data | Connect Shopify or WooCommerce first to backfill orders | Connect the store to Mailchimp to sync customers and orders |
| Contacts | Import audience with consent status and tags | Export profiles with email consent and suppression status |
| Suppressions | Import unsubscribed and cleaned contacts as suppressed | Import suppressed profiles as unsubscribed |
| Flows | Rebuild welcome, abandoned checkout, post-purchase first | Rebuild kept flows as journeys; drop unsupported triggers |
| SMS | Collect separate SMS consent before texting | Export SMS consent records; plan a new SMS provider if needed |
| Reporting | Export Mailchimp campaign history for benchmarks | Export per-flow revenue and predictive reports before leaving |
| Sending domain | Set SPF, DKIM and DMARC; send to engaged profiles first | Authenticate domain in Mailchimp and warm up gradually |
Where Sequenzy fits
Sequenzy is a lower-cost option for stores that want the core ecommerce flows without paying per profile or contact. It connects natively to Shopify (WooCommerce in beta), runs abandoned cart, browse abandonment and post-purchase flows, and segments on predicted CLV, churn risk and next order date from store orders. It bills by emails sent with unlimited contacts, typically $49/month for 60k emails (unlimited subscribers). It also handles Stripe, Paddle and Polar billing events if you sell subscriptions.
It is not a full Klaviyo replacement: product recommendations are rule-based rather than AI, SMS is a paid add-on from US and Canada numbers with no two-way inbox, and there are no back-in-stock or price drop triggers. It also lacks Mailchimp's website builder and social tools.
Decision checklist
- Do automated flows already produce a meaningful share of email revenue? If yes, Klaviyo's depth will likely pay for itself.
- Do you want SMS in the same flows as email? Klaviyo, with a separate SMS consent plan and budget.
- Is your list full of old or unsubscribed contacts? Compare Klaviyo's active-profile billing against Mailchimp's full contact count.
- Do you also need a website, landing pages and social posting? Mailchimp covers more of that.
- Is nobody going to build and maintain segments? Mailchimp or a simpler store email tool is enough.
