Joonas Rotko · Founder, That Marketing Buddy
I assess marketing software through 10+ years of agency work, current product research, buyer needs, competing tools and total cost.
How this review was prepared
This is a research-based review. I checked Klaviyo's current product pages, pricing, documentation and terms, then assessed what those published limits mean for a marketing team or small agency. I have not presented vendor claims as personal testing.
This page may include affiliate links, meaning I may earn a commission if you sign up (at no extra cost to you).
The Verdict
Is Klaviyo right for you?
Klaviyo is an ecommerce marketing platform that combines a customer data platform, email, SMS, WhatsApp, push and reviews, with AI agents (Composer and Customer Agent). Paid pricing is based on active profiles, and the free plan is small.
The free plan covers up to 250 profiles and 500 emails a month, with $5 of mobile messages and $5 of Composer usage. Third-party trackers report the Email plan at $20/month at 500 profiles, $100 at 5,000, $150 at 10,000 and $400 at 25,000, and Email + SMS from $35. Klaviyo's own page shows those prices only through an interactive calculator.
It fits a store that wants deep customer data, segmentation and flows. It fits poorly when you want a flat price or a cost you can read in advance, since the bill moves with active profiles and channels.
Who It's For
Who Klaviyo is for (and who it isn't)
✓ Best for
- +Ecommerce brands that live in customer data and segmentation. Klaviyo describes a CDP with segmentation, flows, personalisation and analytics, and lists 350+ pre-built integrations including Shopify, Salesforce, Stripe and HubSpot.
- +Stores that want email and SMS from one system. Klaviyo covers email, SMS, RCS, WhatsApp, mobile push, social, forms and reviews, and its Email + SMS plan bundles SMS credits.
- +Teams that want AI to build flows and answer customers. Composer creates and audits flows and campaigns from a prompt, and Customer Agent answers customer questions, with Klaviyo claiming it resolves 65% autonomously.
× Consider something else if
- −You want a flat price and a fully readable price list. Klaviyo's page shows paid prices through a plan estimate tool. A simpler single-plan tool is easier to budget.Try Drip →
- −You want email, SMS and push at a mid-market ecommerce price. Omnisend is built around omnichannel ecommerce messaging and is worth pricing against Klaviyo at your profile count.Try Omnisend →
- −You are not selling products online. Klaviyo's depth is ecommerce data. A general email platform is cheaper for a service or content business.Try Brevo →
What You Can Do
What can Klaviyo do?
Build flows from store events
Trigger welcome, abandoned cart and post-purchase flows from store data, and split by segment. Composer can audit and create flows and campaigns from a prompt.
Send SMS and WhatsApp alongside email
The Email + SMS plan adds SMS credits and multichannel sending, with WhatsApp and RCS among the channels Klaviyo lists.
Answer customer questions with an AI agent
Customer Agent supports and sells using your data. It is a separate line on the pricing page.
Ask Claude about campaign performance
Connect the Klaviyo MCP server to report on campaigns, inspect profiles and manage flows from an assistant.
AI, API & MCP
Does Klaviyo Have an MCP Server, API and AI Features?
Klaviyo is one of the more agent-ready commerce platforms, with an official hosted MCP and a read-only switch.
AI agent workflow
A safe agent workflow
Start read-only: have an assistant report campaign and flow performance and inspect segments, then draft changes for you to apply.
Approval boundary: Keep sends, SMS campaigns and profile changes behind a human click. SMS spends credits and reaches customers directly.
MCP
officialOfficial hosted MCP with a read-only setting
Documented in Klaviyo's developer docs, with agency guidance in its help center.
Klaviyo MCP server →Pricing
How much does Klaviyo cost?
Klaviyo is free to 250 profiles and 500 emails a month. The Email plan is reported at $20/month at 500 profiles and Email + SMS from $35.
| Plan | Reported USD prices, unconfirmed on the official page |
|---|---|
| Free, 250 profiles | Free |
| Email, 500 profilesPopular | $20/mo |
| Email + SMS, 500 profiles | $35/mo |
Klaviyo prices by active profiles, meaning people who may receive marketing emails, and by channel. The official pricing page lists product lines (Marketing, Data + Analytics, Service, Composer, Customer Agent, Professional Services, Enterprise) and reveals paid prices through a plan estimate. The ladder below is reported by third-party trackers and I could not confirm it on Klaviyo's own page.
Reported profile ladder for the Email plan
Third-party trackers report $20 at 500 profiles, $30 at 1,000, $100 at 5,000, $150 at 10,000, $400 at 25,000, $720 at 50,000 and about $2,300 at 250,000. Email + SMS adds roughly $15 a month at each tier for SMS credits.
Free plan limits
Up to 250 profiles, 500 emails a month, $5 of mobile messages and $5 of Composer usage a month, with email support for the first 60 days. You can stay on it indefinitely within the limits.
Billing is monthly and downgrades need lead time
Klaviyo plans renew monthly. Downgrade more than 24 hours before your billing cycle turns over, and note that Klaviyo does not refund a mid-cycle downgrade.
Extras are priced separately
Service, Composer, Customer Agent and professional services are separate lines, and SMS credits are consumed as you send.
Alternatives
When I'd choose something else
Three different buying priorities, and what I'd pick instead for each one.
If you want one plan priced by list size
Drip
Drip sells one plan with everything included and prices by list size, with an official MCP connector.
Trade-off: It has a smaller integration and template ecosystem than Klaviyo.
Explore Drip for this use case →If omnichannel messaging drives your store
Omnisend
Omnisend is built around email, SMS and push for ecommerce in one automation builder.
Trade-off: Compare its tiers and SMS pricing at your profile count before switching.
Explore Omnisend for this use case →If you are not an ecommerce store
Brevo
Brevo covers marketing and transactional email across many business types.
Trade-off: It has less customer-data depth for stores than Klaviyo.
Explore Brevo for this use case →Keep going
- Compare Klaviyo against the field: 10 Best Email Marketing Tools for Ecommerce (2026)
- Compare Klaviyo against the field: 15 Best AI-Native Email Marketing Software (2026)
- Put it to work: The State of AI-Agent Readiness in Marketing Software (2026)
- Put it to work: Cold Email vs Email Marketing Software: Which One Your Team Needs
Downsides
Limitations to consider before subscribing
The bill grows with active profiles
Reported prices move from $100 at 5,000 profiles to $400 at 25,000 and $720 at 50,000, and there is a steep stretch between 10,000 and 25,000.
Paid prices are behind a calculator
Klaviyo's page shows the free plan and product lines, and asks you to build a plan estimate for paid prices.
The free plan is small
250 profiles and 500 emails a month, with 60 days of email support.
No mid-cycle refunds
Klaviyo does not refund a mid-cycle downgrade and plans renew monthly.
AI agents add cost lines
Composer and Customer Agent are separate pricing lines beyond the free Composer credit.
My Recommendation
Should You Choose Klaviyo?
Shortlist Klaviyo if you run an ecommerce store that wants deep customer data, flows and SMS, and you can price your active profile count.
Choose Drip for one plan, Omnisend for omnichannel ecommerce, or Brevo if you are not a store.
What to check during the trial
- –Build a plan estimate at your real active profile count, with and without SMS.
- –Start on the free plan and connect the store before you upgrade.
- –Check how many profiles count as active and how that compares with your list.
- –Ask which AI products you would pay for beyond the free Composer credit.
Try the Klaviyo MCP
Connect the hosted MCP read-only, ask for last month's flow performance, then decide whether to allow writes.
FAQ
Frequently asked questions about Klaviyo
Klaviyo is free to 250 profiles and 500 emails a month. Third-party trackers report the Email plan at $20/month at 500 profiles, $100 at 5,000 and $400 at 25,000, and Email + SMS from $35. Klaviyo's own page shows paid prices through a calculator.
Yes, indefinitely within 250 profiles, 500 emails a month, $5 of mobile messages and $5 of Composer usage, with email support for 60 days.
Yes. Klaviyo runs an official hosted MCP server at mcp.klaviyo.com/mcp with a read-only setting.
Klaviyo does not refund a mid-cycle downgrade. Plans renew monthly, and you should downgrade more than 24 hours before the cycle turns over.