What Is Klaviyo? Features, Pricing & Who It's For

Quick answer: Klaviyo is an ecommerce marketing platform for email and SMS, built around your store’s customer data. It connects to platforms like Shopify and WooCommerce, unifies every order, view, and click into customer profiles, and uses that data to power automated flows, targeted campaigns, and predictive analytics. It’s best for ecommerce brands that want to drive revenue from email and SMS; it’s less suited to non-ecommerce or pure-CRM use cases.

Key takeaways

• Klaviyo is an email + SMS platform for ecommerce, centered on customer data.
• Its edge is data depth: real-time profiles, predictive analytics, deep segmentation.
• Free up to 250 contacts; paid plans scale with active profiles.
• Best for DTC ecommerce brands; less ideal for B2B/CRM-heavy or non-ecommerce use.
• Most brands choose it for its flows and revenue attribution.

New to Klaviyo and want the plain-English overview? Here’s what it is, what it does, and whether it’s right for you.

What Klaviyo is (definition)

Klaviyo is a unified email and SMS marketing platform purpose-built for ecommerce, organized around a customer-data platform (CDP). Instead of treating email as a standalone tool, it ingests your store’s data — purchases, browsing, engagement — and turns it into targeted, automated messaging. That data-first design is what separates it from general email tools.

Key features

• Unified email + SMS — one platform, shared flows and segments.
• Real-time customer data — every order, view, and click on each profile.
• 60+ prebuilt flows — cart, welcome, browse, post-purchase, winback, and more.
• Predictive analytics — customer lifetime value, churn risk, predicted next order.
• Deep segmentation — target by behavior, value, and lifecycle.
• Native platform integrations — two-way sync with Shopify, WooCommerce, and others.

For how to actually use these, see our how to use Klaviyo beginner guide.

Pricing snapshot

Klaviyo is free up to 250 contacts (500 email sends/month). Paid email plans start around $20/month and scale with your number of active profiles; SMS is billed on top by volume. Full detail — including how to control your bill — is in our Klaviyo pricing guide.

Pros and cons

Pros

• Best-in-class ecommerce flows and data depth.
• Predictive analytics most competitors lack.
• Unified email + SMS in one platform.
• Strong native integrations with ecommerce platforms.

Cons

• Pricier than basic tools, and billing on stored profiles can creep up.
• A learning curve — it’s powerful, which means more to learn.
• Overkill for non-ecommerce or occasional senders.

Who Klaviyo is best for

Klaviyo is best for DTC ecommerce brands — especially on Shopify or WooCommerce — where email and SMS are meaningful revenue channels. If you want to turn customer data into automated revenue, it’s the category leader. It’s a weaker fit if you’re a service business needing a sales CRM, or a tiny list sending occasional newsletters — those users may prefer a cheaper or CRM-focused tool, as we cover in Klaviyo alternatives.

How to get started

Start free, connect your store, build a signup form, and turn on a welcome and abandoned cart flow. You can prove the ROI on the free plan before you ever pay.

Frequently asked questions

What does Klaviyo do?

Klaviyo runs email and SMS marketing for ecommerce. It syncs your store’s customer data, then uses it to send automated flows (like abandoned cart) and targeted campaigns, with predictive analytics and deep segmentation built in.

Is Klaviyo just for email?

No. Klaviyo unifies email and SMS in one platform, so both channels share flows, segments, and reporting. It’s also a customer-data platform under the hood, which powers its segmentation and predictions.

Who should use Klaviyo?

DTC ecommerce brands — especially on Shopify or WooCommerce — where email and SMS drive meaningful revenue. It’s less suited to B2B/CRM-heavy businesses or very small lists sending occasional newsletters.

Is Klaviyo free?

Klaviyo has a free plan for up to 250 contacts and 500 email sends per month, with full features. Paid plans scale with your number of active profiles, starting around $20/month for email.

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About the author

Ravinder is the founder of Excelohunt, a Klaviyo-focused email & SMS agency that helps ecommerce brands get the most from the platform.

Ready to make Klaviyo work? See how we run it for brands.