# Klaviyo

Klaviyo (NYSE: KVYO) is an ecommerce email and SMS marketing platform rated 4.6/5 on G2 and Capterra. Profile: revenue, pricing, funding, and leadership.

**Category:** Email and SMS marketing platform for ecommerce  
**Vendor:** Klaviyo, Inc.  
**Founded:** 2012  
**HQ:** Boston, Massachusetts, US  
**Website:** https://www.klaviyo.com  


## About

Klaviyo is a marketing automation platform built specifically for ecommerce brands, offering email marketing, SMS, push notifications, and a customer data platform in one product. It was founded in 2012 in Boston, Massachusetts by Andrew Bialecki and Ed Hallen, who previously worked at the database company Performant and designed Klaviyo from the ground up around real-time behavioral data rather than batch-and-blast email lists. Klaviyo's native Shopify integration, which syncs order history, product catalog, and browse behavior in real time, became the product's defining competitive advantage and the reason it displaced Mailchimp as the default email tool for Shopify merchants. The company went public on the New York Stock Exchange under the ticker KVYO in September 2023, reporting approximately $937 million in full-year 2024 revenue, up roughly 35% year over year. As of 2025 Klaviyo serves more than 157,000 paying accounts across 80+ countries. Shopify is both a major shareholder and a distribution partner, holding a stake from a 2022 partnership agreement.

## Ratings

| Source | Score | Reviews |
|---|---|---|
| G2 | 4.6/5 | 1,082 |
| Capterra | 4.6/5 | 461 |
| Gartner Peer Insights | 4.4/5 | 53 |
| TrustRadius | 8.8/10 | 203 |

## Funding

~$778M across 7 rounds before its 2023 IPO

| Round | Amount | Date | Lead |
|---|---|---|---|
| Seed | $1.5M | 2012 | Atlas Venture |
| Series A | $15M | 2015 | Summit Partners |
| Series B | $150M | Jan 2021 | Sands Capital (at ~$4.15B valuation) |
| Strategic | $100M | Aug 2022 | Shopify (at $9.15B valuation) |
| Series C | $320M | May 2022 | Apax Digital, existing investors |
| IPO | ~$345M raised (NYSE: KVYO) | Sep 2023 | Public offering at $30/share |

## Viability

Very low risk. Klaviyo is a publicly traded company on the NYSE (KVYO) with approximately $937 million in FY2024 revenue, up 35% year over year, and has reached non-GAAP operating profitability. The Shopify partnership is both a distribution engine and a strategic moat: Klaviyo is the top-rated email app in the Shopify App Store, and Shopify's stake aligns incentives. The risk to watch is platform concentration: Klaviyo is heavily dependent on Shopify as a distribution channel, and any shift in Shopify's partner strategy (including its own email product, Shopify Email) could affect growth. Geographic and B2B expansion address this, but dependency remains higher than most public SaaS companies at this revenue level.

## Pricing

Klaviyo's free plan is real: 500 contacts, 500 email sends per month, and 150 free SMS credits. Most brands outgrow it fast. Paid email plans scale by contact count, running roughly $20/mo for 500-1,000 contacts, $60/mo at 5,000 contacts, and $150/mo at 15,000 contacts. SMS is billed separately per message, typically $0.01-0.02/SMS in the US. The total cost comparison to ActiveCampaign or Mailchimp depends heavily on your contact list size and SMS volume. For Shopify brands doing $500K+ in annual revenue, the revenue attribution data typically justifies the cost. Below that threshold, Mailchimp's lower pricing floor wins on pure economics.

| Plan | Price | Best for |
|---|---|---|
| Free | $0 | Up to 500 contacts, 500 email sends/mo, 150 SMS credits; testing flows before committing |
| Email | From ~$20/mo (1,000 contacts) | Growing ecommerce brands needing full automation, segmentation, and revenue reporting |
| Email + SMS | From ~$35/mo (1,000 contacts, 1,250 SMS credits) | Brands running combined email and SMS campaigns with shared contact profiles |
| Enterprise | Custom | High-volume senders, large catalogs, custom data models, dedicated support, and SSO |

## What reviewers say

_1,082 G2 reviews at 4.6/5 and 461 Capterra reviews at 4.6/5, plus Gartner and TrustRadius_

**Praised:**
- Ecommerce data integration is the standout strength: Shopify order history, browse abandonment, and product catalog sync in real time, making segmentation and flow triggers far more precise than most ESPs
- Revenue attribution is cited as the most actionable in the market; reviewers describe being able to tie specific email flows to specific revenue dollars with a level of confidence no other tool provides
- The pre-built flow library for ecommerce (abandoned cart, welcome series, post-purchase, winback) gives new users a working automation setup in hours rather than days

**Complaints:**
- Pricing scales steeply with contact count and becomes noticeably expensive for brands with large lists but lower average order values; reviewers with 100,000+ contacts frequently cite sticker shock
- The email template editor, while functional, is criticized as less flexible than Mailchimp or Campaign Monitor for marketers who want pixel-precise layout control without coding
- Customer support response times on lower tiers are a recurring complaint; email-only support for Free and Starter plans can mean 24-48 hour waits during high-traffic periods

## Compliance

- **SOC 2:** Yes (SOC 2 Type II)
- **GDPR:** Yes
- **HIPAA:** No (Klaviyo does not offer HIPAA compliance)
- **SSO:** Yes (Enterprise plan)

## Integrations

- Shopify
- WooCommerce
- BigCommerce
- Magento
- Facebook Ads
- Google Ads
- Recharge (subscriptions)
- Gorgias
- Yotpo
- Attentive

## FAQs

### Is Klaviyo free?

Yes, Klaviyo offers a permanent free plan for up to 500 contacts and 500 email sends per month, plus 150 free SMS credits. It is not a trial and does not expire. The free plan includes access to automation flows, segmentation, and basic analytics. Most actively growing ecommerce brands exceed the free limits within a few months and move to a paid email plan starting around $20/mo.

### Is Klaviyo only for Shopify?

No, but Shopify is Klaviyo's dominant integration and the pairing it is built around. Klaviyo also integrates natively with WooCommerce, BigCommerce, Magento, and dozens of other ecommerce platforms. The Shopify integration is the deepest: real-time order sync, back-in-stock triggers, and one-click install. On other platforms the data sync is solid but typically requires more manual configuration.

### How does Klaviyo compare to Mailchimp?

Klaviyo is purpose-built for ecommerce with deeper behavioral data, better revenue attribution, and tighter integrations with Shopify and WooCommerce. Mailchimp is a general-purpose email tool with a lower price floor and a broader audience including non-ecommerce businesses. For a DTC brand doing more than a few thousand monthly orders, Klaviyo's data fidelity typically wins. For a local business or non-ecommerce brand, Mailchimp costs less and is simpler to operate.

### Is Klaviyo a public company?

Yes. Klaviyo, Inc. trades on the New York Stock Exchange under the ticker KVYO, having gone public in September 2023 at $30/share. The company reported approximately $937 million in full-year 2024 revenue, up 35% year over year, and reached non-GAAP operating profitability for the full year. Shopify is a significant shareholder following a 2022 strategic investment.

### Who is Klaviyo best for?

Klaviyo is the default choice for DTC and ecommerce brands on Shopify or other major platforms that want sophisticated email and SMS automation driven by real purchase and browse data. It is strongest for brands doing $500K to $50M in annual ecommerce revenue. Very early-stage brands with tiny lists will find the free plan sufficient and Mailchimp cheaper to grow into. Enterprise brands with complex multi-brand or multi-region setups should evaluate the Enterprise tier's data model flexibility before committing.


## Sources

- [G2: Klaviyo reviews](https://www.g2.com/products/klaviyo/reviews): rating 4.6/5, 1,082 reviews, read live
- [Capterra: Klaviyo](https://www.capterra.com/p/143787/Klaviyo/): rating 4.6/5, 461 reviews, sub-scores, demographics, pricing
- [Gartner Peer Insights: Klaviyo](https://www.gartner.com/reviews/market/email-marketing/vendor/klaviyo/product/klaviyo): rating 4.4/5, 53 ratings
- [TrustRadius: Klaviyo](https://www.trustradius.com/products/klaviyo/reviews): score 8.8/10, 203 reviews
- [Klaviyo IR: FY2024 earnings](https://ir.klaviyo.com/): FY2024 revenue ~$937M, 157,000+ paying accounts, non-GAAP profitability
- [Wikipedia: Klaviyo](https://en.wikipedia.org/wiki/Klaviyo): founding, founders, HQ, IPO, Shopify partnership
- [Crunchbase: Klaviyo](https://www.crunchbase.com/organization/klaviyo): ~$778M total funding before IPO, investor list
- [LinkedIn: Klaviyo company page](https://www.linkedin.com/company/klaviyo/about/): industry, company size, HQ, specialties, employee count