Klaviyo

About Klaviyo

Financials

Dated, source-cited figures. Estimates are marked.

Products by Klaviyo

All products by Klaviyo reviewed by our AI panel of experts.

KlaviyoAI Sales Tools

B2C CRM for email, SMS, and WhatsApp marketing automation

From $45/mo7.7/10

How Our Review Panel Scores Klaviyo

Six independent reviewer personalities assessed Klaviyo's product on their own terms. They disagreed by 3.9 points — The Skeptic was the hardest to convince, The Decision Maker the most positive.

Averaged across 1 reviewed product in our catalog. Scores are out of 10.

Competitive Landscape

Who Klaviyo competes with, and how they differ.

Mailchimp7.7/10

Broader, cheaper email/marketing suite competing for the same SMB e-commerce segment, but lacks Klaviyo's native SMS and CDP-depth of behavioral segmentation built specifically around Shopify/e-commerce data.

1 product reviewed on TopReviewed

Attentive7.9/10

SMS-first marketing platform that directly overlaps with Klaviyo's SMS channel, competing specifically for text-message-led customer acquisition and retention budgets.

1 product reviewed on TopReviewed

Bloomreach7.8/10

Enterprise-grade commerce personalization and search platform aimed at larger retailers, competing with Klaviyo as it pushes upmarket into bigger e-commerce accounts.

1 product reviewed on TopReviewed

Braze8.0/10

Enterprise customer engagement platform used by larger, often app-first/mobile-push-heavy brands, competing with Klaviyo as companies scale past pure e-commerce use cases.

1 product reviewed on TopReviewed

Brevo7.9/10

Budget email/SMS marketing automation platform (formerly Sendinblue) that undercuts Klaviyo on price for smaller merchants who don't need deep e-commerce data modeling.

1 product reviewed on TopReviewed

Company Timeline

Key milestones in Klaviyo's history, with sources.

1. Aug 5, 2026Acquisition

   Acquired Agency, Elias Torres named Chief Product Officer

   Klaviyo agreed to acquire the team and technology of Agency, an AI-native customer-success startup led by co-founder Elias Torres (also a Drift co-founder), who joins as Chief Product Officer to lead Klaviyo's AI agent products.

   techcrunch.com
2. Aug 19, 2025Acquisition

   Acquired Gatsby for social commerce automation

   Klaviyo acquired Gatsby, a social automation product that converts brand engagement on social channels into owned email/SMS customer relationships.

   martech.org
3. Sep 20, 2023Milestone

   IPO on NYSE (KVYO)

   Klaviyo priced its IPO at $30/share, above the expected range, and shares rose about 23% on debut, valuing the company at roughly $9.2 billion.

   cnbc.com
4. May 18, 2021Funding

   Series D — $320M led by Sands Capital at $9.15B valuation

   Klaviyo raised $320 million in a Series D round led by Sands Capital, valuing the company at $9.15 billion pre-money and bringing total funding to over $675 million.

   prnewswire.com
5. Nov 17, 2020Funding

   Series C — $200M led by Accel at $4.15B valuation

   Klaviyo raised $200 million in a Series C round led by Accel with participation from Summit Partners, valuing the company at $4.15 billion.

   techcrunch.com
6. Apr 8, 2019Funding

   Series B — $150M entirely from Summit Partners

   Klaviyo raised $150 million in Series B funding, the entire round coming from Summit Partners, after building the company profitably without outside capital for its first several years.

   techcrunch.com
7. 2012Founded

   Founded by Bialecki and Hallen

   Klaviyo was founded in 2012 by Andrew Bialecki and Ed Hallen in Boston, building email/SMS marketing automation for e-commerce brands.

   forbes.com