Klaviyo, Inc.

Overview

Klaviyo, Inc. is a software company providing a B2C CRM and customer-engagement platform, with a core customer base in retail and e-commerce and customers in sectors including education, entertainment, restaurants, travel and B2B. Its platform brings together consumer data and tools for email, text messaging and WhatsApp, reviews, customer service, analytics and AI-powered features. The company’s stated purpose is to empower brands to build personalized customer relationships, and it was founded in 2012.[1]+3

Klaviyo reported more than 205,000 customers and 2,400 employees as of June 30, 2026. Its operations span North America, the UK, Australia, Ireland, Singapore, France and Canada, and FY2025 revenue was $1.234 billion.[5]+3 [1]+7

Products & services

Klaviyo’s core offering is its B2C CRM platform, which combines marketing, customer service, analytics and the Klaviyo Data Platform (KDP). KDP brings together real-time and historical consumer data to support customer-profile unification, data enrichment and transformation, reporting, predictive analysis and data synchronization.[9][10]

Its messaging products include email, text messaging, RCS and WhatsApp. Email tools support personalized campaigns and automated workflows, templates, A/B testing, behavioral and predictive audience segmentation, Smart Send Time, and generative-AI content and subject-line features. Text supports targeted campaigns, promotions, alerts and reminders; RCS adds branded interactive media and can fall back to SMS where RCS is unavailable. WhatsApp supports personalized, real-time customer interactions, and these channels can be combined in omnichannel flows using shared customer data.[11][12]

Other named offerings include mobile app marketing, which enables personalized push notifications for iOS and Android; Marketing Agent, which can generate on-brand campaigns, flows and signup forms; and Customer Agent, which provides around-the-clock digital-channel support and assists customers with questions, product discovery and purchases. Klaviyo Social uses social engagement data to support audience growth and advertising synchronization, while Reviews collects product reviews alongside customer data and messaging and offers AI-suggested review headlines and replies.[13]+5 Agencies, systems integrators, freelancers and consulting partners also help customers design, operate and measure campaigns and provide strategic guidance.[19][20]

Klaviyo reported total revenue of $1,234.0 million in 2025, up 31.6% year over year; first-half 2026 revenue was $728.6 million, up 27.2% from the first half of 2025. The company reports one operating and reportable segment and does not disclose revenue shares for individual products, so these figures are company-wide rather than product-specific.[8]+2 [9]+14

Geographic presence

Klaviyo’s 2025 revenue was geographically distributed across the United States ($741.1 million; 60.1%), the United Kingdom ($123.6 million; 10.0%), other EMEA ($182.5 million; 14.8%), APAC ($127.2 million; 10.3%) and other Americas ($59.6 million; 4.8%). These percentages are calculated from reported revenue by customer location; the filing does not provide country-level figures within the regional categories.[23][24]

The company is headquartered in Boston and reports U.S. employees beyond its headquarters, with offices in the UK, Australia, Ireland, Singapore and France.[25][26] Klaviyo has also identified London, Sydney and Dublin as office locations, and announced its Singapore Asia headquarters in 2026.[27]+2 As of June 30, 2026, it reported 2,400 employees overall; its Singapore announcement said the APAC team exceeded 150 people, including more than 25 in Singapore, but no full employee distribution by country or region is reported.[6][29] [23]+10

Business segments

Klaviyo reports one operating segment and one reportable segment. Its latest available 2026 filing says the chief operating decision maker reviews consolidated financial information; the company does not identify separately named business or product segments or report contribution percentages for subsegments. Accordingly, its single reportable segment comprises consolidated operations, with no separate segment mix disclosed.[22]

The company describes its platform as supporting marketing, customer service, analytics, and data-platform functionality, but these are capabilities rather than separately reported segments.[30][31] [22]+2

Company history

Klaviyo was founded in 2012 by Andrew Bialecki and Ed Hallen, initially as a customer database. The company dates the launch of its email-marketing product to 2013, and later expanded its marketing capabilities with attribution and optimization tools in 2018.[32]+2

Klaviyo added SMS in 2021, then expanded into Reviews and a customer data platform in 2023. It launched its IPO in September 2023 and subsequently reported its first quarter as a public company.[34]+3 In 2024, it introduced Klaviyo AI; in 2025, it announced B2C CRM and released AI-based marketing and customer-service agents.[37]+2 Chano Fernández became co-CEO alongside co-founder Bialecki effective January 2026.[38] In August 2026, Klaviyo announced an agreement to acquire the team and technology of customer-success company Agency; the announcement described a proposed transaction.[39] [32]+14

Sources

• Klaviyo, Inc. — Full financial report (2026 Q 2)
  9 citations

  [1][2][5][6][7][21][22][25][26]
• www.klaviyo.com[3]
• investors.klaviyo.com[4]
• Klaviyo, Inc. — Full financial report (2025 Y)
  17 citations

  [8][9][10][11][12][13][14][15][16][17][18][19][20][23][24][30][31]
• www.klaviyo.com[27]
• www.klaviyo.com[28]
• www.klaviyo.com[29]
• Klaviyo, Inc. — Ipo (2023 O)
  3 citations

  [32][33][34]
• www.klaviyo.com[35]
• investors.klaviyo.com[36]
• Klaviyo, Inc. — Full financial report (2024 Y)[37]
• www.klaviyo.com[38]
• Klaviyo, Inc. — Press release (2026 Q 2)[39]