Klaviyo has raised $672.0M in total across 4 funding rounds.
Klaviyo's investors include Accel, Alchemy Ventures, BMW i Ventures, Energy Impact Partners, Greylock, H.I.G. Capital, IDG Ventures, Ignition Partners, Next47, Owl Rock Capital Partners, Alexander Rosen, rocketship.vc.
Klaviyo is a technology company that builds a unified B2C CRM platform specializing in data-driven marketing automation for e-commerce brands.[2][1] It serves over 130,000 businesses, from small brands to enterprises like Mattel, Glossier, and Staples, by solving the problem of fragmented customer data—unifying it with tools for personalized email, SMS, reviews, and analytics to drive revenue through targeted engagement.[3][1] Klaviyo's mission is to empower brands to leverage customer data for deeper relationships and growth, democratizing advanced marketing so smaller players compete with giants; it processes data from billions of profiles and invests $50 million annually in customer support.[1]
The platform's growth momentum is strong: bootstrapped initially, it scaled to $140 million in revenue by 2022 with 1,500 employees, hit key milestones like SMS in 2021 and B2C CRM in 2025, and secured major backing including a $100 million Shopify investment in 2022.[7][2][5]
Klaviyo was founded in 2012 by Andrew Bialecki and Ed Hallen (with some sources noting Mike Senter as a third co-founder), both former colleagues at Applied Predictive Technologies (APT), where they gained expertise in stitching together data sources.[1][2][6] The idea emerged from observing e-commerce brands sitting on vast customer data—browses, transactions—but lacking tools to personalize marketing or build direct relationships amid shifting online retail dynamics away from third-party marketplaces.[2][4][7] Bialecki, with a background in business analytics and marketing tech, saw a friend's Shopify store highlight the need to merge e-commerce activity with email for segmentation and personalization.[7][3]
They bootstrapped for three years, writing all code themselves, firefighting issues like deliverability, and focusing on "owned revenue" as their north star metric through relentless customer experimentation.[4][6] Early traction came from product-market fit in email for Shopify users; by 2017, Hallen stepped back, Bialecki became CEO, and the company evolved from a customer database (2012) to full marketing automation, reaching paying customers quickly without initial VC.[2][6][5]
Klaviyo rides the e-commerce direct-to-consumer trend, where brands seek control over customer data amid marketplace dominance by Amazon/Shopify and algorithm volatility.[4][2] Timing was ideal post-2012, as online shifts amplified data silos; their early database bet positioned them as leaders in a fragmented $10B+ email/SMS market.[6][8] Market forces like rising personalization demands (driven by privacy regs and AI) and omnichannel needs favor them, with Shopify's 2022 investment cementing ecosystem influence—now recommended for Plus merchants.[5]
They shape the landscape by enabling "owned growth," helping 70,000+ brands (now 130,000+) bypass intermediaries, boost retention, and scale sustainably, redefining marketing as data-native CRM.[1][3][4]
Klaviyo, already a $4.15B email titan by 2021 valuation, will expand its B2C CRM into AI-enhanced service and predictive analytics, capitalizing on e-commerce's post-pandemic surge and zero-party data trends.[6][2] Regulatory shifts like GDPR/CCPA and competition from Braze/Mailchimp will test them, but their data moat and Shopify ties position for dominance. Influence evolves toward full-stack revenue platforms, empowering more brands to own customer lifecycles—echoing their founding quest to level the data playing field.[1][4]
Klaviyo has raised $672.0M across 4 funding rounds. Most recently, it raised $320.0M Series D in May 2021.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| May 1, 2021 | $320.0M Series D | Accel, Alchemy Ventures, BMW i Ventures, Energy Impact Partners, Greylock, H.I.G. Capital, IDG Ventures, Ignition Partners, Next47, Owl Rock Capital Partners, Alexander Rosen, rocketship.vc, Summit Partners, Systemiq Capital, Telstra Ventures, Wing Venture Capital | |
| Nov 1, 2020 | $200.0M Series C | Accel, BMW i Ventures, Energy Impact Partners, Greylock, IDG Ventures, Ignition Partners, Next47, Alexander Rosen, rocketship.vc, Summit Partners, Systemiq Capital, Telstra Ventures, Wing Venture Capital | |
| Apr 1, 2019 | $150.0M Series B | Next47, Summit Partners, Systemiq Capital | |
| Aug 1, 2015 | $2.0M Seed | Accomplice VC, Kleiner Perkins, Polaris Partners, Propeller VC, Rainfall Ventures, Republic Capital, Sierra Ventures, Ten Eleven Ventures, The Community Fund, Unusual Ventures, Vinyl Capital, Dharmesh Shah, Matt Mickiewicz, Ravi Grover, Ryan Wyatt |
