193,000+
paying customers in 80+ countries
About Klaviyo
The B2C CRM
Klaviyo is the AI-first CRM built for B2C brands. Powered by its built-in data platform and AI insights, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster.
How it started
Built to solve the customer data problem
In 2012, Klaviyo co-founders Andrew Bialecki and Ed Hallen saw a frustrating pattern: consumer brands were sitting on mountains of data but couldn’t use it to personalise experiences or drive revenue.
The tech to unite data, analytics, and marketing didn’t exist. So they built it.
Today, 193,000+ brands worldwide use Klaviyo not just to sell but to create lifelong customer relationships.
“At Klaviyo, we’ve always believed that building customer relationships starts with your data—and it shouldn’t be complicated. We help businesses of all sizes unlock the full potential of their data to build lifelong relationships and grow smarter, faster, and without compromise. That’s the power of customer-first data.”
—Andrew Bialecki, Klaviyo co-founder and CEO
How Klaviyo has evolved
A data-first platform from day one. Now a unified B2C CRM.
2012: Klaviyo is founded as a customer database.
2013: Email marketing launches.
2018: Marketing attribution and optimization launches.
2021: SMS marketing launches. 7.5 billion emails sent during BFCM.
2023: Reviews launches.
2023: CDP launches.
2025: B2C CRM launches: unifying data, marketing, service, and analytics.
2,000+
Klaviyos worldwide
2+ billion
daily events processed
7+ billion
customer profiles managed
Andrew Bialecki
Co-founder and chief executive officer
Chano Fernandez
Co-CEO
Ed Hallen
Co-founder and chief strategy officer
Surabhi Gupta
Chief technology officer
Landon Edmond
Chief legal officer
Amanda Whalen
Chief financial officer
Jamie Domenici
Chief marketing officer
Emily McEvilly
Chief customer officer
Eric Fearday
Chief revenue officer
Carmel Galvin
Chief people officer
Offices
Boston (Global Headquarters)
125 Summer Street, Floor 6
Boston, MA 02111
Denver
1200 17th Street, Floor 25
Denver, CO 80202
San Francisco
181 Fremont Street, Floor 21
San Francisco, CA 94105
London
5th Floor, 106 Fenchurch Street
London EC3M 5JD
United Kingdom
Dublin
WeWork, One Central Plaza, Dame Street
Dublin 2, D02 A4W7
Ireland
Sydney
Level 17, 420 George Street
Sydney NSW 2000
Australia
What’s with the name?
Klaviyo (clay-vee-oh) is inspired by clavija, a Spanish word for
mountaineering pins—also called pitons. These pitons support
climbers as they ascend, and catch them if they fall.
We liken our customers to mountaineers. Our goal is to support and accelerate their climb to the summit.