Klaviyo

Klaviyo is a marketing automation and customer data platform founded in 2012 in Boston by Andrew Bialecki and Ed Hallen. The platform combines email, SMS, mobile push, and reviews with a built-in customer data platform aimed primarily at e-commerce brands.

Klaviyo serves more than 167,000 customers including Chubbies, Living Proof, and Nomad. It is tightly integrated with Shopify, which holds a significant equity stake.

Klaviyo went public on the NYSE in September 2023 (KVYO). Andrew Bialecki continues as CEO. The company generates over $1 billion in annual revenue.