What if brands were empowered to deliver personalized experiences online, just as well as they could do in a store? That's the idea that underpins Klaviyo, the leading customer and marketing automation platform. Andrew Bialecki cofounded Klaviyo in 2012 and now serves over 100,000 brands, helping them generate $28 billion in revenue for its customers in 2021 alone. Andrew shares why he bootstrapped the business until profitability, how early partnerships can be a key to efficient customer acquisition, and why he feels like he's only achieved 1% of Klaviyo's potential.