The round included participation from Accomplice and select angels, including David Cancel, Elias Torres and TJ Mahoney. Founded in 2012, Klaviyo has developed a system that analyzes disparate and often real-time data points, about individual customers and prospects, in order to automate personalized communications. The solution is being used at thousands of ecommerce companies to maximize return on email campaigns; and Klaviyo will use the new funding to accelerate growth in development and sales/marketing.

'Email campaigns have become synonymous with mass blasting giant lists of people with the same email, leading to a world where our inboxes are crowded, spam folders full, and we don't engage with or like the emails we receive,' said Andrew Bialecki, co-founder and CEO of Klaviyo. 'Klaviyo solves this problem. We plug into different data sources that companies already have and use that data to personalize communications to customers and prospects. We are excited that our investors share our vision for transforming ecommerce marketing.'

Almost a trillion emails are sent each month. Current email platforms are primarily focused on sending large quantities of messages that are the same for everyone, with very little personalization. Through its simple and intuitive API, Klaviyo integrates with an ecommerce company's data sources to better understand their customer's relationship with the brand (i.e. what they have or haven't bought, website activity, engagement with previous communications, events attended, products returned and more). As a result, the Klaviyo platform understands the customer's behavior and can target and/or trigger personalized communications at the optimal time.

'Klaviyo has created a powerful email marketing platform that is incredibly easy to use; being able to run small, hyper-targeted, personalized campaigns is the holy grail for marketers,' said Jon Karlen, a partner at Accomplice. 'Andrew and Ed have already built a successful company and they are the perfect team to lead it through this rapid growth phase.'

Andrew Bialecki and Ed Hallen founded Klaviyo in 2012, after working together at Adaptive Predictive Technologies (APT) where they built big data-driven marketing solutions for Fortune 500 companies. 'We started working with companies and realized what a frustrating, manually-intensive process it was to email someone who had bought a suit two months ago but not the perfect matching shirt and tie. That's when the opportunity became clear,' said co-founder Ed Hallen. On average, Klaviyo's customers earn ~$75 for every dollar spent.

About Klaviyo
Klaviyo helps brands build stronger relationships with their customers through communications that are personal and predictive. For more information, visit www.klaviyo.com.