Case Study: Heist Studios achieves 66% increase in email revenue and 50% increase in repeat purchase rate with Klaviyo

How Klaviyo provided Heist Studios with a solution that gives them data to understand their customers and deliver personalized communications at scale

Heist Studios is a London-based DTC apparel brand that reinvented women's undergarments with performance-driven, stylish products. The company needed to decommoditize a premium product, acquire trial customers, and turn them into loyal repeat buyers — but their initial marketing platform (Mailchimp) lacked the data and personalization needed to understand lifecycle stages and scale bespoke communications.

Heist rebuilt its stack on BigCommerce and Klaviyo, using event-driven data, behavioral segmentation, personalized content, A/B testing and Trustpilot-driven social proof to power targeted email and lifecycle campaigns. The result: a 66% increase in revenue from email, a 50% increase in repeat purchase rate through personalization, and an 11% lift in average order value from a customer’s first to second purchase — fueling stronger loyalty and community-driven growth.

Heist Studios

Toby Darbyshire

Co-Founder and CEO