Clerk.io

Leading AI personalization platform for European mid-market e-commerce, competing on ease of use, integration breadth, and transparent pricing

Clerk.io is a Danish e-commerce personalization company founded in 2011, offering a suite of AI-driven tools designed to help online retailers increase revenue through smarter customer experiences. Its core platform leverages machine learning to deliver real-time product recommendations, intelligent site search, and personalized email campaigns — all aimed at increasing basket size, reducing bounce rates, and improving overall conversion rates. The company serves thousands of e-commerce businesses across Europe and beyond, positioning itself as a comprehensive personalization engine that integrates seamlessly with major e-commerce platforms. Clerk.io's product portfolio spans several key areas: Search (AI-powered on-site search with autocomplete and filtering), Recommendations (behavioral product suggestions across the shopping journey), Email (personalized product content in automated email flows), and Audience (segmentation and analytics tools). The platform is particularly strong in the European mid-market e-commerce segment, where it competes with global players like Nosto, Algolia, and Bloomreach by offering ease of integration, transparent pricing, and strong customer support. Within the AdTech and MarTech ecosystem, Clerk.io occupies the intersection of e-commerce personalization and conversion rate optimization. Its significance lies in democratizing AI-driven personalization for small-to-mid-sized retailers who may lack the engineering resources to build such capabilities in-house. The company has built a robust partner network with major e-commerce platforms including Shopify, Magento, WooCommerce, and Shopware, making it accessible to a wide range of merchants.