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Clerk.io vs Retention Science

People

Clerk.ioE-Commerce Personalization

Retention ScienceE-Commerce Email Marketing

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Offer

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E-Commerce Personalization

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E-Commerce Personalization

Overview

Focus

E-Commerce Personalization

E-Commerce Email Marketing

Product

Clerk.io provides AI product recommendations, site search, email personalization, and audience segmentation for online retailers.

AI-powered email marketing platform using predictive analytics for personalized product recommendations.

Website

Headquarters

Copenhagen, Denmark

Santa Monica, California

Company size

51-200 employees

11-50 employees

Founded

2011

2012

Pricing details

Free options

Free trial

Source updated

Oct 29, 2026

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