
Reimagining Retention Through Customer Psychology | Sonja Grasser | Retention Theory | Bonus Episode
Sonja Grasser is the Founder of Retention Theory, a consultancy helping CPG brands turn one-time buyers into loyal repeat customers through data-driven retention systems. With a background that spans law school, 60+ countries of travel, and hands-on work with brands like MaryRuth’s Organics, Sonja brings a uniquely behavioral approach to customer retention: rooted in psychology, not playbooks.
After landing in retention by accident as a German-speaking marketer, Sonja discovered her passion for understanding why customers buy, not just what they buy. Her global perspective and analytical…
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