Zero-party versus first-party
First-party data is what you observe from customers' behavior on your own channels, like pages viewed and purchases. Zero-party data is what they tell you outright, for example by answering a quiz or setting preferences.
Ways to collect it
Product finder quizzes, preference centers, short surveys at signup, post-purchase questions and account profile fields. Offer a clear benefit in return, like better recommendations or relevant offers.
Using it well
Use the answers to personalize emails, product suggestions and ads. Store it with clear consent, and only ask for what you will actually use.
Why Zero-Party Data matters
Zero-party data is accurate, consented and not affected by browser tracking limits. It helps you personalize marketing in a way customers expect and welcome.
A quiz that shaped every email
A skincare brand added a short skin-type quiz to its site. Customers who took it got product suggestions and emails matched to their answers, and those emails earned more clicks than the brand's general newsletter.
Common mistakes
Asking too much at once
Long forms drive people away. Ask a few questions now and more later.
Collecting and ignoring
If people share preferences and still get generic emails, trust drops. Use what you ask for.
Unclear consent
Explain how you will use the answers and let people update them.
Where we work on this