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Zero-party data in 2026: personalization customers agree to

Zero-party data is information customers deliberately share with you — sizes, preferences, goals. It’s accurate, explicit and a strong base for personalization.

StoreBuild editorial team · 6 min read

Published

Recommendations here are our editorial judgement from the documented facts — not rankings, test results or scores. We haven’t tested these platforms hands-on.

The idea

What zero-party data is

First-party data is what you observe about customers on your own channels, such as orders and browsing. Zero-party data is what customers tell you directly and on purpose: “I have curly hair,” “I prefer vegan products,” “email me about new arrivals in size M.”

Because people choose to share it, it’s usually accurate. It still counts as personal data in many jurisdictions: be clear about why you ask, use it only for that purpose and let people change or delete it.

This article is editorial guidance based on published documentation. We haven’t tested these features hands-on and don’t quote industry statistics we can’t trace to a reliable source.

How to collect and use it

  1. Offer value in exchange

    Product-finder quizzes, size helpers and preference centres give customers something useful for their answers.

  2. Ask only what you’ll use

    Every question should change what the customer sees or receives.

  3. Explain the purpose at the point of asking

    A short line such as “We’ll use this to recommend products in your size” builds trust.

  4. Store it on the customer record

    Attach answers to customer profiles or tags so segments and emails can use them.

  5. Personalize visibly

    Show recommendations and emails that reflect what people told you, so sharing feels worthwhile.

  6. Let people update or withdraw

    Provide an easy way to change preferences and to withdraw consent.

Based on official documentation

Tools for zero-party data by platform

Check current features and plans.

  • Built in
  • Needs an eligible paid plan
  • Via an app (may have its own fees)
  • Via a WordPress plugin or extension
  • Depends on your host
  • Your responsibility
Quizzes and preference forms
ShopifyVia apps (Via an app (may have its own fees))
WixVia Wix forms or apps — check current options (Your responsibility)
WooCommerceVia WordPress form or quiz plugins (Via a WordPress plugin or extension)
Segments from customer data
ShopifyCustomer segments (Built in)
WixCheck Wix’s current contact tools (Your responsibility)
WooCommerceVia plugins (Via a WordPress plugin or extension)

Zero-party data done right

General guidance, not legal advice.

  • Each question has a clear purpose shown to the customer.
  • Consent is recorded where you rely on it, and is easy to withdraw.
  • No sensitive questions (health, religion, finances) without a strong, lawful reason.
  • Answers visibly change what the customer receives.
  • Your privacy notice explains how preferences are used.

Making the call

Pick the platform that fits your data plans

Still unsure? Two minutes with our tools can narrow it down.

30-second quiz →Six quick taps, a needs-based match.✦ AI Advisor →Describe your store, get a reasoned recommendation.Cost calculator →Model monthly, first-year and three-year costs with your own figures.

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Common questions

Keep exploring

Official sources

Platform facts on this page reference the documentation below. Features, plans and availability change — check the provider before you decide.