Klaviyo CDP: Anonymous Visitor Activity Backfilling (Explained)

How it works with Klaviyo.js; storage and consent; when events sync; use cases for segmentation and flows; privacy considerations.

With anonymous visitor activity backfilling, Klaviyo stores on‑site actions locally and syncs them once a visitor is identified (e.g., via a form or email click). This provides richer pre‑ID context to power segments and triggered messages. Ensure consent aligns with your cookie tool; sensitive data should use server‑side or delayed transmission.

Q1: Enabled by default?
A: No—toggle it in account settings.
Q2: Storage limits?
A: Local storage supports up to ~10,000 events (browser‑dependent).

We’ll configure CDP tracking and build segments that convert. Talk to VALIX.

© VALIX Ltd | All rights reserved | Company registration number: 16669690

Registered office: 167-169 Great Portland Street, 5th Floor, London, W1W 5PF

Trading address: Challenge House Business Centre, Sherwood Dr, Bletchley, Milton Keynes, MK3 6DP | Privacy Policy

sales@valix.digital

VALIX is CYBER ESSENTIALS CERTIFIED

Subscribe to our newsletter

By signing up, you agree to receive email communications from VALIX Ltd, including marketing updates, promotional offers, industry insights, and information about our products and services. You understand that your personal information will be handled in accordance with our Privacy Policy, and you may unsubscribe from these communications at any time by clicking the unsubscribe link included in our emails or by contacting us directly.

Join our newsletter for the latest insights & strategies

Resources | Klaviyo FAQs | Blog | Partners | Privacy Policy | About Us