Klaviyo’s tracking relies heavily on browser cookies, frontend scripts, and app-side tracking. And that’s exactly where many abandonment events go missing. The result? Broken flows, missing data, and lost revenue.

Let’s break it down.

How Klaviyo tracks users (and where it breaks)

Klaviyo identifies users through three main methods.

• Clicking a tracked email (adds identifying parameters)
• Submitting a form (like a popup)
• Cookies in the browser

If a user doesn’t meet one of those conditions, they’re considered "unknown", even if you already have their email address.

And even when you do capture that data once, it’s easy to lose it again:

• Safari and iOS block or reset cookies by default
• Adblockers block tracking scripts
• Users browse in incognito or private windows
• Visitors return days later on a different device

The result?

• No triggered flows
• No personalization
• No product recommendations
• No abandoned cart or browse emails
• No Started Checkout events
• Missing metrics in your Klaviyo app

Real example: the Instagram browser trap

Here’s how this plays out in real life:

1. A visitor clicks your Instagram ad and lands in the in-app browser
2. They sign up via popup, you now have their email
3. Two days later, they return via Chrome on mobile
4. They browse more products, maybe even start checkout — and leave without buying

What happens?Klaviyo doesn’t recognize them. Different browser. No cookie. No email triggered. No activity tracked.

You miss a perfectly good opportunity to bring them back.

This scenario isn’t rare — it’s normal. And it explains why so many of your flows underperform.

If this sounds familiar, you might want to  check your browse abandonment flow and your abandoned cart flow setup.

The hidden cost of missing abandonment events

When Klaviyo can’t recognize who’s on your site:

• Flows don’t trigger (even when the email is known)
• Segments underperform
• Profiles fragment across sessions
• Personalization fails (e.g. "recently viewed" blocks are empty)
• Attribution breaks
• Klaviyo metrics become unreliable

This hurts:

• Email revenue
• Retargeting performance
• Customer experience
• Reporting accuracy in your Klaviyo dashboard

You’re not just missing out on one email. You’re breaking the continuity of the customer journey.

How TrackBee solves this

TrackBee fixes the root problem: missing event data due to identity loss.

🔍 Shopper profiles

TrackBee builds and maintains persistent shopper profiles by storing behavior and identifiers server-side. Once a user signs up, we associate their actions — even across devices or sessions — with their profile.

📡 Server-side event tracking

Our Viewed Product, Add to Cart and Started Checkout events aren’t dependent on cookies or frontend scripts. So even if a session looks anonymous to Klaviyo, TrackBee makes sure the event is attached to the right identity.

⟳ Flows get triggered again

As a result, your Klaviyo flows — browse abandonment, cart recovery, welcome, post-purchase — all trigger more consistently. Events are properly tracked, and data gaps are solved.

Final thought: Klaviyo can’t personalize what it can’t see

Flows. Segments. Product blocks. Benchmarks. They all depend on accurate, consistent event tracking and user recognition.

If Klaviyo doesn’t know what’s happening on your site, it can’t do its job.

TrackBee reconnects the dots.

👉 Try TrackBee for free and make sure your flows reach the right people — every time.

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