How a high-end fashion store unlocked $26K in extra Klaviyo revenue in 30 days.
Marielle Stokkelaar B.V. was reaching only part of their audience through email, because Klaviyo's standard tracking missed a big share of website activity. TrackBee captured the events Klaviyo could not see, and a whole group of customers became reachable again.
Privacy updates and hidden gaps in email tracking.
Like many e-commerce businesses, Marielle Stokkelaar B.V. felt the impact of iOS privacy updates on their advertising data quality. After Apple limited tracking, their Meta Event Match Quality scores dropped noticeably, and they needed a way to close the gap. For a business with substantial performance marketing spend, lower data accuracy directly hurts campaign optimization and ROI.
What the team did not initially realize was how much revenue they were losing on email. Klaviyo's standard tracking was not capturing all website events, especially abandoned cart interactions, so their email flows were not triggering for every potential customer.
"There was this whole group of customers that we just couldn't reach with our email marketing, because Klaviyo wasn't tracking their website activity. Now TrackBee captures those events and we can reach way more people through our email flows."
General Director
Marielle Stokkelaar B.V.
They had already tried other server-side tracking tools, with frustrating results. Those tools were complex and time-consuming to set up, needed constant maintenance, and delivered poor results.
"I tried other tracking solutions and they all had a complex and time-consuming setup, required lots of maintenance and delivered poor results. TrackBee was different. It delivers good results with an easy user interface and is just plug and play."
General Director
Marielle Stokkelaar B.V.
What we did
Plug-and-play server-side tracking and enrichment.
Marielle Stokkelaar B.V. was already searching for a tracking alternative when they found TrackBee's streamlined approach to server-side tracking and session enrichment. What stood out immediately was how simple it was to get running, in sharp contrast to the complex setups they had dealt with before.
"TrackBee was just plug and play. That works very well for us. There were so many potential manual errors that I could have created myself by using other solutions because I had to set up and configure so much."
General Director
Marielle Stokkelaar B.V.
TrackBee captures conversion events server-side and enriches them with first-party data before forwarding them. It was implemented across Marielle Stokkelaar's key channels: Meta, Google, Pinterest, and Klaviyo. The setup needed minimal technical work, so the team could stay focused on running their business rather than wrestling with tracking.
The support experience confirmed the choice. When the team had questions about the Klaviyo integration, TrackBee responded quickly and resolved everything, and the system has run smoothly without constant maintenance.
Results
Results that speak for themselves.
The biggest impact came from email. Klaviyo is only Marielle Stokkelaar's third channel after Meta and Google, yet it delivered the clearest, fastest return.
Klaviyo · revenue
+$26K
Around $26,564 (approximately EUR 24,596) in extra email revenue in 30 days, with no new campaigns or optimization.
Return on investment
10x+
The extra Klaviyo revenue alone gives a return of more than 10x on the TrackBee subscription cost.
Klaviyo · events
+85%
85% more abandoned cart events captured than Klaviyo alone, and Meta Event Match Quality scores improved across the board.
Tracked events
Abandoned cart revenue
Meta event quality
Klaviyo: a hidden revenue stream, unlocked
The most dramatic results came from the Klaviyo integration. TrackBee captured 85% more abandoned cart events than Klaviyo's standard tracking alone: 10,948 events with TrackBee versus 5,928 without. More tracked events meant more triggered email flows, and far more revenue opportunities.
Klaviyo · extra revenue captured with TrackBee
In just the last 30 days, TrackBee generated $26,564 (approximately EUR 24,596) in extra revenue through improved email marketing automation. Email via Klaviyo is only the third-most important channel after Meta and Google, yet without any additional work or campaign optimization, TrackBee unlocked this revenue stream.
"The additional revenue TrackBee generates gives us a ROI of more than 10x on our subscription cost. When a tool consistently delivers results like this just from email marketing, the decision to continue using it is straightforward."
General Director
Marielle Stokkelaar B.V.
Meta: Event Match Quality recovered
TrackBee's server-side tracking also delivered measurable improvements in Meta performance through higher Event Match Quality scores across key events:
Add to cart: rose from 4.3 to around 7.1
Initiate checkout: improved from 4.5 to 8.3
Purchase: increased from 8.1 to 9.3
Add payment info: increased from 4.3 to 9
Meta EMQ · before and after TrackBee
One of the most valuable parts of the rollout was revealing revenue the team did not know existed.
"The most concrete results I can point to are with Klaviyo. We suddenly had access to this huge group of customers that we couldn't reach before with our email marketing. TrackBee captures abandoned cart events that Klaviyo's standard tracking completely missed, which means our email flows are now triggered for customers we never even knew were interested in our products."
General Director
Marielle Stokkelaar B.V.
"We suddenly had access to this huge group of customers that we couldn't reach before. TrackBee captures the abandoned cart events Klaviyo missed, and that's translating directly into significant additional revenue."
General Director
Marielle Stokkelaar B.V.
Free for 30 days
Want an email revenue lift like Marielle Stokkelaar's?
Install TrackBee in minutes and run it alongside your current setup. See how many abandoned cart events Klaviyo is missing today, then decide.
Results measured over a 30-day window after Marielle Stokkelaar B.V. enabled TrackBee's Klaviyo integration. Extra revenue compares email performance with TrackBee against the prior Klaviyo-only baseline. Revenue converted from EUR to USD; Meta EMQ improvements measured against the pre-TrackBee baseline.
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Klaviyo · 30-day result
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