
Case Study: Demanding Better Data
How Mirai Clinical Revealed 55x Improved Identity Resolution with Customers.ai
Mirai Clinical, a premium skincare and wellness ecommerce brand, had been a long-time Retention.com customer, leveraging website visitor identification to power remarketing campaigns and automated email flows. However, in their pursuit of better data and stronger marketing ROI, Mirai Clinical ran a head-to-head data accuracy test between Retention.com and Customers.ai.
The outcome: Customers.ai delivered dramatically higher data accuracy and True Match Rate, providing high-performance fuel for conversions.
The Challenge
While Retention.com had helped Mirai Clinical capture revenue in the past, the marketing team wanted to ensure they were working with the most accurate and reliable data possible. Low-quality visitor predictions can waste marketing spend, inflate contact lists with low-intent leads, and ultimately hurt performance.
Mirai Clinical set out to answer two key questions:
- Which identity resolution provider offered the most accurate predictions?
- Which provider truly identified the highest percentage of verified customers?

The Experiment
Over the course of a week, Mirai Clinical conducted a controlled test between Customers.ai and Retention.com, using actual form fill data from 665 verified customers on MiraiClinical.com as the baseline.
The Results
Part 1: Data Accuracy
Mirai Clinical compared each provider’s “predicted identities” to the known, verified customer data to determine data accuracy.
Customers.ai produced 3.7x higher accuracy than Retention.com, with far more predictions.

Part 2: True Match Rate
Mirai Clinical then measured each provider’s True Match Rate — the percentage of verified customers that were correctly identified by each vendor.
Customers.ai’s True Match Rate was 55x higher than Retention.com, correctly identifying 41% of actual customers, compared to Retention’s 0.75%.



“We saw nearly 1.5x higher ROI in our first 2 weeks with Customers.ai vs Retention, and our CSM has been an incredible resource for marketing insights.”
Why Customers.ai Won
Reason 1.
Unparalleled Data Accuracy
Customers.ai delivered an 83% accuracy rate, compared to Retention.com’s 22%. This level of accuracy ensures that marketing teams are working with real identities that can be converted into customers, rather than bloating lists with irrelevant contacts.
Reason 2.
Higher True Match Rate
The True Match Rate—the gold standard for evaluating visitor ID performance—was overwhelmingly in Customers.ai’s favor. At 41%, Customers.ai connected Mirai Clinical with real, verified customers at scale.
Reason 3.
More High-Value Predictions
Customers.ai made 329 accurate predictions in just one week, compared to Retention’s 23. This meant more real opportunities for remarketing and revenue growth.
The Impact
By switching to Customers.ai, Mirai Clinical gained confidence in the accuracy and performance of their visitor data.

Increase flow volume
with real, verified visitors available for remarketing.

Reduce wasted marketing spend
on inaccurate data.

Boost marketing performance and ROI
by engaging more actual customers with targeted campaigns.

Takeaways
The results of Mirai Clinical’s test are clear: Not all visitor ID providers are created equal. Brands that rely on inaccurate predictions are leaving money on the table.
Customers.ai’s visitor ID technology delivers exceptional accuracy, a dramatically higher True Match Rate, and more high-value predictions — fueling more conversions, higher ROI, and greater marketing efficiency.
Want to test Customers.ai’s Visitor ID on your ecommerce store?