
How Modern Blaze Drove Unrivaled Revenue with Customers.ai in Head-to-Head Visitor ID Competitor Test
Modern Blaze, a premier home goods brand specializing in fireplaces and home heating solutions through Shopify, evaluated the data quality of website visitor identification providers. By running a controlled test between Customers.ai and Opensend, Modern Blaze measured the impact of each vendor’s identified contacts on key email marketing performance metrics.
The results were decisive: Customers.ai dramatically outperformed Opensend, delivering higher open rates and actual revenue — while Opensend’s identified contacts generated higher spam rates and zero purchases.
The Challenge
Like many Shopify stores, Modern Blaze sought to maximize the value of its website traffic by identifying and converting anonymous visitors. However, not all visitor identification solutions deliver the same level of accuracy, engagement and return on investment.
To determine the best provider, Modern Blaze compared the quality of new visitor predictions, email engagement rates, and, ultimately, sales conversion rates.

The Test
To ensure a fair comparison, Modern Blaze implemented both Customers.ai and Opensend simultaneously on ModernBlaze.com. Each provider’s identified visitors were funneled into the same automated welcome email series, allowing for an apples-to-apples performance comparison.
The key performance metrics measured included:
- Email open rates indicating engagement levels
- Click-through rates indicating interest in offers
- Spam complaint rates indicating risk to deliverability
- Total orders and order value indicating revenue impact
The Results
The test results revealed a massive gap in performance between Customers.ai and Opensend:

While Opensend produced more visitor predictions, those contacts were more likely to report messages as spam and ultimately generated no conversions or sales. Customers.ai’s superior visitor identification accuracy truly reached engaged shoppers on the site, generating infinitely more revenue and return on investment for Modern Blaze.


Why Customers.ai Won
Reason 1.
Higher Engagement and List Quality
Customers.ai delivered more engaged visitors, leading to 2.5x higher click rate compared to Opensend.
Reason 2.
Lower Unsubscribe and Spam Rates
The data quality gap was evident in the unsubscribe and spam complaint rates. Opensend’s contacts had a 1.6x higher unsubscribe rate and 1.5x higher spam complaints, as a result of Customers.ai delivering more relevant, high-intent contacts.
Reason 3.
Significant Revenue Generation
The most critical difference? Customers.ai’s identified visitors converted into real revenue. While Opensend’s contacts resulted in 0 purchases and $0 revenue, Customers.ai’s contacts placed 7 orders totaling $10,343.99 in revenue.
The Impact
By using Customers.ai, Modern Blaze was able to:

Increase email engagement
leading to more clicks and site visits.

Decrease spam & deliverability risk
by remarketing to true shopper identities.

Avoid wasted budget
on low-quality, non-converting contacts.

Takeaways
This test demonstrates that accurate visitor identification is the key to effective email retargeting. While Opensend generated more total visitor predictions, their data failed to convert into real revenue.
Customers.ai ensures that brands like Modern Blaze can remarket to and convert high-value visitors and drive real sales.
Want to test Customers.ai’s Visitor ID on your ecommerce store?