In February 2025, Klaviyo announced significant pricing changes that have left many businesses re-evaluating their email marketing strategies.
The shift to billing based on active profiles means that even unengaged or inactive contacts can increase costs, leading to unexpected budget strains for many.
Needless to say, people are not happy.
For businesses relying on Klaviyo, this update isn’t just a small tweak…it’s a major shake-up. More contacts now mean more costs, whether they’re engaged or not.
At Customers.ai, we feel that growing your email list shouldn’t come with runaway expenses.
That’s exactly why we built the Customers.ai ESP – the first ESP designed specifically for Website Visitor Identification.
With the Customers.ai’s ESP, you can engage visitor ID contacts separately, qualify high-intent shoppers, and only push the best leads into Klaviyo or Mailchimp. The best part? You can still grow your list while keeping costs in check.
Exciting, right?! Let’s take a closer look.
The Customers.ai Advantage: The Only Website Visitor ID Product With A Natively Integrated ESP
Most ESPs were built in a world where email lists were static, engagement tracking was basic, and segmentation meant sorting by “new” vs. “returning” customers. That world is gone.
Today, your email list is constantly evolving. People visit your site, browse, engage, and drop off, all before ever filling out a form.
If your ESP wasn’t built to keep up with this, you’re either missing opportunities or paying way too much to send emails that never land.
That’s where the Customers.ai ESP for Website Visitor ID comes in.
Better Data = Better Deliverability
Bad email data is a one-way ticket to the spam folder. Sending to disengaged or low-quality contacts tanks your sender reputation and once you’re flagged, good luck getting back in the inbox.
That’s why we have a built-in filter that automatically screens out disengaged contacts before they ever damage your deliverability.
Unlike other visitor identification platforms, we don’t just dump every email into your ESP and hope for the best – we only send high-quality, verified contacts that are ready to engage.
Power Your Automations with Real-Time Segmentation
Most ESPs let you segment based on basic attributes like age, location, or purchase history. But if you’re still relying on old-school lists, you’re missing out big time.
With the Customers.ai ESP for Website Visitor ID, you can:
- Segment based on real visitor behavior
- Push contacts to your other ESP only when they engage, protecting your Klaviyo or Mailchimp account.
- Trigger automations in real time so you reach the right people at the right moment – before they bounce.
This isn’t just email marketing. This is email marketing built for the way people actually shop today.
Why You Need the Customers.ai ESP for Website Visitor ID Data
Not all ESPs are built the same. Some were made for traditional email lists. Some were made for newsletters.
The Customers.ai ESP was built for visitor ID contacts. We’re talking high-performance, data-driven marketing that turns anonymous visitors into customers – without blowing up your budget.
Here’s what makes our platform different:
1. Protect Your Deliverability
Your sender reputation is everything. Once you start landing in spam, it’s a steep climb back. Customers.ai ESP keeps your list clean and your emails landing in the inbox by keeping your visitor ID contacts in our platform until they are ready to go to Klaviyo.
2. ESP Interoperability
Already using Klaviyo or Mailchimp? Keep them!
Our ESP is designed to work alongside your existing provider, so you don’t have to choose between tools. You get the best of both.
3. Cut Klaviyo Costs
Here’s the problem: Website Visitor ID tools generate 10x more email contacts but they also 10x your Klaviyo bill. Not with us.
By keeping your visitor ID contacts in our ESP, you keep costs low, allowing you to scale your email marketing without draining your budget.
4. Engage Website ID Contacts Separately
Not every contact should be dumped into your primary ESP. With the Customers.ai ESP, you can keep your website visitor ID contacts separate and only push high-intent contacts to your other ESP once they’re ready to convert.
5. Superpower Your Segmentations
Forget broad audience lists. Use real-time consumer data to power hyper-targeted automations that reach the right people at the right time.
6. Build Beautiful Emails
Good segmentation is only half the battle. You also need emails that convert.
Our drag-and-drop builder makes it easy to create high-impact emails that engage and drive action.
7. Engage Website Visitors at Scale
Previously anonymous visitors don’t have to stay anonymous. Customers.ai ESP lets you reach, engage, and convert website traffic in ways no other ESP can.
This is how email should work in 2025 – smarter, more scalable, and built to drive results.
Key Features That Set Our ESP Apart
Most ESPs charge more as you grow. Customers.ai ESP is designed to let you scale your website visitor identification program without the steep price hikes.
But cost savings aren’t the only thing that makes it different.
It’s packed with automation, advanced deliverability tools, and AI-powered customization. Basically? More power, fewer limits, simple pricing.
Here are some of the core features that set us apart:
Built for Growth Without the Cost Creep
Klaviyo and Mailchimp pricing increases fast, especially when your contact list grows. Customers.ai ESP includes 10 email sends per contact at a fraction of the cost, making anonymous visitor identification actually affordable.
Unlimited Everything
Hitting limits on email automations and campaigns is a thing of the past. Customers.ai ESP gives you unlimited email automations, unlimited campaigns, and unlimited email aliases so you can run as many workflows and sequences as you need – without restrictions.
Email Deliverability That Works for You
A bad sender reputation means emails don’t land, and your entire strategy falls apart. Built-in email warmup and deliverability monitoring ensure you stay out of spam and get in front of your audience.
Automation and AI-Powered Personalization
The right message at the right time drives conversions, but manually creating every email is inefficient. With an automation builder and AI-driven email customization, Customers.ai ESP makes scaling personalized email campaigns simple.
Seamless CRM Integration
Connect your ESP to your CRM for better customer insights, cleaner data, and smoother workflows.
No more disjointed platforms or missing information. Everything works together.
Advanced Analytics and Reporting
Stop guessing what’s working and what’s not. Customers.ai ESP provides deep insights into your website visitor ID campaigns so you can optimize in real time and make data-backed decisions.
We feel confident in saying that the Customers.ai ESP isn’t just another email platform. It’s a smarter, cost-effective way to scale your email marketing with website visitor ID data.
The Future of Email Marketing Starts with Customers.ai
Email is evolving and the brands that win aren’t the ones just sending more emails. They’re the ones sending smarter emails – at the right time, to the right people, with precision.
That’s exactly what the Customers.ai ESP for website visitor ID data was built for.
More powerful segmentation, lower costs, and real-time engagement that turns website visitors into customers.
Whether you use it as a standalone ESP with your website visitor ID tool or alongside your existing provider, it’s designed to help you scale without limits, protect your deliverability, and maximize every contact.
If you’re ready to stop overpaying for outdated email strategies and start using the first ESP built for anonymous visitor identification, it’s time to see Customers.ai ESP in action.
See the Anonymous Visitors Hiding on Your Site
Book a demo of Customers.ai’s U.S. website visitor identification, customer journey insights and remarketing platform to skyrocket conversions and sales.
Important Next Steps
- See what targeted outbound marketing is all about. Capture and engage your first 500 website visitor leads with Customers.ai X-Ray website visitor identification for free.
- Talk and learn about sales outreach automation with other growth enthusiasts. Join Customers.ai Island, our Facebook group of 40K marketers and entrepreneurs who are ready to support you.
- Advance your marketing performance with Sales Outreach School, a free tutorial and training area for sales pros and marketers.