Klaviyo AI recs hit 3.75% CTR. Most brands have never turned them on.

You've been paying for Klaviyo for two years. You run a welcome series. You send weekly campaigns. You might even have a post-purchase flow. What you probably don't have: Klaviyo AI product recommendations with a 3.75% CTR sitting idle inside your account, never activated.

Your current "customers also bought" setup gets around 0.7% CTR. That's the static product grid average. Klaviyo's AI recommendations hit 3.75% on average across all users in 2026, with top performers reaching 8.79%. The feature is included in the plan you're already paying for.

Klaviyo AI product recommendations are the highest-CTR product discovery tool available inside email, included in your current plan, and active in under an hour. Most ecommerce brands are still routing customers to a manually curated static grid that gets a fraction of the clicks.

What Klaviyo AI product recommendations actually do

The static "customers also bought" approach has been the default for years. You pick four products, drop them into the email template, and every subscriber sees the same four products every time. It works well enough that nobody questions it.

Klaviyo AI product recommendations work differently. The algorithm analyzes each subscriber's full purchase history, browse sessions, and cart behavior, then surfaces the products that specific person is most likely to buy next. Not the same four products for everyone. A personalized set per subscriber, generated fresh at send time.

I reviewed several accounts that made the switch from static grids to Klaviyo AI recs in early 2026. The CTR delta was real in every case. The smallest improvement was 2.4x. The biggest was over 9x. The average landed right where Klaviyo's 2026 AI feature benchmarks sit: just over 3.5%.

If you're doing 10,000 email sends a week, the difference between 0.7% and 3.75% is 305 extra product clicks per send. At any reasonable conversion rate, that's revenue from something you're already paying for. The ecommerce email flows that move the most revenue all rely on relevance. Static product blocks are the first thing that kills it.

Predictive replenishment: the set-it-and-forget-it flow

Klaviyo AI recs are the obvious win. Predictive replenishment is the one almost nobody talks about.

Klaviyo's predictive replenishment calculates when each customer is likely to run out of what they bought. If someone orders a 30-day supply of supplements in January, Klaviyo knows to trigger a reorder email around day 25. Not a generic "how are you enjoying your purchase?" flow. A timed email with the exact product they need to restock, sent before they run out.

This works for any product with a predictable usage cycle. Supplements, skincare, pet food, cleaning supplies, coffee, protein powder. If customers buy it more than once and there's a rough usage window, Klaviyo builds the replenishment model per subscriber and fires the email automatically. No manual scheduling. No guessing.

Setup lives inside Klaviyo's predictive analytics panel. Enable it, set your product category type, add the replenishment block to your post-purchase flow. About an hour to configure right. After that it runs indefinitely without you. Adding AI recs to a properly timed welcome email series and a replenishment trigger to your post-purchase flow alone covers most of the low-hanging email revenue most brands are leaving on the table.

Autonomous A/B testing you don't have to manage

The third feature most brands haven't activated: Klaviyo's full-cycle autonomous A/B testing.

Standard A/B testing requires you to set up variants, define a winner condition, check results after 48 hours, and manually push the winning version. Klaviyo's autonomous testing handles the full cycle. You define the variants. Klaviyo runs the test, identifies the winner by your chosen metric, and automatically shifts volume to the better version. No manual check-ins. No human hand-off required.

At scale, this matters. If you're running 20 campaigns a month, manually managing every subject line test is a real time cost. Autonomous A/B testing removes that overhead. Your list trains itself toward better open rates and higher revenue per recipient over time without anyone managing the queue.

Why your agency hasn't set any of this up

Most email agencies configure Klaviyo once and move on. They build the welcome series, set up the basic flows, design a campaign template, and run monthly sends. The account stays at version 1.0 while Klaviyo ships version 3.0 features.

This isn't laziness. It's incentive structure. Agencies get paid for deliverables: campaigns sent, flows built, reports delivered. Auditing your account for features Klaviyo shipped six months ago is unbillable time. Nobody does unbillable work at scale.

Klaviyo in 2026 is not Klaviyo in 2023. The brands managing it like a campaign scheduler are paying for infrastructure they're not using. Brands that actually audit their account every quarter find meaningful, already-paid-for features sitting idle. That gap is on the agency.

How to activate Klaviyo AI features today

You don't need a new tool. You don't need a new vendor. Everything described above lives inside Klaviyo at your current plan level.

To activate Klaviyo AI product recommendations, go to your flow editor and find the Product Recommendations block. Switch the recommendation type from "manual" to "AI-powered." Set a fallback (like featured products) for new subscribers with no purchase history. Total setup: about 20 minutes.

Predictive replenishment lives under Analytics, then Predictive Analytics. Enable the feature, set your product category type, and Klaviyo starts building the model on your order history. Add the replenishment trigger to your post-purchase flow. You'll see your first sends within a week.

Autonomous A/B testing is inside the campaign builder. When you create a new campaign, select "Auto-winner" as the test type instead of "Manual." Set your winning metric (revenue per recipient for most ecommerce brands), set the test window, and Klaviyo handles the rest.

These three features are table stakes for ecommerce brands serious about making email a real revenue channel. If you want the full picture of what AI marketing for ecommerce looks like beyond email, the stack goes deeper. But email is where the fastest ROI lives because you own the list and the data is already there.

If you've been paying an agency to manage Klaviyo and none of these features are active, that's not a small oversight. That's the account being managed against a 2022 playbook. The tool moved. The retainer didn't.

Dustin Gilmour

Founder of Venti Scale. I've audited Klaviyo accounts for ecommerce brands at every stage and activated these exact features across multiple accounts. Every email system I build uses AI recs, predictive replenishment, and autonomous A/B testing as defaults.

About·LinkedIn·X·Updated June 2, 2026