How to Segment Your Email List in Klaviyo for Higher Revenue

Stop sending the same email to everyone. Here's how smart segmentation turns your Klaviyo list into a revenue machine.

If you're sending the same email to your entire Klaviyo list, you're leaving money on the table and probably annoying your customers at the same time.

Segmentation is one of the most powerful and most underused features in Klaviyo. When done right, it means the right customer gets the right message at the right time. That translates directly into higher open rates, more clicks, and more revenue.

In this guide, we'll walk you through exactly how to segment your Klaviyo list for maximum revenue from the basics to the advanced strategies we use with our Shopify clients at Retention Lab.

📊 Key stat: Segmented email campaigns generate up to 760% more revenue than non-segmented ones. At Retention Lab, our segmented Klaviyo campaigns consistently deliver 32–35% open rates and conversion rates of up to 7.27%.

What is email segmentation in Klaviyo?

Segmentation is the practice of dividing your email list into smaller, targeted groups based on specific criteria things like purchase history, browsing behaviour, location, or how recently someone last bought from you.

Klaviyo makes this especially powerful because it pulls data directly from your Shopify store. Every purchase, page view, and abandoned cart is captured and available to build segments with. You're not guessing, you're using real customer behaviour to inform every send.

Why segmentation directly impacts revenue?

Think about it from your customer's perspective. Would you rather receive an email that says "Hi, here are all our products" — or one that says "Hi Sarah, you bought the vitamin C serum last month — here's what pairs perfectly with it"?

Relevance drives revenue. Here's what good segmentation does:

• Increases open rates: people open emails that feel personal

• Reduces unsubscribes: fewer irrelevant emails means fewer opt-outs

• Boosts conversions: targeted offers match customer intent

• Improves deliverability: higher engagement keeps you out of spam

• Grows customer lifetime value (LTV): repeat buyers spend more over time

  
  

The 6 Klaviyo segments every shopify store should build

These are the core segments we build for every Retention Lab client. Start here.

1. Active Subscribers (Engaged 90 Days)

Who they are: People who have opened or clicked at least one of your emails in the last 90 days.

Why it matters: This is your warmest, most valuable audience. These people want to hear from you. Sending to this segment protects your sender reputation and maximises engagement.

How to build it in Klaviyo: Go to Lists & Segments → Create Segment → add condition "Has opened email at least once in the last 90 days" OR "Has clicked email at least once in the last 90 days".

2. First-Time Buyers

Who they are: Customers who have placed exactly one order with you.

Why it matters: Converting a one-time buyer into a repeat customer is the single biggest lever for growing LTV. This is the segment you nurture hardest — with post-purchase flows, product education, and targeted offers.

How to build it in Klaviyo: Condition: "Has placed order exactly 1 time" AND "Placed order at least once over all time". Combine with your Shopify integration for real-time accuracy.

3. Repeat Buyers (VIP Customers)

Who they are: Customers who have placed 2 or more orders, or who have spent above a certain threshold (e.g. £200+).

Why it matters: Your VIP customers drive disproportionate revenue. They deserve priority access, early launches, and exclusive offers. Treating them differently strengthens loyalty and encourages even more spend.

How to build it in Klaviyo: Condition: "Has placed order at least 2 times" OR "Total lifetime spend is greater than £200". Adjust the threshold based on your average order value.

4. At-Risk / Lapsing Customers

Who they are: Customers who have purchased before but haven't bought in 60–120 days (adjust to your typical repurchase cycle).

Why it matters: It's far cheaper to win back an existing customer than to acquire a new one. Catching customers before they go fully cold gives you the best chance of re-engaging them.

How to build it in Klaviyo: Condition: "Has placed order at least once" AND "Last order date is more than 60 days ago" AND "Last order date is less than 120 days ago".

5. Browse Abandoners (Non-Purchasers)

Who they are: People who have viewed product pages in the last 30 days but have never purchased.

Why it matters: These people have already shown interest in your products — they just haven't converted yet. A well-timed email with social proof or a gentle incentive can nudge them over the line.

How to build it in Klaviyo: Condition: "Has viewed product at least once in the last 30 days" AND "Has placed order 0 times over all time". Requires Klaviyo's on-site tracking snippet to be installed on your Shopify store.

6. Unengaged Subscribers (Sunset Candidates)

Who they are: Subscribers who haven't opened or clicked any email in the last 180 days and have never purchased.

Why it matters: Sending to disengaged subscribers hurts your deliverability. You need to either re-engage them or remove them from your active list. A sunset flow is your last attempt before suppression.

How to build it in Klaviyo: Condition: "Has not opened email in the last 180 days" AND "Has not clicked email in the last 180 days" AND "Has placed order 0 times".

Advanced Segmentation Strategies

Once the core six are in place, these approaches can take your revenue even further:

Segment by product category purchased: If you sell skincare and supplements, don't cross-sell randomly. Segment by what someone has actually bought and recommend complementary products.

Segment by average order value (AOV) : High-AOV customers respond differently to offers. They may not need a discount — try early access, bundles, or premium product highlights instead.

Segment by predicted next purchase date: Klaviyo's predictive analytics feature estimates when a customer is likely to buy next. Use this to send a timely nudge before they're even thinking about it.

Segment by location or timezone: For brands with an international audience, sending at the right local time can meaningfully lift open rates.

Segment by quiz or preference data: If you use a Shopify quiz (e.g. for skincare type or dietary preference), feed that data into Klaviyo via custom properties to build hyper-personalised segments.

Common Segmentation Mistakes to Avoid

• Segmenting too narrowly too soon — start with the core six before going hyper-granular. Tiny segments are hard to draw conclusions from.

• Never cleaning your list — regularly suppress unengaged contacts to protect deliverability and keep your metrics meaningful.

• Treating segmentation as a one-off — your customer base evolves. Revisit and update your segments monthly.

• Ignoring suppressed profiles — customers who unsubscribed from email can often still be reached via SMS. Don't write them off entirely.

• Not excluding segments from campaigns — when running a re-engagement campaign, make sure your already-active customers aren't receiving it too.

  
  

Real Results from Smart Segmentation

At Retention Lab, segmentation is at the core of everything we build for our Shopify clients. Here's what it looks like in practice:

• A skincare brand we work with saw a 25% increase in email revenue within 3 months of implementing proper Klaviyo segmentation and flows.

• A furniture eCommerce client went from minimal email engagement to 255 orders driven through targeted automations alone — an increase of over 6,300%.

• Across our client base, segmented campaigns consistently achieve a 46% average open rate, well above the industry benchmark of 20–25%.

  
  

These aren't flukes. They're the result of treating every customer as an individual, not a number on a list.

How to Get Started Today

You don't need to build 20 segments overnight. Here's a simple action plan:

1. Week 1: Set up your Active Subscribers and First-Time Buyers segments

2. Week 2: Build your VIP and At-Risk segments

3. Week 3: Create your Browse Abandoners and Unengaged segments

4. Week 4: Review performance and start tailoring campaign content per segment

5. Month 2+: Layer in advanced segments based on what the data tells you

Final Thoughts

Klaviyo gives you everything you need to segment your list and send emails that actually resonate. The brands that win at email marketing aren't necessarily the ones with the biggest lists — they're the ones who understand their customers well enough to speak to them individually.

Start with the six core segments. Get comfortable with the data. Then layer in complexity as your understanding of your customers grows.

If you want to skip the trial and error, Retention Lab helps Shopify brands build the exact segmentation systems that drive real, measurable revenue growth — without the agency overhead.