Why You Should Always Exclude Recent Buyers From Your Klaviyo Campaigns

Why You Must Exclude Buyers From Your Klaviyo Campaigns

Picture this: a customer buys a jacket from your store on Monday. Full price, no discount.

On Tuesday, they get an email from you offering 20% off the exact jacket they just bought.

What do they feel? Not grateful. They feel cheated. They just paid $40 more than they had to, and you are rubbing it in.

That is what happens when you forget to exclude buyers from your Klaviyo campaigns. And it is one of the most common mistakes we see across 2,000+ dropshipping stores.

What Actually Happens When You Send to Recent Buyers

The damage shows up in your Klaviyo analytics quickly.

• Unsubscribe rates spike: buyers who feel targeted unfairly opt out immediately. Every unsubscribe shrinks your future audience.
• Spam complaints increase: customers who are frustrated enough report your email as spam instead of unsubscribing. This directly damages your sender reputation.
• Trust is broken: the customer may not complain. They just quietly stop engaging with your brand. Future emails go unopened.
• Deliverability drops: enough spam complaints and low engagement signals push your emails into the spam folder for everyone, not just the buyers you annoyed.

None of this is visible immediately. That is why most stores keep making this mistake. The damage accumulates silently until open rates drop and revenue falls.

The 3 Types of Buyers to Always Exclude

Not all buyers are the same. Here are the three categories you must segment and exclude separately.

1. Recent Buyers (Last 7 to 15 Days)

Anyone who purchased from you in the last 7 to 15 days should be excluded from your promotional campaigns.

The exact window depends on your promotion length. If you are running a 3-day flash sale, exclude buyers from the last 7 days. If you are running a 7-day Black Friday campaign, exclude buyers from the last 15 days.

The rule: your exclusion window should cover the full length of the promotion plus a buffer.

This protects customers who bought right before the sale from seeing a better deal they missed out on.

2. Refunded Customers

A customer who got a refund from you is already unhappy. Sending them promotional emails is adding insult to injury.

Exclude refunded customers from all campaigns permanently. Not just from active promotions. From everything.

This is a small segment but a high-risk one. Refunded customers are far more likely to mark your emails as spam than a regular subscriber. Remove them from your marketing list entirely.

3. Product-Specific Buyers

This one requires more segmentation effort, but it pays off.

If a customer just bought jeans from your store, they are unlikely to want a jeans promotion this week. They already have what they came for.

Create product category exclusions in Klaviyo. When you send a campaign for a specific product category, exclude anyone who purchased from that category in the last 30 days.

This makes your campaigns more relevant, reduces unsubscribes, and improves click rates because the people who receive the campaign are the ones most likely to want what you are promoting.

How to Exclude Buyers From Klaviyo Campaigns Properly

The good news: Klaviyo makes exclusion lists easy to set up. Here is the process.

Step 1: Create Your Exclusion Segments

In Klaviyo, go to Segments and create the following:

• Recent buyers 7 days: anyone who placed an order in the last 7 days
• Recent buyers 15 days: anyone who placed an order in the last 15 days
• Refunded customers: anyone who has an order with a “refunded” status
• Category buyers 30 days: anyone who purchased from a specific product category in the last 30 days (create one per major category)

Step 2: Add Exclusions Every Time You Create a Campaign

When you build a campaign in Klaviyo, there is an “Excluded Segments” field in the campaign builder.

Before you schedule any promotional campaign, add your exclusion segments to this field. Make it a habit. Make it part of your campaign checklist.

If you are running a Black Friday campaign, add both the 7-day and 15-day recent buyers segments to exclusions. Add refunded customers. Add any relevant product category buyers.

Step 3: Apply the Same Logic to Flows

Exclusions do not only apply to campaigns. They apply to flows too.

If you have a promotional email inside a browse abandonment flow or a win-back flow, you should also exclude recent buyers from those flows.

The principle is the same: someone who just bought does not need to be retargeted. They are already a customer. Focus on them with the post-purchase flow, not with promotional retargeting.

What Proper Exclusions Do for Your Klaviyo Performance

This is not just about avoiding mistakes. Proper exclusions actively improve your numbers.

• Higher open rates: a more relevant audience means more people engage with your emails
• Lower unsubscribe rates: people who want what you are promoting stay subscribed longer
• Better deliverability: Gmail and Outlook see stronger engagement signals, improving your sender score
• Higher revenue per send: a smaller, more targeted send typically outperforms a large, untargeted one

This is one of the few Klaviyo settings that improves everything at once. More relevance, better deliverability, lower churn.

The Bottom Line on Excluding Buyers From Klaviyo Campaigns

Exclusion lists are not a nice-to-have. They are a fundamental part of every campaign you send.

There is a real person behind every email address on your list. That person just gave you money. Treat them like it.

Exclude buyers from the last 7 to 15 days. Exclude refunded customers permanently. Exclude product-specific buyers from relevant promotions.

Do this consistently, and your Klaviyo campaigns will be more profitable, more relevant, and far less likely to damage the trust you spent money building.