Cross-Sell Flow Guide
Cross-sell emails generate 15-25% more revenue per customer. The product they should buy next is sitting in your data. Klaviyo knows what it is.
After a customer buys, what do most brands send? An order confirmation. A shipping notification. Then nothing relevant until the next campaign blast. Meanwhile, Klaviyo knows exactly which products that customer's purchase history and browse data suggest they should buy next.
Cross-sell flows use this data automatically. Someone buys shampoo — they get a conditioner recommendation. Someone buys a jacket — they get matching accessories. The recommendation is based on what customers like them actually bought next, not a random product push.
This guide covers the Klaviyo cross-sell flow setup from data analysis through optimisation.
15-25%
AOV Increase
150+
Brands Managed
Gold
Klaviyo Partner
$23M+
Revenue Driven
How to fix this — step by step
Analyse purchase pair data
Pull your Shopify order data. Which products are most frequently bought together? Which product do customers buy second? This data drives your cross-sell recommendations — not guessing, not randomisation.
Build product-specific cross-sell flows
In Klaviyo, create flows triggered by specific product purchases. Bought Product A → wait 10-14 days → recommend Product B (the most common second purchase). Dynamic product blocks pull recommendations from your data.
Time the cross-sell correctly
10-14 days after purchase for most products. Long enough that they have received and used the product. Short enough that purchase momentum is still active. Consumables may be shorter. Durables may be longer.
Use social proof in cross-sell emails
"Customers who bought [their product] also loved [recommended product]." Include reviews and ratings for the recommended product. Social proof reduces the friction of buying a product they have not researched.
A/B test and optimise
Test timing (7 days vs. 14 days vs. 21 days). Test recommendations (data-driven vs. curated). Test format (single product vs. multiple options). Track revenue per recipient and optimise monthly.
Want us to handle this?
Cross-sell flows are among the highest-ROI automations in Klaviyo because they target customers who already trust your brand with a relevant recommendation at the right time.
As a Klaviyo Gold Partner, we build cross-sell flows based on your actual purchase data.
Questions our best clients asked first
Turn one purchase into many
Free flow audit. We will analyse your purchase data, identify the strongest cross-sell opportunities, and show you what automated cross-selling should generate.
Pick a Time15 minutes. No pitch deck. Just your data and our honest take.
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