Klaviyo can send anything. It just can't tell you who to send it to, or when.
Every mid-market Shopify brand we talk to has the send infrastructure handled. What they don't have is the layer above it that decides which customers need which message, in what order, with what priority. That's the layer that turns retention from a calendar of campaigns into a queue of revenue at stake.
Catch the retention moves your ESP can't see.
Every customer in your Shopify store gets scored on three opportunities: about to churn, ready to reorder, or open to a cross-sell. The ones with the biggest revenue impact surface first.
About to churn
See them slipping before they're gone
A churn model trained on your orders, your ESP engagement, and your subscription signals. We don't tell you who already left. We tell you who's quietly drifting, while there's still time to bring them back.
Cross-sell ready
Know who they actually are
Demographic, household, and behavioral context layered onto every customer record. Your ESP can sort by 'first-time buyer.' We help you sort by who they are and what they'll buy next.
Ready to reorder
Catch them in the window
The replenishment moment is the easiest retention dollar in your store, and most flows miss it by 30+ days. We watch each customer's actual purchase cadence and surface them when the timing is theirs, not your calendar's.
Lookalike expansion
Find more people who'll love what you do
Score any cold list against your highest-LTV customers. Push the matches to Meta, Google, or TikTok. Skip the rest.
Show up
At the right time. With something that matters.
We hand the campaign to Klaviyo, Omnisend, Mailchimp, or Postscript with the right audience, the right timing, and full suppression. They handle delivery. You handle the brand.
From a one-time buyer to a lifelong super fan.
Loyalty isn't a single moment. It's a sequence of small ones, done well. RetentionLab is the engine that gets every one of them right.
One-time buyers
Feel noticed. Get a second message that fits, not a discount blast.
Repeat customers
Stay engaged. Show up in the right window with something they actually want.
Lifelong super fans
Trust the brand enough to come back without being asked. Tell other people about you.
Install RetentionLab on Shopify.
RetentionLab is available exclusively through the Shopify App Store. Connect your store, choose the plan that fits your contact count, and start in minutes. Your first ranked retention audience lands in Klaviyo by the end of the same day.
Pricing is based on contact count. Connect your Shopify store to get started.

Build a brand customers come back to.
The brands that win aren't the ones shouting the loudest. They're the ones customers trust enough to come back to. Connect your store and your ESP. Run your first churn analysis the same day. Start showing up better tomorrow.