What Klaviyo flows are, and why they matter on Shopify
Klaviyo flows are automated sequences of email and SMS triggered by customer behavior in your Shopify store. Where a campaign is sent manually to a segment at a chosen time, a flow runs on its own the moment a condition is met. A customer signs up for the newsletter, abandons a cart or completes a purchase, and the right message goes out automatically at the right moment.
This behavioral targeting is exactly what makes Klaviyo flows for ecommerce so valuable. Because Klaviyo pulls order, product and browsing data directly from Shopify, your email flows in Klaviyo can be personalized down to product and customer level. At Mercive we consistently see a well built flow structure account for a disproportionately large share of email driven revenue, even though flows make up far fewer sends than campaigns.
The difference between campaigns and flows
One of the most common questions is the difference between Klaviyo campaigns and flows. Campaigns are one off sends you plan and send yourself, typically news, offers or launches to a segment. Flows are automated and always on, reacting to each customer's actions without you lifting a finger.
In practice the two work together. Campaigns create top of mind awareness and keep the list warm, while flows convert the individual customer at the right point in their journey. Our recommendation is clear: build the foundation of flows first, because they work for you around the clock, then layer campaigns on top.
The best Klaviyo flows for a Shopify store
When brands ask for a list of the best Klaviyo email flows, we prioritize by business value, not by what looks good in a template library. Start with these: a welcome flow for new subscribers, an abandoned cart flow, a browse abandonment flow for customers who look without adding to cart, a post purchase flow that follows up after the sale, and a win back flow for customers who have lapsed.
Beyond that, a checkout abandonment flow often delivers more than the classic cart flow because it catches customers who got further along. A thank you or review flow builds social proof, and a replenishment flow reminds customers to reorder consumables at the right time. For brands with subscriptions or loyalty programs, we build flows around renewal and retention.
The best Klaviyo flows are not a fixed template but a prioritized sequence adapted to your store. A brand with high repurchase frequency should weight replenishment and post purchase heavily, while a brand selling expensive one off purchases gets the most from a strong welcome and browse flow.
How to build a Klaviyo flow that works
A flow consists of three core elements: a trigger that starts it, filters that decide who goes through, and the message sequence itself with time delays in between. To create a Klaviyo flow you choose a trigger, for example Started Checkout or Placed Order, set the relevant flow filters and conditions, and then build the messages with appropriate wait times.
Most templates in Klaviyo are a good starting point, but few convert optimally out of the box. Our work lives in the details: timing that matches your product, segmentation so VIP customers and first time buyers do not get the same message, and A/B testing of subject lines and content. We also set up conditional splits so a flow branches by order value, product category or whether the customer has bought before.
A flow is never finished. We monitor open, click and conversion rates continuously and adjust sequence, content and timing based on data. That is the difference between a flow that runs and a flow that actually drives sales.
Is Klaviyo still the right choice
Klaviyo remains among the strongest platforms for email and SMS automation for Shopify brands, precisely because of the deep data integration. Access to real time order and behavioral data makes personalization more precise than most generic email tools can deliver.
At Mercive we build Klaviyo flows as part of a complete marketing automation strategy where flows, campaigns, segmentation and data work together. We start by mapping your customer journey, identify where revenue is leaking, and build the flows that close the biggest gaps first. That produces a measurable result faster than setting up ten flows at once.
How Mercive can help
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