Klaviyo is the industry-standard email and SMS marketing platform for Shopify stores that have outgrown Shopify Email. Its deep integration with Shopify’s event data — browse history, purchase frequency, product affinity — enables segmentation and automation that generic email tools simply cannot match. This guide covers how to set it up and the flows that generate the most revenue.
Why Klaviyo Over Shopify Email
Shopify Email handles basic campaigns adequately, but it lacks behavioural triggers, advanced segmentation, predictive analytics, and A/B testing at the flow level. Klaviyo syncs every Shopify event — product viewed, collection browsed, checkout started, purchase made, refund issued — and makes all of it available for segmentation and trigger logic in real time.
For stores generating over £5,000/month in revenue, Klaviyo typically delivers email-attributed revenue of 20–35% of total store revenue when flows and campaigns are properly configured.
Installation and Sync
Install the Klaviyo app from the Shopify App Store and connect it to your Klaviyo account. The initial sync imports your entire customer history — orders, product data, and existing subscribers. For stores with large catalogues, the sync may take several hours. Once complete, Shopify events flow into Klaviyo in real time via webhooks.
Enable the Klaviyo web tracking snippet (or use the Shopify integration’s auto-injection) to capture browse abandonment events. Without this, you cannot trigger browse abandonment flows.
Essential Automation Flows
| Flow | Trigger | Emails | Recommended Timing | Typical Revenue Contribution |
|---|---|---|---|---|
| Welcome series | List subscribe | 3–4 | 0h, 24h, 72h, 7d | High (first purchase driver) |
| Abandoned cart | Checkout started, no purchase | 2–3 | 1h, 4h, 24h | Very High |
| Browse abandonment | Product viewed, no purchase | 1–2 | 4h, 24h | Medium |
| Post-purchase | Order placed | 2–3 | 2d (thank you), 7d (education), 21d (review request) | Medium (LTV driver) |
| Win-back | No purchase in 90–180d | 2–3 | 90d, 105d, 120d | Low-medium (lapsed reactivation) |
Segmentation Strategy
Klaviyo’s predictive analytics generate segments automatically: Active on Site, Likely to Purchase Next 90 Days, High Customer Lifetime Value, and Churned. Start by sending campaigns to your most engaged segment (opened email in last 30 days) to protect deliverability before expanding to broader lists.
Segment by product category purchased to send relevant post-purchase education and cross-sell recommendations. A customer who bought a coffee machine should receive emails about coffee subscriptions and accessories — not unrelated products from your catalogue.
SMS Availability by Country
Klaviyo SMS is available in the United States, Canada, United Kingdom, and Australia as of 2026. For Indian, UAE, and other markets, SMS must be handled via local providers (MSG91, Twilio, Interakt). Klaviyo supports SMS list growth via sign-up forms and has separate compliance requirements per country — double opt-in is mandatory in the UK under PECR.
FAQ
Does Klaviyo slow down Shopify store speed?
The Klaviyo tracking snippet adds a small amount of JavaScript to every page. When loaded asynchronously (the default), its impact on Core Web Vitals is minimal. Avoid loading Klaviyo synchronously or blocking render — check your theme’s implementation if you see a measurable LCP regression after installation.
How do I stop Klaviyo emails going to spam?
Set up a dedicated sending domain (branded subdomain) rather than using Klaviyo’s shared domain. Configure SPF, DKIM, and DMARC records for your sending subdomain. Warm up new domains gradually — start with your most engaged subscribers, increase volume over four to six weeks. Maintain list hygiene by suppressing unengaged contacts regularly.
Can I use Klaviyo with a Shopify store on the Basic plan?
Yes. Klaviyo works on any Shopify plan. The Klaviyo free tier supports up to 250 contacts and 500 email sends per month — sufficient for early testing. Paid Klaviyo plans are based on contact count, not Shopify plan tier.
Ready to Grow Your Shopify Store?
Our Shopify experts at OneOnic have helped hundreds of brands launch, optimise, and scale. Let’s talk about your project.
