How to Set Up Shopify Email Automation

Email is the highest-ROI owned channel most Shopify stores have. You own the list, the sends cost very little, and unlike paid ads the revenue compounds without paying for every click. The catch is that the real money comes from automation - flows that fire on their own when someone signs up, abandons a cart, or places an order - not from manually blasting your whole list. This guide walks through connecting an email tool to Shopify, the three flows to build first, the segmentation basics that make them work, and how to keep an eye on cost as your list grows. Pricing is hedged as of July 2026 and scales with usage, so confirm live rates before committing.

Pick and connect an email tool

Before you can automate anything, you need a tool connected to Shopify. Shopify's own Shopify Email handles the occasional broadcast, but it is thin on automation and segmentation - fine to start, quick to outgrow. For real flows you want a dedicated platform. We cover four worth shortlisting in our best email marketing software for Shopify guide: Omnisend, Klaviyo, Mailchimp, and Brevo.

Connecting is deliberately simple. Install the tool's app from the Shopify App Store, authorize it, and it syncs your customers, orders, and cart events automatically - no code required. Ecommerce-native tools like Omnisend and Klaviyo maintain a continuous, two-way sync, pulling live catalog data, order history, and browse and cart behavior so your flows can reference real products and real past purchases within minutes. That data sync is what powers everything that follows, so it is worth choosing a tool built for ecommerce rather than a generalist newsletter tool.

Once connected, add a signup form or popup to your storefront so new subscribers start flowing in. Most of these tools include built-in forms and popups, so you can capture emails without a separate app.

The three core flows to build first

Resist the urge to build ten flows on day one. Three of them do the heavy lifting, and every serious email tool ships prebuilt templates for exactly these - Klaviyo has 80+ flow templates, Omnisend has 27 prebuilt ecommerce workflows - so you are editing a starting point, not building from a blank canvas.

Welcome flow

This fires the moment someone subscribes. It introduces your brand, sets expectations, and usually delivers whatever incentive you promised at signup (a first-order discount is common). A welcome flow converts new interest into a first sale while attention is highest, so it is the flow with the shortest path to revenue. Start with two or three emails spaced over the first few days.

Abandoned cart flow

Most people who add to cart never check out. This flow reminds them, and it is consistently among the highest-earning automations a store runs because it targets people who already showed real buying intent. One to three reminder emails over a day or two, ideally showing the exact items left behind, is the standard shape. Ecommerce tools pull the product images and details in automatically from the Shopify sync.

Post-purchase flow

The order is placed - now turn a first-time buyer into a repeat one. A post-purchase flow can thank the customer, set delivery expectations, ask for a review, and later suggest a replenishment or complementary product. It costs almost nothing and quietly lifts lifetime value, which is why it belongs in the first three even though it feels less urgent than cart recovery.

Get these three running and measured before you add browse-abandonment, win-back, or cross-sell flows. Those are real earners too, but they are step-two.

Segmentation basics

Segmentation means sending the right message to the right slice of your list instead of the same email to everyone. You do not need anything elaborate to start. A few segments cover most of the value:

• Engaged vs. unengaged - people who have opened or clicked recently vs. those who have gone quiet. Mailing your engaged segment protects deliverability.
• Buyers vs. non-buyers - customers who have ordered vs. subscribers who never have. The messaging should differ.
• New vs. repeat customers - a first-time buyer and a loyal repeat buyer want different things.

The behavioral data from your Shopify sync makes these segments update themselves - someone moves from non-buyer to buyer the moment they order. Tools vary in depth here: Klaviyo offers the deepest ecommerce segmentation (RFM, predicted lifetime value, churn risk), while Omnisend and Brevo cover the essentials with a gentler learning curve. Start simple; add sophistication only when a simple segment stops being specific enough.

Testing and measuring

Automation is not set-and-forget. Once your flows are live, watch three numbers per email:

• Open rate - are subject lines earning attention?
• Click rate - is the content compelling enough to act on?
• Revenue per email (or per recipient) - the one that matters most, and the reason ecommerce tools attribute revenue back to specific flows and campaigns tied to real Shopify orders.

Run A/B tests on subject lines and send timing, and let revenue per email - not opens alone - decide the winner. Klaviyo's per-flow, per-campaign attribution is best-in-class here, but every tool in our shortlist reports revenue at some level. Check your flows monthly, prune emails that underperform, and only expand once the core three are pulling their weight.

Cost as your list grows

Every tool here has a free plan (roughly 250 contacts each), so you can build and test the core three flows at zero cost. The bill arrives as your list grows, and it grows differently depending on how the tool prices.

• Klaviyo bills on all active profiles - starting around $20/month and climbing to roughly $100/month at 5,000 profiles (as of July 2026). Note it counts contacts you could mail, not just those you send to.
• Omnisend prices on contacts too, starting around $16-$20/month and reaching about $70/month at 5,000 contacts (as of July 2026).
• Mailchimp starts around $13/month (Essentials) or $20/month (Standard) for 500 contacts, scaling with count - and watch the billing gotcha where unsubscribed contacts keep counting unless archived (as of July 2026).
• Brevo is the outlier: it prices on send volume, not contacts, with paid plans from around $9/month for roughly 5,000 emails (as of July 2026) - uniquely cheap for a large list you email infrequently.

Because prices climb steeply at the top tiers, estimate your bill at your expected contact count before you commit. Our email marketing cost calculator models the monthly cost across tools at your list size so there are no surprises.

Which email tool fits you

For most growing Shopify stores, Omnisend is the sensible default - ecommerce-native, email plus SMS plus push in one bill, and priced well for the 500 to 10,000 contact range. As email becomes a core revenue channel and you need surgical segmentation and per-flow attribution, Klaviyo is the step up (see how they stack up head to head in our Klaviyo vs. Omnisend comparison). If you are brand new and want the gentlest editor, Mailchimp is the easiest on-ramp, and if you run a large list with light send frequency, Brevo is the value play. Whichever you pick, the playbook is the same: connect it, build the core three flows, segment simply, measure revenue per email, and let cost guide when you upgrade. Compare all four in our email marketing category.