Setting up llea.ai on Shopify (and connecting it to your stack)

Setup is meant to be boring. The fastest signal that a Shopify app respects your time is how little of it the install takes. This post walks through what installing llea.ai actually looks like, the platforms we connect to out of the box, and the edge cases (custom checkouts, headless, multi-store) that come up most often.

The 5-minute install

You add the app from the Shopify App Store the same way you'd add any other app. Shopify asks you to approve the OAuth scopes we need: read access to customers, orders, products, and a web pixel for behavioural events. That's it. No theme edits. No code snippets. No developer required.

The pixel registers automatically; you don't paste anything into theme.liquid. If you're on a custom theme or a headless storefront, see the section further down.

What happens in the first 24 hours

The moment you approve OAuth, we backfill the last 90 days of orders and customers from your store. That history is what trains your per-store model. The weights are unique to your catalog and your shoppers, not borrowed from another merchant.

You won't see useful intent on visitors who arrived before the install. We can't backfill what wasn't tracked. From the moment the pixel is live, every session is scored.

Will it slow down my store?

The pixel is loaded asynchronously and is roughly 14 KB gzipped. It does not block render, does not run on the critical path, and does not call any sub-resource on first load. We've benchmarked it on Shopify themes including Dawn, Impulse, Prestige, and a handful of custom themes. Measurable Largest Contentful Paint impact has been under 50 ms in every case we've tested.

Theme compatibility

llea.ai works on any theme set as the active Online Store theme. Web Pixel support is tied to the Online Store runtime, not to a theme's age, codebase, or last-updated date. That means Dawn, every theme in the Shopify Theme Store, and older or vintage themes (including pre Online Store 2.0 bases) all deliver pixel events the same way once they're live on the storefront.

The platforms we integrate with

llea.ai is built to make your existing stack sharper, not to replace it. The most common integrations:

• Shopify Flow is the spine. Every intent-threshold crossing in llea.ai fires a Flow event. Flow then routes it to whichever CEP you have configured, either through that CEP's native Shopify Flow connector or via an HTTP webhook.
• CEP platforms (like Klaviyo, Mailchimp, ActiveCampaign, Omnisend, and Brevo): native Shopify Flow connectors. Your existing campaigns and templates fire on the llea.ai trigger.
• WhatsApp tools (Wati, AiSensy, Interakt, Gallabox): triggered via Shopify Flow or webhook, depending on which connector your provider exposes.
• Postscript, Attentive (SMS): same hand-off pattern through Shopify Flow.
• MoEngage, CleverTap, WebEngage: HTTP-webhook hand-off today; native connectors on the roadmap.
• Meta and Google ads: weekly lookalike-seed exports of your top-intent cohort for retargeting and prospecting.

Custom checkouts, headless, multi-store

• Custom checkout (Shopify Plus checkout.liquid): works as-is. The pixel captures checkout events through the standard Web Pixel API regardless of customisations on top.
• Headless (Hydrogen, Next.js, custom React storefronts): supported. Shopify's Web Pixel app extensions do not auto-run on headless front ends, so tracking is wired the same way you wire any other analytics tag: through Google Tag Manager, Segment, or directly in your storefront code. Fire the standard events (page view, product view, add to cart, begin checkout, purchase) to llea.ai's endpoint. We'll send you the GTM container template and the event spec, with Hydrogen and Next.js examples.
• Multi-store merchants: install once per store. Each store gets its own model and its own dashboard, plus a roll-up view if you have 3+ stores.

Where llea.ai sits in your existing stack

We don't replace your CEP platform, Shopify Flow, GA4, or your CRM. We add a layer on top that tells those tools who to act on and when, at the level of individual shoppers rather than broad cohorts.

The result is fewer messages going out, and the ones that do go out land on the shoppers most likely to convert. Your CRM, your reporting, your CEP infrastructure stay where they are. llea.ai becomes the routing brain in the middle, shifting your outreach from cohort-and-campaign thinking to per-shopper intent.

Your first four weeks with llea.ai

From the moment you sign up, here's exactly what happens next: what llea.ai's implementations team handles, and what we'll need from you along the way. The whole plan runs on the stack you already have. It reads the data your store already captures (orders, browsing, engagement) and builds a live profile for every customer: what they'll buy next, when, and the channel most likely to convert them. There's no migration and no rebuilding.

Week 1 · Setup: get llea connected

The foundation week. llea.ai needs a live read on your store and marketing platform before anything can be built. Two things happen, both on your side:

1. Install llea.ai on your Shopify store. Add the app from the Shopify App Store. This is what lets llea start reading your order, browsing, and engagement data to build live customer profiles. No developer needed.
2. Share access with the implementations team. Add llea as a collaborator on your Shopify store, and invite us into your CEP/ESP platform (Klaviyo, MoEngage, CleverTap, or whichever you run) with a scoped role limited to what onboarding actually needs: flows, data platform, and API keys.

Week 2 · Build: Smart Engagement and micro-campaigns on Shopify

With access in place, the implementations team builds your Smart Engagement flow and micro-campaigns directly on Shopify Flow, wired to the live customer profiles llea has started generating from your store.

Week 3 · Build: the same flows on your CEP platform

The team rebuilds that same Smart Engagement and micro-campaign logic natively inside your CEP (Klaviyo, MoEngage, CleverTap, or your platform of choice) so llea's predictions and segments reach customers on the channels you already send from.

Week 4 · Monitor: report and refine

We track how the campaigns are performing and share a week-on-week analysis with your team. Any feedback you have goes straight back into tuning the setup. Onboarding doesn't end at week four; it becomes a standing check-in.

What you're getting

A quick recap of what llea.ai does once it's live on your store.

• Predictive purchase intelligence. Know what each customer will buy next, when they'll buy it, and how likely they are to convert, before they do.
• 1:1 marketing personalisation. Send the right message, on the right channel, at the right time, powered by a live profile of every customer.
• Micro-campaigns. Move slow-moving inventory fast by matching the right products to the customers most likely to buy them.

Micro-campaigns you can run

Each micro-campaign is a pre-built targeting recipe: it picks the audience for you from your own shopper signals (brand and category affinity, size and colour history, intent score, geography, purchase cadence, and lifetime value), then runs the sequence across email, SMS, and WhatsApp.

• Price Drop. Move slow stock to the people most likely to buy it. Matches shoppers on brand and category affinity, size and colour history, intent score, geography, and past discount behaviour, then nurtures them across email, SMS, and WhatsApp.
• New Drop / Early Access. Launch a product to the shoppers most likely to care. The same targeting engine minus the clearance-specific rules, plus a loyalist, researcher, explorer, and impulse split you can send as quotas or timed waves.
• Back in Stock. Tell the people who wanted it that it returned. Targets shoppers with interest or cart activity on the exact variant while it was unavailable. No discount needed.
• Replenishment. A reorder nudge timed to each shopper's own cadence. Fires a set number of days before each customer's predicted next purchase, using their personal purchase frequency.
• Cross-sell Companion. Sell the natural second purchase. Finds buyers of a product who never bought its strongest co-purchase companions, and pitches the companion.
• Win-back Lapsed. Reach shoppers who have gone quiet. Targets customers lapsed well beyond their own usual cadence, weighted towards high lifetime value.
• Geo Burst. Push a product where demand is concentrated. Uses per-city and per-region interest signals to focus a campaign on the places already leaning in.
• VIP Exclusive. Reward your best customers with access, not discounts. Targets the top lifetime-value decile and loyalist segment with early or exclusive access.

Common questions during onboarding

Do we need to migrate off Klaviyo (or our current ESP)? No. llea.ai isn't a replacement for your email/SMS tool; it's a data layer underneath it. It pushes live profiles, predictions, and segments straight into the flows and campaigns you already run via Shopify Flow. No migration, no new contracts.

How long does setup actually take? llea.ai connects directly to Shopify and your existing marketing tools via Shopify Flow, so there's no dev work required to get started. The four-week plan above covers install through to your first performance review.

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