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If you've built a Shopify Function, you already know the input query is static — it's a fixed `.graphql` file compiled at deploy time. That's fine when your logic only needs data Shopify already exposes (cart lines, delivery addresses, discount classes). It breaks down the moment your function needs something the *merchant* configured through your app's admin UI — say, "only apply this shipping discount to products in these three collections," where the collections are chosen per-shop and can change at any time.

A merchant emailed us at 11 on a Sunday night. Their festival sale had ended at midnight and roughly 400 variants were still sitting at sale prices. Someone on the team had exported a "before" CSV, except it got exported on day two of the sale, so half the rows already had the discount baked in.They spent Monday morning rebuilding prices from old order line items. The discount was never the hard part. Putting 400 prices back was.

A merchant sent us a pricing table in May. She’d been running it out of a Google Sheet for two years. Six units, 10% off. Twelve units, 15% off. Twenty-four units, 20% off. Her four wholesale accounts paid a flat 35% off everything, no minimum, no code, permanently. Nothing exotic there. That’s how a lot of stores price. Shopify, out of the box, does the first line of that table and stops.

A behind-the-scenes story of building a Shopify product upsell and cross-sell app, told through the lens of what actually makes an idea spread and stick.

A coffee roaster had 60 products and a nine-option filter sidebar almost nobody touched. Filters assume the shopper already knows the answer. Here’s what we built instead, how the weighted scoring works, and the case where the quiz refuses to give a confident answer.

A merchant asked us to look at their support setup. A week of their inbox came back as 61 emails, and 44 of them were four questions asked over and over. Every answer already existed somewhere on their site. None of it was where the shopper was standing. Here is what we changed and the engineering bits that mattered.

The message we get most often after a merchant's first bundle campaign is some version of this: revenue moved, so why didn't profit? Usually because two costs went into the campaign and only one of them showed up in the report.

Learn how to add Build Your Box to your product page, configure pricing and minimum items, and set up the theme app block correctly. Plus, avoid common checkout issues with third-party providers.

Fast Bundle was temporarily removed on 18 July, reinstatement in progress. If you can't wait, here's how to rebuild your bundles without breaking checkout.

A merchant's staff were creating orders through a hacked-together storefront flow. We replaced it with a private app built for the way they actually work.

A flash sale on one store was silently delaying inventory sync for every other merchant. Here's the queue design fix that made processing fair.

A merchant was manually uploading bundle CSVs to their ERP every morning. We automated the whole thing with a nightly scheduled job. Here's exactly how.

Migrate your Shopify Ruby on Rails app to expiring offline access tokens. Step-by-step technical guide covering database migrations, model storage updates, context setup, and background task management.

Prepare your Shopify app for the mandatory transition to expiring access tokens. Understand OAuth token rotation, and learn how to prevent critical background job race conditions.

Let’s explore how each Essenify app can help you boost conversions, save time, and make the most of BFCM 2025.