Brief
Replace a critical delivery app without stopping sales
Les 3 Maîtres Gourmands, based in Laval, sells ready-to-eat meals and catering online. A Maze client since its migration to Shopify in 2022, the company now generates about 90% of its revenue through its online store.
In September 2026, the app that managed delivery and pickup calendars stopped working properly. Catering customers were being shown the ready-to-eat calendar instead of their own. Maze was brought in to move the store to Shopify Plus and rebuild the entire delivery logic directly in the checkout.
Goals
Take back control of a critical function
The goal was to stop relying on a third-party app for the most important function of the store. Each service had to show the right calendar, with the right days, the right fees and the right rules, no matter what the customer puts in the cart.
The new setup also had to cut the number of paid apps and lay a solid foundation for what comes next, including selling to businesses from the same store.
Tools and partners
Complexity and challenge
Two services, two calendars, one address
Ready-to-eat meals are delivered on Mondays and Tuesdays only, with an order cutoff on Saturday at 5 p.m. Catering is delivered all week, on different time slots. To keep these two calendars apart, the store used two Shopify locations at the same address.
After about four years without issues, the delivery app started matching those locations at random. Testing with the app's support team didn't fix it. With most of the company's revenue on the line, every day counted.
Approach
The analysis was already done, so the decision was fast
A few months earlier, Maze had completed a feasibility analysis for Les 3 Maîtres Gourmands covering store architecture, mixed carts, shipping frozen products and whether Shopify Plus made sense. One question sat at the center of it: were the limits coming from the plan or from the apps?
When the app failed, Maze laid out three clear options: wait for a fix from the app developer, switch apps, or move to Shopify Plus and build a custom solution. Maze also secured favourable terms from Shopify to ease the transition. The client chose Shopify Plus.
Solution
A checkout that knows the rules of each service
Maze moved the store to Shopify Plus and built the entire delivery and pickup logic directly into the checkout, using the platform's native tools. Customers choose their date and time as they pay, and the calendar they see depends on what is in their cart: ready-to-eat meals are only available on Mondays and Tuesdays, with a Saturday 5 p.m. order cutoff, while catering stays open all week.
When a cart holds both services, the checkout shows two separate calendars, each with its own rules. Delivery fees are calculated by distance, messages adapt to the customer's address, and order sheets were updated so the production team knows exactly what to prepare and when. The switch happened without interrupting sales.
Results
A stable store, fewer apps and a foundation for growth
The delivery logic was rebuilt in one week. Order errors were resolved and the store has been stable since launch. Two paid app subscriptions were replaced by a solution Les 3 Maîtres Gourmands fully controls.
On Shopify Plus, the company can now sell to businesses from the same store, a step already underway with Maze.
“When we moved to Shopify with Maze, we weren’t just changing platforms. Our online store now drives about 90% of our revenue, and our delivery model isn’t simple, Maze understood that from day one and built a setup that handles both without confusing our customers. They sat down with us and helped shape a new way of selling, from ready-to-eat meals to catering, and built the systems to make it run. Maze was a true strategic partner from day one, and they still are.”
Les 3 Maîtres Gourmands
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