The Problem

Sunday Club runs a card game subscription where subscribers receive different issues on different release dates. Every order needed to be split by issue SKU, held until release, and fired automatically — without double-fulfilling or manual intervention. No off-the-shelf app could handle this.

The Approach

LCL3 built a custom automation stack using Mechanic with direct GraphQL access to fulfillmentOrder objects.

• Replaced two apps that couldn’t provide fulfillmentOrder-level control
• Built Mechanic automation to split orders by issue SKU on creation
• Implemented fulfillmentOrderHold — future issues held until release date
• Built daily 9AM release automation — only releases orders due that day
• Added idempotency to prevent double-splits
• Built cancellation protection to halt fulfillment on canceled accounts
• Created legacy backfill script for existing subscription orders
• Implemented ShipStation from scratch — carrier config, rules, Shopify sync validation
• Full end-to-end QA across all subscriber scenarios
• Created fulfillment SOPs, training videos, and live team training

The Results

• Fully automated release cycle — zero manual triggers required
• Orders split and held across 3 and 12-delivery subscription tiers
• ShipStation integrated and tested end-to-end
• Client team trained and running fulfillment independently
• System built to scale without degradation as volume grows