D2C Watch Reseller · E-commerce

Sales Channel Inventory Sync

Unified product data across Shopify, eBay, and Chrono24 for a fast-growing D2C reseller - eliminating manual updates and inventory mismatches across platforms.

Time Saved
80%
Mismatches
0
Launch Speed
2x

The Challenge

A fast-growing D2C watch reseller was managing operations across multiple online sales channels. Each platform had its own format for product attributes (titles, prices, availability), which required separate manual updates - leading to operational overload and delays in launching new products.

Key pain points: no single source of truth for inventory and product data, each sales channel had its own formatting rules and catalogue standards, product updates had to be done manually on each platform, high risk of out-of-stock products still being listed, and no visibility into what's live where.

What We Built

A custom backend tool built on SmartSuite that gives the business one control panel for all product operations. Update a listing once, and it pushes to every storefront in real time via Make.com automation workflows.

The system includes product CRUD workflows, sales channel sync from Shopify to SmartSuite, and integrations with Shopify APIs, eBay APIs, HubSpot APIs, and Chrono24 APIs via Missive App.

How the Sync Works

SmartSuite is the single source of truth. Every product lives there once, with a unified schema covering title, price, condition, availability and images. When a record changes, a Make.com scenario picks it up and translates it into each channel's format before pushing it out — so a price change or a sale on one storefront reaches every other storefront without anyone touching it.

The translation layer is where the real work sits. Each platform enforces its own title lengths, category taxonomies and image rules, so the sync applies per-channel mapping, resizes images and generates platform-specific metadata on the way out. New channels plug into the same schema rather than needing a parallel process.

Solutions Delivered

  • Single product database on SmartSuite as the source of truth
  • Product create, update and delete workflows pushed to every channel
  • Shopify-to-SmartSuite sales sync so stock reflects real orders
  • Integrations with Shopify, eBay, Chrono24 and HubSpot APIs
  • Per-platform field mapping, image resizing and meta generation
  • A clean, tagged catalogue built from the client's existing listings

The Results

80% reduction in time spent updating product details across platforms. Zero inventory mismatch cases reported in the last 90 days. 2x faster product launch time. Team can now launch across platforms in under 20 minutes vs. 2-3 hours before.

Behind the Scenes

We mapped every platform's quirks with the client team — eBay's listing rules differ wildly from Shopify's and Chrono24's. We reverse-engineered their existing listings to clean, tag, and unify them under one schema flexible enough for new channels later. Custom logic handles image resizing and meta generation per platform.

Want a system like this?

Every build here started with a free workflow audit: we watch how the work actually runs, then tell you what is worth automating and what it would cost.

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