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Sell from Custom Platform to OnBuy - Any Store, UK Market Ready

Your e-commerce platform shouldn't be the barrier between your products and OnBuy's millions of UK buyers. Koongo connects any store to OnBuy via a full two-way integration - products sync out, orders come back in, automatically.

OnBuy Detail Start Free Plan
*Free plan available. No credit card required. Paid plans from 24 EUR/month.
Custom Platform
OnBuy

What is Custom Platform + OnBuy Integration?

Koongo connects stores running on any e-commerce platform to OnBuy via a two-way API integration - syncing product listings, pricing, and inventory to a competitive UK marketplace with millions of buyers, no listing fees, and direct commission payments. The OnBuy Integration Wizard guides you through the full setup step by step inside Koongo - no coding needed regardless of which platform powers your store. Built-in health checks validate your configuration before your listings go live. Once active, OnBuy orders are imported back into your store automatically and inventory updates accordingly. For merchants on custom or less common platforms, Koongo acts as the bridge between your existing product data and OnBuy's marketplace requirements. The Rules Editor lets you map attributes, filter products, and adjust pricing to meet OnBuy's standards - without modifying your store setup.

Key Benefits:

From signup to first OnBuy order in 3 steps

1
Create your Koongo account, start your free plan, and connect your Custom Platform store.
2
Set up the connection to OnBuy and automate your product listings — no manual work needed.
3
Start getting new sales from OnBuy. Track and manage your orders directly in your Custom Platform store.

Why now? What’s at stake

If you connect Custom Platform to OnBuy with Koongo

  • Reach new customers instantly on OnBuy

  • Increase product visibility and boost sales

  • Avoid errors that cause listing rejections or overselling

  • Free up time and focus on growing your business

If you don’t automate this process:

  • Miss out on sales due to delayed updates

  • Risk overselling or violating platform policies

  • Spend hours manually fixing product or order issues

  • Let competitors list faster and sell more

FAQs

Yes. Koongo's Integration Wizard works with any e-commerce store and walks you through every setup step - product mapping and going live on OnBuy. Built-in health checks flag any issues before your listings are published, so no technical background is required.
OnBuy requires a registered business entity to sell on its marketplace. Koongo's Rules Editor maps your store's product fields to OnBuy's required format and applies any adjustments before your listings go live.
Koongo detects the stock change and updates OnBuy automatically. Your listings stay accurate for OnBuy's UK and global buyers so customers cannot purchase products you can no longer fulfill.
Koongo imports OnBuy orders directly into your store's management system. Inventory adjusts automatically with each import, keeping your stock data accurate across all active channels without manual reconciliation.
The wizard is designed to get merchants live without a lengthy setup. Your timeline depends on catalog size and how much product data mapping is needed. Koongo's support team is available to help you through any steps that require guidance.
OnBuy is a UK marketplace with millions of buyers, no listing fees, and direct commission payments on completed sales. It also reaches France, Germany, Spain, and more. For any registered business merchant on any platform, its no-upfront-cost model and multi-category UK reach make it a relevant addition to any multichannel strategy.
Yes. From one Custom Platform connection, Koongo manages listings, inventory, and orders across multiple OnBuy at the same time. The Rules Editor lets you tailor products and data per marketplace.

The connection between Custom Platform and OnBuy is ready for you

Start your free plan, connect your store, and begin selling on OnBuy today — all from your Custom Platform account, powered by Koongo.

Start selling on OnBuy from Custom Platform