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Sell from Custom Platform on Allegro, Poland's Largest Marketplace

Getting products from a custom or non-standard store onto Allegro means Polish-language listings and accurate per-category attribute mapping. Koongo provides the full integration layer - feed, mapping, and order sync - for any store setup.

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Custom Platform
Allegro

What is Custom Platform + Allegro Integration?

Koongo connects your Custom Platform to Allegro via API, syncing product listings, inventory, pricing, and orders to one of the leading marketplaces in Central and Eastern Europe. Whether your store runs on a proprietary system, a headless setup, or a specialized platform, Koongo connects your product data to Allegro's 22+ million buyers. The Allegro Integration Wizard handles setup step by step - no custom development required. Product configuration, order synchronization, and listing submission are covered through the wizard, with the built-in health report flagging issues before they affect your account. Allegro orders are imported back into your order management system once live. Koongo also offers predefined templates that simplify setup for custom environments. The Category Mapping tool retrieves Allegro's per-category required attributes, and the Rules Editor maps your store data to them. Koongo also maps Polish content from your existing store fields into Allegro's structure, since English listings won't reach Polish buyers.

Key Benefits:

What it takes to sell on Allegro - and what trips merchants up

Poland's dominant marketplace Allegro is Poland's leading online marketplace, with roughly 22 million active buyers against a population of about 38 million. Its catalog spans electronics, home goods, fashion, automotive, and groceries, and it's also growing in the Czech Republic and Slovakia.

Polish-language listings reach buyers Allegro accepts English listings, but Polish shoppers won't find or trust them - listing in English is the most common reason non-Polish merchants fail on Allegro. Koongo maps Polish content from your existing store fields, such as metafields or translation-app output, into Allegro's required structure, though it doesn't translate the text itself.

Per-category attribute parameters Allegro uses a structured, per-category attribute taxonomy similar to eBay's item specifics. Required fields vary heavily by category - electronics, fashion, and automotive each have their own mandatory parameters. Koongo's Category Mapping tool retrieves Allegro's required attributes per category, and the Rules Editor maps your store data to them.

Mapping and order sync, handled Attribute mapping flows through Koongo's Rules Editor, alongside Allegro Category Mapping, configured once and applied automatically on every sync. Order sync back to your store runs via the standard per-channel sync mechanism, so Allegro orders and inventory stay aligned with your store.

From signup to first Allegro 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 Allegro and automate your product listings — no manual work needed.
3
Start getting new sales from Allegro. Track and manage your orders directly in your Custom Platform store.

Why now? What’s at stake

If you connect Custom Platform to Allegro with Koongo

  • Reach new customers instantly on Allegro

  • 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

To reach buyers, yes. Allegro accepts English listings, but Polish shoppers won't find or trust them - listing in English is the most common reason non-Polish merchants fail on Allegro. Koongo maps Polish content from your existing Custom Platform fields, such as metafields or translation-app output, into Allegro's structure, though it doesn't translate the text itself.
Koongo's Rules Editor maps your Custom Platform product attributes to the fields Allegro requires. You connect your store, map your categories to Allegro's categories, and Koongo pulls Allegro's mandatory attributes so you can match them to your Custom Platform data - including transformations where the data needs reshaping.
Allegro uses a structured, per-category attribute taxonomy where required fields vary heavily by category - electronics, fashion, and automotive each have their own mandatory parameters. Koongo's Category Mapping tool retrieves Allegro's required attributes per category, and the Rules Editor maps your Custom Platform data to them.
Yes. Koongo imports Allegro orders into your order management system automatically via the standard per-channel sync mechanism, and syncs your inventory. You process them alongside your regular Custom Platform orders, with stock adjusting on each order to prevent overselling.
Koongo's health report shows which products failed and why - usually a missing category-specific parameter or an unmapped required attribute. You correct the mapping in the Category Mapping tool or Rules Editor and resubmit, without reconfiguring the whole integration.
Yes, but Allegro has seller requirements to meet first - including a registered business, a valid Polish VAT number, a Polish return address, and Polish-language customer support. Once your Allegro seller account is approved, Koongo connects your Custom Platform store and handles the product and order sync.
Getting started is straightforward. The Allegro Integration Wizard walks you through connecting your Custom Platform store, mapping categories and attributes, and activating order sync. Time to first live listings depends mainly on how much category and attribute mapping your catalog requires for Allegro.

The connection between Custom Platform and Allegro is ready for you

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

Start selling on Allegro from Custom Platform