What a marketplace integrator is and when to use one

A marketplace integrator is a platform that connects your catalogue with several sales portals at once: you publish once and the integrator creates, updates and deletes the listings on each portal for you. Instead of managing five accounts with five different panels, you work on a single catalogue and the integrator makes sure that Wallapop, eBay, Milanuncios or OLX always show the same stock and the same price.

What it does exactly

• It publishes your catalogue on every portal. Each portal asks for a different format: its own categories, mandatory fields, photo limits, titles of different lengths. The integrator translates your listing once into each format.
• It keeps stock synchronised. When you sell a part on one portal, the listing is removed from the rest before another buyer asks for it. This is the problem that costs the most money when you publish by hand.
• It centralises what comes back from the portals. Chats, orders and leads from every channel arrive in a single inbox, instead of being scattered across each portal's apps.
• It automates the repetitive. Bulk price changes, listing renewals, translation for portals in other countries or automatic categorisation, depending on the integrator.

Which problems it solves

The first symptom is usually time: publishing an item on four portals by hand is four times the same work, and every price change or every sale multiplies the task. The second is the stock error: selling the same part twice because the listing was still active on another portal. The third is attention: losing chats or leads because they arrive in five different inboxes and nobody checks them all.

With an integrator, the catalogue is managed once —from your own management system, your online shop or a CSV— and the portals become output channels, not extra work.

When you need one

As a practical rule, an integrator pays off if any of these three apply:

• You sell on two or more portals and publish or update by hand on each one.
• Your catalogue changes daily (listings, sales, prices) and keeping it up to date across all channels eats up hours of work.
• You receive chats or orders on several portals and you have already let one slip through by not seeing it in time.

If you sell few references that barely change and you only use one portal, you probably do not need one yet.

How to choose one

• Portal coverage: it should have a real integration (official, via API) with the portals where your buyer is, not just with the big international ones.
• Specialisation in your sector: a scrapyard needs OEM references and compatibilities; a dealership, leads and appointments; a second-hand shop, orders and shipping. Generalist integrators tend to fall short on these details.
• What comes back from the portal: publishing is half the work; check that orders, chats and leads are centralised too.
• How your catalogue goes in: it should connect to what you already use (your ERP or management system, your online shop or a CSV), without forcing you to keep the stock in yet another place.

Portal Hero is an integrator specialised in scrapyards, motorbike dealerships and second-hand shops, with official collaboration with every portal it integrates. You can see the full list on integrations or tell us what you sell and we will show it to you working with your own catalogue.