Diatome is a B2B SaaS platform that enables e-commerce brands to launch their own circular commerce program, integrated directly into their existing website. Like launching a new collection on your e-shop: you decide almost everything (product pages, rules, pricing...).

Diatome integrates directly into your existing website: your customers stay with you, not on a third-party platform. It's 100% white-label (your brand, your experience), and most importantly you can offer a mixed basket where customers buy new AND secondhand items in the same checkout.

Our 3-in-1 solution covers all cases. The C2C Marketplace allows your customers to sell to each other directly on your website. Buyback / Trade-in lets you repurchase items for a gift card, then resell, donate or recycle. Stock Redistribution helps you sell your excess inventory, end-of-line and returns on your e-commerce, or create custom product pages in 1 click.

Diatome supports several profiles: e-commerce brands (fashion, lifestyle, kids, sports, home...) who want to regain control of their secondary market, eco-responsible brands who want to offer full transparency on their products' lifecycle, and secondhand specialty shops looking to streamline their reconditioning and resale process.

About 1 hour for Shopify stores thanks to our native app. Our team handles the technical setup with you.

Shopify with a native app. For other platforms (PrestaShop, WooCommerce, custom...), we offer a flexible API.

Not for daily use. Diatome is designed for non-technical teams: we handle the integration, and the admin interface is intuitive. For advanced development or deep customizations, a developer may be needed.

Directly into your existing website, no separate subdomain. Your customers navigate in your universe, with your design, your product pages. Like launching a new collection.

Yes, it's 100% white-label. You control the design, product pages, emails, moderation rules, allowed categories. All communications (email, SMS) carry your brand identity.

In C2C mode, no. Sellers ship directly to buyers via our specialist C2C carriers across Europe. Diatome handles payments, notifications and communications automatically, with shipping label rebilling. For your unsold inventory, you can use your own carriers for resale from your warehouses.

No. Diatome is a software solution (SaaS), not a refurbishment center or warehouse. We don't store products and don't handle physical flows. If you need refurbishment services, we can connect you with specialized partners.

You keep control of your customer relationship. And big news for 2026: AI works for you! Automatic descriptions, smart pricing, answers to common questions. A guaranteed time saver.

Your photos and product pages are created automatically from your new product data, even if your old collections are no longer online! Photos can also be retouched by AI in 1 click for a professional look.

Yes. Allowed categories, min/max prices, accepted conditions, required photos, auto-approval by criteria, custom buyback grids... You decide.

Two options at the seller's choice: bank transfer (via Stripe) or gift card on your store.

You define your policy. If the seller chooses bank transfer, you take a commission (typically 20%) plus fixed service fees including rebilled shipping costs. If the seller chooses the gift card, you don't pay commission but you retain the customer who comes back to buy from you. You decide the gift card value through your pricing grids.

Fixed service fees are applied, including shipping costs. The shipping costs are re-billed to you as a merchant

Via Stripe (PCI DSS Level 1 certified). Diatome never stores credit card information.

No, data shows the opposite. 40% of secondhand buyers are new to the brand, and 53% of orders include both new AND secondhand items in the same basket. Secondhand typically represents less than 5% of total revenue. Resale is an acquisition and retention channel, not a competitor.

Our clients observe on average 40% new customers acquired through the secondhand channel and 53% mixed orders combining new and secondhand. Sellers list an average of 4 items each, showing lasting engagement. 60% of gift cards are used within 2 months, and customer satisfaction reaches 98%.

When a seller chooses the gift card over bank transfer, they often get a better value and must come back to buy from you. 60% of gift cards are used within 2 months: it's a powerful lever for loyalty and repeat purchases.

From your product data, Diatome automatically calculates your impact indicators: number of items given a second life, CO2 avoided, resources saved (water, raw materials), waste diverted from landfill. This data is exportable for your CSR reports and communications.

Monthly subscription + commission on sales (when applicable). The amount depends on your volume and needs. Contact us for a personalised quote.

We offer a minimum of 2-week pilot period to validate results before commitment. The trial is free.

No. Subscription + commission on sales + re-invoicing for logistics that's it.
No additional setup fees for standard integration.

1. Book a demo: we show you the platform in action.
2. 2-week pilot period: test for free with your real customers.
3. Integration: we configure Diatome on your site (~1h for Shopify).
4. Launch: communicate to your customers and accept the first listings.
That's it !

Typically 2-4 weeks for the first sales, depending on how intensively you communicate to your existing customers.

Yes. Book a demo and we'll share concrete examples from brands in your sector (fashion, kids, lifestyle...).

Yes. Data stored in the EU, encrypted at rest and in transit. You remain the owner of all customer data.