Warehouse.si is a boutique fulfillment center based in Slovenia, specialized in handling cosmetics, dietary supplements, and other small-sized products.


Founded in 2018, we’re among the highest-rated fulfillment providers in the region, with over 160 Google reviews and an average score of 4.9/5.


We ship hundreds of parcels daily across all EU countries, the United Kingdom, and the United States. Thanks to our preferred partnerships with major couriers like DHL, DPD, GLS, and Packeta, we offer extremely competitive worldwide shipping rates.


Our warehouse is nothing like the traditional dusty fulfillment hubs – it operates more like a clean, organized medical facility, ideal for sensitive products. We are fully HACCP certified.


Warehouse.si uses a proprietary fulfillment system, developed in-house over several years, ensuring full automation of all order processes. We offer seamless integration with WooCommerce and Shopify (plug & play plugin), as well as custom API connection options. Located in a prime area of Ljubljana (Slovenia’s capital), we also enable local pickup services – a popular option for Slovenian customers.


We are trusted by globally recognized brands such as Paula’s Choice, WeightWorld, Evy Technology, and PostQuam. Every client is assigned a dedicated account manager, always reachable via email, phone, or live chat.


Warehouse.si is the ideal choice for online merchants seeking accuracy, premium service, and a personalized approach. Scope of integration:
- Automatic order import from Base (Orders from Base are automatically fetched every 5 minutes. All relevant customer, product, and shipping data is mapped and stored in our system).
- Synchronization of product catalog and stock (All products from Base (with SKU and name) are synced to our warehouse system.
- Stock levels from our warehouse are automatically pushed back to Base and updated in real-time).
- Order status updates & tracking (Once an order is packed/shipped, the status is updated in Base.
- Tracking numbers are automatically sent to Base and visible to the customer).

To activate the integration:
  1. Go to your Base account → My Account → API.
  2. Generate or copy your API key.
  3. Send us your API key to [email protected] (after signing a contract with us).
  4. We will activate the synchronization for your account within a few minutes.

Check Warehouse.si integration with other systems:

Warehouse.si + Marketplace

Warehouse.si + Shops

Warehouse.si + Accounting systems

Warehouse.si + SMS applications

Warehouse.si + Other



Test all system integrations and functions free of charge for 14 days