The checkout and shipping platform for ecommerce

Checkout + Shipping = Growth

From checkout to delivery and returns: our software supports you in every step of the shipping process. Wuunder combines smart automation with personal service from transport and e-commerce experts, so you benefit from the possibilities of the latest technology and the certainty of human expertise.

Based in the Netherlands, Belgium and Germany. Wuunder serves retailers from SMB to enterprise, across Europe and worldwide.

Where Wuunder brings logistics expertise, Paazl who was acquired in 2024, excels as an e-commerce specialist.

Since June 2026, we are a Certified B Corporation™.

GreenChoice

Every order starts with a choice.

Wuunder makes sure it's the right one.

When a customer selects a delivery option, it triggers a chain reaction: warehouse planning, carrier selection, route efficiency, and last-mile transport. Our shipping platform connects these steps from the moment of checkout. GreenChoice automatically matches every order to the smartest carrier and optimal delivery moment, based on speed, cost, and CO₂ reduction. By spreading deliveries across the week, we flatten the Monday peak in the warehouse and the Tuesday peak at the carrier. Fewer temporary staff needed, lower operational costs. The result: fewer failed deliveries, full vehicles, and a supply chain that works for your business, your warehouse, your carriers, and the planet.

The results have been scientifically researched by the University of Groningen and speak for themselves:

- up to 30% higher conversion,
- 88% of consumers selects the GreenChoice option, - 20% fewer delivery vans on the road, - 7.5% lower CO₂ emissions.

This enables our customers to achieve:

- up to 30% lower fulfilment costs,
- a 40% faster warehouse process,
- 70% fewer support queries thanks to proactive track & trace communication.

Wuunder and the University of Groningen were the first to scientifically research delivery options in a live checkout environment, proving their impact on the entire shipping chain: Read more

We create perfect delivery and checkout experiences for ambitious brands

Everyone loves your shipping options

Checkout

Turn your checkout into a conversion machine

Boost conversion and customer satisfaction with Wuunder Checkout, formerly known as Paazl Checkout. Show the perfect and environmentally friendly shipping option at exactly the right moment. Use your checkout to save cost in your warehouse process.

The best route to the front door

Ship

All shipments and labels in one system

Book the cheapest or fastest shipping service via our database with more than 100,000 rates and services. Or use your own carrier transport rates. Label all your shipments in one place with our multi-carrier platform, from letterbox parcels to international pallets. Simple and efficient.

Save hours with bulk label processing
Cut shipping costs through automatic carrier optimisation
PuzzlPack Smart packaging optimization

Proactive, not reactive

Track

Proactive updates your customers appreciate

Shipping issues are detected and communicated early, so your customers barely feel the impact.

Fewer shipping errors with clear warehouse and transport visibility
Fewer enquiries thanks to proactive updates
Happier customers with branded emails

Returns, simple for everyone

Returns

Returns that work

Give customers a genuinely pleasant returns experience: fast, simple, personal and hassle-free.

Happier customers with label-free returns
Automatic processing speeds up refunds
Smart return rules prevent abuse and unnecessary costs

Smart tech, human expertise

Automation where it makes sense, personal service where it matters. Our combined strength in checkout optimisation and shipping management delivers maximum efficiency. Our team brings expertise and personal advice whenever you need it.

Why our customers choose Wuunder:

Scalable technology

From start-up to enterprise

Whether you send 100 or 10,000 orders daily, our APIs and integrations scale with you. From WooCommerce and Magento to Shopify and beyond.

Full peace of mind

Personal service

No chatbots or endless searching through FAQs, but real e-commerce and transport experts. Our team stands by your side during the implementation of APIs and carriers, and guides you in optimizing your checkout and transport choices.

Always the best choice

300+ carrier connections across Europe and worldwide

Our smart algorithm automatically finds the best option based on price, speed and sustainability. From DHL and PostNL in the Benelux to Colissimo in France, Royal Mail in the UK and DHL Express worldwide. Letterbox parcel, package, pallet or freight by bike, van, lorry or plane.

Sustainable growth

GreenChoice: shipping with impact

Cut your CO₂ emissions whilst boosting conversion and warehouse efficiency. Our algorithm automatically selects the greenest option within your criteria. Good for the planet and your brand.

Results you can count on:

Up to 30% higher conversion with GreenChoice

40% faster warehouse process

70% less support calls

25% lower shipping costs with Puzzlpack

Ready to transform your shipping?

We'll show you how Wuunder can change your daily operations and customer NPS.

Complete your shipping experience:

• Checkout - Optimize your checkout conversion
• Ship - Automate your shipping process
• Track - Automated customer communication
• Returns - Effortless returns handling