Multi‑Carrier Shipping in One Platform
Access leading domestic and international carriers through a single integration, contract and daily collection.
Flexible Integrations & API
Connect using our RESTful Shipping API, platform plug‑ins, third‑party connectors or spreadsheet uploads. Ideal for any workflow or system setup.
Fast, Automated Label Production
Create labels in bulk, on demand or at the packing bench — whatever fits your operational style.
Smart Shipping Rules
Use automated service‑preference lists and rules based on weight, cost, speed, parcel type or destination to select the right carrier every time.
Better Shipping Rates
Benefit from competitive, pre‑negotiated multi‑carrier rates thanks to Whistl’s buying power and long‑standing carrier relationships.
Expert Support
A team of specialists helps with onboarding, integrations, carrier escalation, delivery queries and ongoing performance optimisation.
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Multi-Carrier Access
Print labels for multiple UK and global parcel carriers from one unified dashboard.
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Smart Routing Automation
Automatically select the most cost-effective or fastest carrier based on package dimensions, weight, destination and service level agreements.
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WISMO Reduction
Proactive delivery monitoring and real-time tracking alerts reduce customer enquiry rates.
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Performance Analytics
Monitor carrier SLA compliance, on-time delivery rates, and average cost per parcel in real time.
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Developer-Friendly RESTful API
Robust API documentation and sandbox environments allowing your in-house engineering team to build custom shipping workflows.
“Whistl's technology has given us the flexibility to offer multiple carriers and return methods, providing a significantly improved experience and greater choice for our customers. The integration process was smooth from start to finish, and we were supported throughout by an exceptionally dedicated and knowledgeable account manager. We have been extremely pleased with both the service and support provided by Whistl and look forward to continuing our successful partnership for many years to come.”
“We would have to employ at least three additional customer service advisers of our own to manage the carriers. That’s a big saving for a business like ours. We really do see Whistl Parcels as an extension of our own business, and we have spent the last three years further integrating and refining the customer service team to create more efficiencies and strengthen our proposition.”
“Whistl Parcels supplied direct contact with our development team on each occasion and worked with us to integrate seamlessly with each other’s systems. From start to finish there were no interruptions to production. Transport solutions are flexible, with communications down to depot level. Dedicated Account and Customer Services Managers. We have found Whistl Parcels to be supportive and careful in listening to our needs.”
