When a courier drops a parcel, throws it into a cage or runs it through an automated sortation system, the packaging is on its own. A certification is the closest thing to a guarantee that it was tested to survive exactly that – before the product inside was ever put at risk.
For most small businesses buying off-the-shelf mailers, certifications are background noise. For anyone procuring in volume, supplying to retailers, or shipping regulated goods, they become a practical requirement that affects whether products arrive intact, whether retailers accept your packaging, and in some cases whether you can legally put certain materials on the market.
What shipping packaging certifications actually test
Certifications cover different aspects of packaging performance. The main categories relevant to e-commerce and B2B shipping are:
Carrier performance standards – the major carriers (Royal Mail, DPD, DHL, Evri in the UK) publish their own packaging guidelines and in some cases run internal approval processes for high-volume shippers. These aren’t formal certifications, but non-compliance means damage claims get rejected. The tests typically cover drop resistance, compression, puncture resistance and label adhesion.
ISTA standards (International Safe Transit Association) – a widely recognised set of test protocols that simulate the distribution environment: vibration, drop, compression, atmospheric pressure. An ISTA-tested package has been put through a lab simulation of what it will experience in a real supply chain. Retailers and 3PLs increasingly ask for ISTA certification as part of supplier onboarding.
Amazon’s Frustration-Free Packaging (FFP) and SIOC (Ships in Own Container) – specific to Amazon’s fulfilment network. FFP-certified packaging is easy to open, made from recyclable materials, and protects the product without over-packaging. For sellers using FBA, having FFP or SIOC certification eliminates the additional prep fees Amazon charges for non-compliant packaging.
UN certification – required for packaging used to transport dangerous goods (Class 3 flammables, Class 8 corrosives etc.). Not relevant for most e-commerce, but mandatory for industrial and chemical distributors.
BRC/BRCGS Packaging Materials standard – a food and pharmaceutical sector certification that covers the safety and quality management of packaging manufacturing. Required by most major UK food retailers for any packaging in direct contact with food products.
Why certifications matter more than they used to
Two shifts have changed the certification landscape in the UK over the last few years.
The first is EPR (Extended Producer Responsibility), which came into force in the UK in 2023. Businesses placing packaging on the UK market above certain thresholds must report the weight and type of packaging they use and pay fees based on that data. The recyclability and recycled content of packaging directly affects the levy rate. Certifications or declarations from packaging suppliers supporting recycled content claims are now part of the compliance paper trail.
The second is retailer requirements. Most major UK retailers – supermarkets, fashion chains, electronics retailers – now include packaging specifications in their supplier contracts. These typically reference recycled content percentages, recyclability standards and in some cases specific certifications. A supplier who can’t produce documentation from their packaging manufacturer loses leverage in buyer negotiations.
For companies reviewing their packaging supply chain, checking what certifications their current supplier holds – and what documentation they can provide – is a straightforward starting point. Filmar Group’s guide on what are shipping packaging certifications covers the key standards relevant to courier and e-commerce packaging in more detail.
Practical implications for procurement
When you’re buying bubble mailers, poly mailers or padded envelopes in bulk, the certification questions worth asking your supplier are:
- Has the product been tested to any ISTA protocol, and if so which one?
- Can you provide a declaration of recycled content, and at what percentage?
- Is the material recyclable in kerbside collections or only specialist streams?
- Do you hold any carrier-specific approvals (Royal Mail, DPD, DHL)?
- What documentation can you provide for EPR reporting purposes?
A supplier who can answer these questions with documentation is one whose product you can defend to your own customers, retailers and regulators. One who can’t is a liability risk that grows as compliance requirements tighten.
Shipping packaging certifications are not a marketing exercise – they are evidence that a material or process has been independently tested against defined criteria. For most e-commerce businesses the immediate relevance is carrier compatibility and EPR compliance. For those supplying into retail or regulated sectors, ISTA, BRC and specific retailer standards become hard requirements. Asking your packaging supplier the right questions before you place a large order is considerably cheaper than finding out the answers after a batch of damaged returns or a failed retail audit.
