







Cardboard mailing boxes
Custom postal boxes are a cost-effective option if your business sends eCommerce orders, mail-order goods, or even supplies to retail outlets.
Postal boxes protect goods throughout the various touchpoints of the postal and courier services. They can also minimise costs by reducing weight and volumetric size, adhere to Royal Mail pricing in proportion (PIP) guidelines and feature printing.
At GWP, we tailor virtually every product you source to your specific requirements. Whether this is the size, style, inserts, print or other customisation options, your custom postal boxes provide the optimum level of protection for your products. This approach also ensures you receive genuinely cost-effective pricing as you don’t pay for materials or features you don’t need.
Benefits of custom postal boxes
By working with GWP to create your custom postal boxes, you can expect:

What our customers say...

GWP have been excellent in supporting us since our launch, and we would like to say a huge thank you to them and the handful of partners that have helped us over the past 18 months. We are both incredibly grateful and excited that more people will be able to discover what chocolate should really taste like!
Giles Atwell | Managing Director | Upside Down Chocolate

We’re very pleased with how the packaging turned out – we feel it reflects what our company is about and helps to highlight the premium product we offer. GWP were responsive, easy to work with and follow customer service has been great too. I would be happy to recommend them to anyone looking to source high quality packaging.
Charley Surridge | Director | Swannack

I just wanted to say thank you for all your help. When the boxes arrived we were all thrilled with how they’ve turned out. The quality is incredible, and we love how everything came together. Thank you again! We’ll definitely be in touch if we have any future projects for these items.
Emily Gunn | Marketing Assistant | C3 Marketing
FAQs
What are postal boxes?
Postal boxes are a form of single-trip packaging used for shipping products, goods or orders from your business to your customers. Usually manufactured from corrugated cardboard, postal boxes are available in various styles and sizes and offer several custom options.
Can mailing boxes feature printing?
Printing your postal boxes is surprisingly cost-effective. Printing can add simple company logos and branding, handling instructions and health and safety information. You can even wow your customers with full-colour graphics that are only revealed upon opening the package (creating a unique unboxing experience).
What type of cardboard do postal boxes use?
The grade of cardboard used to manufacture postal boxes can and should vary depending on the type and weight of the products you are shipping. One advantage of specifying bespoke postage boxes is that a packaging designer can match the material to the intended application. For example, lightweight products like clothing may only require a single-wall material, whereas heavier items may need double-wall boxes.
What are PIP boxes?
PIP stands for “pricing in proportion.” This terminology relates to the pricing structure Royal Mail introduced in 2013. Postal boxes of certain sizes qualify for specific pricing bands. As a result, it is possible to specify PIP mailing boxes that meet the requirements for large letters, small parcels, medium parcels, or large parcels.
Should I use stock or bespoke postal packaging?
Whether you should use stock or bespoke postal boxes depends on various factors, including your application, the volume of parcels you send, and the types of products you ship. As a rough rule of thumb, stock boxes are usually best if you only use low volumes or must adhere to specific industry guidelines or sizes. Custom packaging usually provides better performance, is frequently cheaper in the long run, and can offer numerous other benefits.

Why GWP Packaging?

35+ years of experience
We have extensive experience, successfully designing and manufacturing eCommerce packaging for as long as businesses have been selling online.

UK packaging experts
We have a friendly team of award-winning packaging experts at our UK sites, including designers, sales, customer support and manufacturing teams.

Competitive advantage
Our approach, coupled with in-house manufacture, means you can benefit from reduced costs, better efficiency, more sales, and improved sustainability.

A business you can trust
Although operating as an independent specialist, GWP Group are proud to be part of Macfarlane, the UK’s largest protective packaging distributor.
Disclaimer: Application images on this page may have been enhanced or created specifically to illustrate a products features and/or potential uses. Please see our content policy for further details.
Quotes, technical info and advice
Speak with our UK-based packaging experts
The information on this page has been collated, checked and approved by several of our corrugated packaging experts:



































