Letterbox Boxes

Large letter boxes

Ideal if your business sends many small products via post or courier, letterbox boxes fit through standard UK letterboxes. Their size allows for the delivery of your orders without customers needing to be at home to accept the delivery. They also meet Royal Mail’s PIP (pricing in proportion) guidelines.

You can specify your letterbox boxes in custom sizes tailored to your products. They can also feature printing on both inside and outside surfaces and integral or removal inserts to increase transit protection.

At GWP, our custom letterbox boxes are designed and manufactured at our UK site to your exact requirements. Our designers work closely with you to ensure the optimum cost, appearance, performance and sustainability are all achieved.

No obligation
Free, expert advice
Competitive pricing

Benefits of custom letterbox boxes

By sourcing custom letterbox boxes from GWP, you can expect:

Custom sizes tailored perfectly to your products.
Minimised returns due to missed deliveries and shipping damage.
Bold, crisp printing to enhance the opening experience for your customers.
Easy to assemble to reduce labour costs, including tapeless closures.
Optional inserts to hold contents in position during delivery.
Use of FSC certified materials that are easy for end users to recycle.
Cost-effective in low and high volumes, scaling with your business.

A courier delivering letterbox packaging to a persons home

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

Great company to work with, very helpful and friendly. We needed a custom box designed and GWP produced the initial sample prototypes within 2 weeks from our initial meeting. Production volume order arrived to spec and ahead of schedule. Will use again.

Jamie Jones | Google review

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 letterbox boxes?

Letterbox boxes are packaging with a width and height that allow them to fit through standard UK letterboxes. The length of the pack can be adjusted to accommodate different-sized products. Letterbox packaging allows items to be delivered even if the recipient is not at home.

What products are letterbox boxes suited to?

Letterbox boxes are popular for a wide range of products. They are suitable for games, DVDs, books, brochures, chocolates, clothing, flowers, and any product with similar dimensions. They are also commonly used for subscription box packaging.

Do letterbox boxes adhere to Royal Mail pricing bands?

Letterbox boxes typically fall within the Royal Mail PIP (pricing in proportion) guidelines. These guidelines determine the prices for parcels that they deliver. Adhering to these can further reduce your expenditure through reduced delivery costs.

What are letterbox boxes manufactured from?

Letterbox boxes typically use single-wall cardboard, which allows for maximum space within the pack. However, the specific grade is chosen based on the product’s weight and fragility.

Can letterbox boxes include inserts?

Although letterbox boxes have limited internal space, you can include inserts. Die-cut cardboard fittings or foam packaging inserts (such as Stratocell) are the most common, helping to brace and cushion products from damage during shipping.

A cardboard letterbox pack dropping through the door of a person's house

Why GWP Packaging?

The outside of GWP Packaging's manufacturing site in Cricklade, Wiltshire

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.

A team of packaging designers working on a customer brief

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.