Postal Boxes & Mailing Boxes: The UK’s Most Trusted Supplier

Whether you're sending ecommerce orders, subscription boxes, gifts or business supplies, choosing the right postal boxes helps keep products safe throughout shipping and transit.

At Kite Packaging, we offer a range of postal boxes and mailing boxes designed to provide reliable protection while helping businesses manage postage and packaging costs.

Our range of postal boxes includes brown postal boxes, white postal boxes, ecommerce boxes, large letter packaging and specialist postal packaging solutions. Available in a variety of sizes and supplied flat packed for easy storage, our boxes are suitable for businesses of all sizes across the UK.

Postal Boxes For Every Business

Every business has different packaging requirements, which is why we stock a large range of cardboard postal boxes for a variety of products and shipping methods. Whether you're sending small parcels, subscription boxes, books or larger items, you'll find a solution to suit your needs.

Our range includes:

• Brown postal boxes
• White postal boxes
• Ecommerce boxes
• Long postal boxes
• Large letter boxes
• Specialist mailing boxes

All boxes are supplied flat packed to help maximise storage space and reduce handling costs. They are quick to assemble and available in flexible quantities, making them suitable for both growing businesses and established operations.

Postal Boxes By Size

Selecting the correct box size is one of the simplest ways to improve cost efficiency and protect products during shipping. Choosing a box with the right internal dimensions helps reduce movement during transit while avoiding unnecessary postage costs.

Our range of postal boxes includes options for:

• Small parcels
• Large letter formats
• Ecommerce orders
• Multi-product shipments
• Long and awkwardly shaped items

Large letter boxes are particularly popular because they help businesses stay within Royal Mail size limits, often reducing postage costs compared with larger parcel formats. For larger products, our mailing boxes provide additional space while still offering a secure fit.

Before placing an order, consider the internal dimensions of your product and allow room for any protective packaging materials needed during transit.

Cardboard Postal Boxes Made From Corrugated Cardboard

All of our cardboard postal boxes are manufactured from corrugated cardboard, providing a durable solution for everyday shipping applications. The corrugated structure helps absorb impacts and protect contents as parcels move through postal and courier networks.

Benefits of corrugated cardboard postal boxes include:

• Lightweight yet durable construction
• Reliable protection during transit
• Cost effective packaging
• Easy storage when flat packed
• Fully recyclable materials

These boxes are suitable for a wide range of products, from everyday retail orders to heavier items requiring additional support. For products that need extra protection, stronger packaging solutions and specialist formats are also available within our range.

Coloured Postal Boxes And Custom Printing

Postal packaging can play an important role in how customers view your brand. While a plain box remains a popular choice for many businesses, coloured postal boxes and custom postal boxes can help create a more memorable experience.

Our coloured postal boxes are available in a range of colours, helping businesses match their packaging to their branding. For a more personalised approach, we also offer custom printing options featuring your logo, artwork and brand messaging.

Benefits of custom postal boxes include:

• A stronger branded experience
• Greater brand recognition
• A more professional appearance
• A lasting impression for customers
• Enhanced customers unboxing experience

Whether you prefer a simple kraft finish or fully printed packaging, our team can help create postal packaging that reflects your business and products.

Postal Packaging For Ecommerce And Retail

Reliable postal packaging is essential for ecommerce businesses that ship products daily. Packaging needs to be easy to assemble, secure during shipping and available in the right sizes to support a variety of products.

Our ecommerce boxes and mailing boxes are designed to help businesses pack orders efficiently while keeping products safe throughout transit. Many feature quick-fold designs that reduce packing time and provide added security once assembled.

Whether you're delivering individual orders or managing high-volume fulfilment, the right postal packaging can improve cost efficiency while helping products arrive in excellent condition.

Book Wrap Mailers And Specialist Postal Packaging

Some products require more specialised packaging than standard postal boxes. That's why we offer a range of specialist postal packaging solutions designed for specific applications.

Our range includes:

• Book wrap mailers
• Capacity mailers
• Picture frame boxes
• Foam lined boxes
• CD, DVD and LP packaging
• Round postal tubes
• Triangular postal tubes

These products help protect fragile items and awkwardly shaped products during shipping. For items that need extra protection, foam lined boxes provide additional cushioning, while book wrap mailers offer a secure fit around books, magazines and printed materials.

Sustainable Postal Packaging Solutions

Sustainability continues to be an important consideration for businesses and consumers alike. Our postal boxes are manufactured using corrugated cardboard containing recycled materials and are fully recyclable after use.

Many products within our range use kraft materials sourced from responsibly managed supply chains. Choosing recyclable postal packaging can help reduce environmental impact while maintaining the quality and protection required for shipping.

By selecting durable and recyclable packaging solutions, businesses can support their sustainability goals without compromising on performance.

Why Choose Kite Packaging?

At Kite Packaging, we stock a full range of postal boxes, mailing boxes and specialist packaging solutions for businesses across the UK. From large letter boxes and ecommerce packaging to custom postal boxes and protective mailing formats, we offer products to suit a wide variety of applications.

Our customers benefit from:

• Extensive stock availability
• Competitive pricing
• Flexible order quantities
• Bulk discounts
• Next day delivery on many products
• Expert packaging advice

Whether you're sending small parcels, large shipments or fragile products, our team can help you choose the right solution for your requirements.

FAQs

Choosing the right postal box depends on the products you're sending, your shipping method and the level of protection required. Below are answers to some of the most common questions about our range.

What size postal box do I need?

The right box size depends on your product dimensions and any packaging materials used inside the box. Choosing a box with the correct internal dimensions helps create a secure fit while reducing unnecessary postage costs.

Are your postal boxes Royal Mail compliant?

Many of our postal boxes are designed to work within Royal Mail size guidelines, including large letter and small parcel formats. Product specifications provide further information on dimensions and suitability.

Do you offer custom printing on postal boxes?

Yes. We offer custom printing services for businesses looking to create custom postal boxes featuring their logo, artwork and brand colours.

Are cardboard postal boxes suitable for fragile items?

Yes. Cardboard postal boxes provide reliable protection for many products. For fragile items, we also offer foam lined boxes, picture frame boxes and other specialist packaging solutions that provide extra protection during transit.

Do you supply postal boxes in bulk?

Yes. We offer bulk pricing across our range of postal boxes and mailing boxes, making them a cost effective option for businesses with ongoing shipping requirements.