custom postage boxes

custom postage boxes are postal cartons made to your size and printed with your branding so products travel safely and arrive looking professional. Custom Postal Boxes manufactures custom postage boxes in Wolverhampton for UK online sellers who want the right fit for Royal Mail size bands, strong board and print that turns a delivery into a brand moment.

Why sellers choose custom postage boxes

A stock box that is too large wastes board, needs extra void fill and can push a parcel into a higher postage band. A box made to your product avoids all three problems. The product sits snugly, the outer size stays as small as the contents allow, and the printed exterior tells the customer whose parcel has arrived before the tape is cut. For repeat orders, that recognition builds trust in a way a plain carton cannot.

Sizing starts with Royal Mail pricing in proportion. Large Letter covers slim items up to 353 mm long, 250 mm wide and 25 mm thick, Small Parcel covers items up to 450 mm by 350 mm by 160 mm, and Medium Parcel covers larger orders. Checking your packed size and weight against the Royal Mail prices page at the design stage keeps postage predictable as your range grows.

Popular formats for online orders

Mailer style boxes with a hinged lid suit clothing, cosmetics, gifts and subscription products where presentation matters. Simple postal cartons suit books, parts and everyday goods where strength matters most. Slim letterbox postal boxes fit through a standard letterbox so the customer does not need to be at home, and our A5 postal boxes suit documents, prints and small flat items.

Matching board strength to the product

Light and resilient goods travel well in a single wall corrugated box, while heavier, fragile or stacked orders suit a stronger grade. Tell the team what the box must carry and how it will be posted, and the specification can match strength to the real load rather than guessing.

Branding options on custom postage boxes

Printing can cover the outside, the inside or both. Many sellers keep the outside calm with a logo and web address, then print a message, care guidance or a review request inside the lid where the customer sees it on opening. Full colour print carries photography and illustration, while a single colour print on kraft board gives a simple and honest look that suits handmade and refill brands. Our printed postal boxes show the print options in more detail.

Plain strength still matters for some ranges, and our cardboard postal boxes can be supplied printed or unprinted to the same sizes. Whichever route you choose, boxes are supplied flat to save storage space and fold together quickly at the packing bench, with self sealing strips available on mailer formats to remove the need for tape.

Packing well inside a custom box

A good fit does most of the protective work. Add tissue, shredded paper or a shaped insert only where the product needs cushioning or separation, and place the delivery note where it will not mark the product. Seal the box fully, place the label on the largest flat panel and keep it away from seams and the opening edge.

Ordering and responsibilities

Ordering is quote based, so pricing depends on size, material and quantity, and the team provides free design support to set artwork on the correct template. Low minimum order quantities suit new shops and seasonal ranges, and free UK delivery is included. Sellers who place packaging on the UK market should also read the GOV.UK guidance on packaging producer responsibilities. Share your product sizes and posting method via our contact page for a quote and we will recommend a format that protects the product and the postage budget together.

FAQs about custom postage boxes

What is the difference between a custom box and a stock box?

A stock box comes in fixed sizes, while a custom box is made to your product dimensions and printed with your branding. The closer fit reduces void fill, can lower the postage band and presents your brand on arrival.

Which Royal Mail band will my box fall into?

It depends on the packed outer size and weight. Slim items can travel as Large Letter, most everyday orders travel as Small Parcel, and larger orders travel as Medium Parcel. Measuring the packed box before ordering keeps postage accurate.

Can postage boxes be printed inside as well as outside?

Yes. Inside print is popular for messages, care guidance and review requests that the customer sees on opening. Outside print carries your logo and identity through the delivery network.

Do custom postage boxes need tape?

Mailer formats with self sealing strips close without tape and reopen with a tear strip. Standard cartons are usually taped. Both styles are supplied flat and assemble quickly at the packing bench.

What is the minimum order for custom postage boxes?

Minimum order quantities are low, which suits new and growing shops. Pricing depends on size, material and quantity, so request a quote with your product dimensions and target postage band.