Extra rigidity for anything that must not bend

A cardboard envelope is a flat mailer made from rigid cardboard rather than standard paper stock, designed to protect flat items, documents, photographs, certificates, artwork prints, and similar products, from bending during transit. It offers noticeably more rigidity than a paper envelope while staying lighter and cheaper than a full box.

Why Choose Cardboard Over Paper

Standard paper envelopes offer little resistance to bending, which risks damage to anything that must arrive flat. A cardboard envelope's stiffer construction holds its shape through handling and sorting, making it a sensible choice for anything where a crease or bend would ruin the contents.

Where Cardboard Envelopes Are Used

This style is common for mailing photographs, certificates, art prints, greetings cards, and flat retail items like phone cases or small accessories, wherever protection matters more than the cost saving of a standard paper envelope.

Materials

Cardboard envelopes are typically made from single-wall corrugated or thick, rigid paperboard, in a range of thicknesses depending on how much protection the contents need.

Order Sizes We Support

Custom cardboard envelopes are available from around 100 to 250 units, suiting businesses regularly mailing flat items that need protection.

Average Prices

As a general guide, cardboard envelopes typically cost between £0.15 and £0.60 per unit, depending on size, board thickness, print colours and quantity ordered.

Sustainability

Cardboard used for these envelopes is widely recyclable, and using a correctly sized cardboard envelope instead of a full box for flat items also reduces material use overall.

Getting Started

Tell us what you are mailing and its dimensions, and we will suggest a suitable envelope size and board thickness. We build a proof before production and UK-wide delivery.