Envelope Mailers

Discover our range of durable, recyclable cardboard envelope mailers designed to protect documents, booklets, posters, and lightweight merchandise during shipping. Available in multiple sizes, from A5/C5 up to A2/C2, our mailers are ideal for businesses, offices, and online sellers looking for secure, letterbox-friendly packaging.

Watch our quick demonstration showing how our eco-friendly envelope mailers protect documents and merchandise across all sizes, from A5 to A2: Watch the video.

Frequently Asked Questions

Why would you choose this product?

  • Wide size range: Flat-packed or expandable to suit different document and merchandise sizes.

  • Durable and crush-resistant: Provides reliable protection during transit.

  • Eco-friendly: Made from 100% recyclable cardboard.

  • Secure peel & seal closure: Quick and tamper-proof.

  • Versatile: Perfect for documents, certificates, posters, promotional items, and light merchandise.

What are some of the features of this product?

Our cost-effective envelope mailers are designed to be expandable up to 40mm, making them a perfect packaging solution for a range of items including books, brochures, calendars, artwork, paperwork, textiles, documents, computer games etc. 

Our mailers are designed to provide extra protection that normal envelopes don’t provide and are designed to fit through most letterboxes. Find out more on Royal Mail PiP Packaging here. 

A permanent self-adhesive strip creates a tamper proof seal and there is and easy-open tear strip to help customers to access goods quickly. This also means packing is quick and easy with no need for extra void fill. The compact design also reduces postage costs compared with using larger boxes. 

Why choose us for this Packaging?

  • Manufactured by us, with fast dispatch.

  • Sustainable, fully recyclable materials.

  • Designed to fit standard ISO sizes, including A5, C5, A4, C4, A3, C3, A2, and C2.

  • Expandable designs for thicker or bulkier shipments.