Letterbox Sized Packs & Mailers | eCommerce Packaging | Smurfit Kappa
Packaging - eCommerce

Letterbox Sized Packs & Mailers

Letterbox sized postal packs/mailers are designed to help you achieve eCommerce deliveries without the need for recipients to be present.

Letterbox sized postal packs are supplied flat making them easy to store. They are quick and easy to assemble due to its hinged lid design with simple tuck-in flaps. As letterbox sized postal packs are self-interlocking only a security seal is required to safeguard the contents during the final mile delivery.

Our Letterbox sized postal are FSC® certified, 100% recyclable and made from a renewable resource. These boxes are a great option for consumers as they can be recycled in the regular kerbside cardboard recycling system.

Our Letterbox sized postal packs are manufactured bespoke to your requirements and utilising various print finishes, packs can be printed on both the inside and the outside, to include handling instructions, product/sustainability information or branding.


We offer an integrated tailored service from initial design to testing

Smurfit Kappa offers an integrated tailored service from initial design to ISTA 6 Testing to assist vendors in getting their products to market. 

Our team of 700 designers will work with you to develop a pack to meet your products need and using our unique innovation tools, we will calculate the required pack strength to meet your supply chain needs.

At our ISTA certified lab we then rigorously test paper, board and pack performance throughout the supply chain. Our expert’s stress-test packaging in all different transport simulations and climates, and these leading logistics insights ensure your products are well protected all the way to their final destination.

Smurfit Kappa’s accredited ISTA laboratory offers Frustration Free Packaging (FFP), Ships-in-Own-Container (SIOC) or Prep-Free Packaging (PFP) testing to ensure the reduction of damages.

Letterbox-Sized-Postal-Mailers 

Frequently Asked Questions

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