When Should eCommerce Sellers Use Large Letter Postal Boxes Instead of Mailing Bags
Packaging decisions directly affect your postage costs, your product's safety in transit, and the impression your brand makes when it arrives at a customer's door. For eCommerce sellers shipping smaller, flatter items across the UK, the choice between large letter postal boxes and large mailing bags is one that comes up constantly and getting it wrong can quietly drain your margins. Both options serve distinct purposes. Understanding which one fits your product, your postage strategy, and your brand presentation will help you make smarter decisions at scale. This article breaks down the key differences, the practical use cases, and when each packaging type genuinely earns its place in your fulfilment process. Large Letter Postal Boxes A large letter box is a rigid, die-cut cardboard box designed specifically to meet Royal Mail's large letter size criteria. These boxes lie flat and are built to pass through standard letterboxes or automated sorting machines without bein...
