rectangular letterbox friendly boxes
Browse our range of Royal Mail Large Letter Friendly, perfect to fit the letterbox limit for cost effective posting in style!
These boxes are perfect for small studs, dangle earring, or brooches. Can even be used for USB sticks. These boxes are multi-purpose so you can be inventive! For our full gift box collection, see our gift boxes page.
Please note that all of our box dimensions on our website are ‘internal’ measurements.
We recommend that you order a sample box so you can check that the overall external dimensions of your box and the mailer meet the Royal Mail size guidelines.
Rectangular Letterbox Boxes