Letterbox shipping mailer boxes sized to fit through the door, so parcels are not missed. Slim kraft boxes for books and small goods, from 50.
- Custom product-fit dimensions
- Minimum order: 50 units
- Free dieline and 3D mockup
Shipping Mailer Boxes
Letterbox Shipping Mailer Boxes
Fits through the door
A letterbox mailer is made thin enough to fit through a home letterbox. The courier does not need to knock or leave a card. Your customer gets the parcel, even when they are out.
That means fewer missed deliveries and fewer "where is my order?" emails.
Built to a size limit
Each courier has its own size rules. We build the box to stay under your target height, length and width. Even a few millimetres matter, so we check the outside size, not just the inside.
Good for books and small items
Books, socks, phone cases, art prints and beauty samples all fit well. The box is slim but stiff enough to stop bending.
Quick to seal
Most letterbox mailers close with a peel-and-seal strip. Add a tear strip too, and the customer can open it with one pull.
Order today
Send your item size, the postage size you want to hit and your order size. We start at 50 boxes with a free dieline and 3D mockup.
Letterbox Shipping Mailer Boxes specifications
- Structure
- Slim crash lock letterbox mailer
- Material options
- E-flute kraft corrugated
- Dimensions
- Custom size built around your product
- Minimum order
- 50 units
Questions about Letterbox Shipping Mailer Boxes
Compare more shipping mailer boxes, explore the full custom mailer boxes range, design yours in the Box Builder or request a packaging quote.
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