Postal Boxes
Postal boxes are corrugated mailing boxes for e-commerce orders, small parcels, samples, documents, gifts, and retail products. Daipak supplies custom postal boxes in kraft, white, printed, and made-to-size options for clean packing and safer delivery.
Need Custom Postal Boxes?
Tell us your product size, box dimensions, board requirement, printing needs, and order quantity. Daipak can recommend suitable postal box size, flute type, structure, and packing solution.
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Postal Boxes
Postal boxes are foldable corrugated boxes designed for mailing, courier delivery, e-commerce fulfillment, and small product shipment. They are supplied flat, easy to assemble, and can be customized by size, board grade, color, printing, and inner packing structure.
- Suitable for e-commerce orders, samples, accessories, cosmetics, books, documents, and small products
- Available in kraft, white, black, colored, or custom printed finish
- Custom length, width, height, flute type, board grade, and box structure
- Optional logo printing, full-color design, label area, insert, divider, handle, tear strip, or zipper opening
- Supplied flat to save storage space and shipping cost
- Suitable for manual packing, warehouse fulfillment, courier delivery, and export shipment
Corrugated Postal Boxes for Small Parcel Shipping
Postal boxes help protect small products during mailing while keeping the package neat, compact, and easy to handle. They are widely used by e-commerce sellers, warehouses, retail brands, and packaging distributors.
Easy Fold Assembly
Die-cut crease lines make the box easy to fold and close during daily packing work.
Corrugated Protection
Fluted corrugated board helps reduce compression, bending, and handling damage during delivery.
Clean Mailing Look
Suitable for e-commerce parcels, sample kits, gift boxes, and retail-ready shipment packaging.
Custom Size & Printing
Size, board grade, color, logo printing, inserts, and opening structure can be customized.
Postal Box Structure Details
Postal boxes are usually made from die-cut corrugated board. The folding lines, locking flaps, side panels, and board grade all affect packing speed, box strength, and final presentation.
Tuck-In Postal Box Structure
A tuck-in postal box uses folding panels and front locking flaps to create a clean, secure mailing box. It is easy to assemble, suitable for daily packing work, and commonly used for e-commerce shipping, samples, gifts, and small parcel delivery.
Side Locking Flaps
Side flaps help close the box more firmly and reduce product exposure during handling, mailing, and courier delivery.
Die-Cut Crease Lines
Accurate die-cutting and crease lines make postal boxes easier to fold, faster to pack, and more consistent in finished shape.
Postal Box Specifications
The following specifications can be adjusted according to product size, protection requirements, packing method, and order quantity.
Common Postal Box Options
Box size, board grade, flute type, structure, and printing options can be adjusted according to product dimensions, packing method, and protection requirement.
Example Postal Box Size References
The following sizes are only common references. Final postal box size should be based on product length, width, height, weight, cushioning space, and packing method.
| Item No. | Material | Flute | Inner Size L × W × H | Color | Recommended Use |
|---|---|---|---|---|---|
| PB-KR-01 | Corrugated Board | E Flute | 150 × 100 × 50 mm | Kraft | Jewelry, accessories, small parts |
| PB-KR-02 | Corrugated Board | E / B Flute | 200 × 150 × 60 mm | Kraft / White | Cosmetics, electronics accessories, samples |
| PB-KR-03 | Corrugated Board | B Flute | 250 × 200 × 80 mm | Kraft / White | Small e-commerce parcels and gift items |
| PB-KR-04 | Corrugated Board | B Flute | 300 × 220 × 100 mm | Kraft | Books, apparel accessories, retail products |
| PB-KR-05 | Corrugated Board | B / C Flute | 350 × 250 × 120 mm | Kraft / Printed | Subscription boxes, sample kits, promotional packages |
| PB-CU-06 | Custom Board | Custom | Custom L × W × H | Custom | OEM / ODM postal box packaging |
Need a different size? Send us your product dimensions, weight, photos, and packing method. We can help recommend a suitable postal box size, flute type, and structure.
How to Choose the Right Postal Boxes
The right postal box depends on your product size, weight, delivery method, branding requirement, and packing process. For fragile or premium products, inner inserts or extra cushioning may also be needed.
Not sure which postal box fits your product? Send us your product size, weight, photos, packing method, and printing requirement. We can help recommend a suitable box size, board grade, flute type, and structure.
Ask for Postal Box RecommendationCommon Applications
Postal boxes are widely used for mailing, e-commerce shipment, product samples, retail packaging, and small parcel delivery.
E-commerce Shipping
For online orders, accessories, cosmetics, books, small electronics, and daily parcel fulfillment.
Courier & Mailing Parcels
For products shipped through courier networks, postal services, and small parcel delivery channels.
Gift & Subscription Boxes
For branded gift packaging, sample kits, subscription boxes, and promotional product packages.
Document & Sample Delivery
For product samples, catalogs, documents, flat goods, and lightweight business shipments.
Retail Product Packaging
For products that need a clean, protective, and shipping-ready corrugated packaging solution.
Warehouse Fulfillment
For daily packing lines, stock preparation, manual folding, and batch order dispatch.
Related Corrugated Box Products
You can also choose other corrugated box styles according to product size, shipping method, opening structure, and branding requirement.
Zipper Corrugated Boxes
Easy-open corrugated boxes with zipper or tear-strip structure for better customer unboxing experience.
Moving Boxes
Strong corrugated moving boxes for household goods, storage, relocation, and transport packing.
Printed Corrugated Boxes
Custom printed corrugated boxes for brand packaging, product presentation, and shipping display.
Custom Corrugated Boxes
Custom corrugated boxes with adjustable size, board grade, structure, thickness, and logo printing.
Postal Boxes FAQ
Common questions about postal boxes, including size selection, board grade, printing options, structure, and quotation details.
What are postal boxes used for?
Postal boxes are used for mailing, courier delivery, e-commerce shipping, samples, documents, gifts, accessories, cosmetics, books, and other small products.
Can postal boxes be customized by size?
Yes. Postal boxes can be customized by length, width, height, board grade, flute type, structure, printing, and packing method.
Can you print our logo on postal boxes?
Yes. We can provide logo printing, full-color printing, product text, QR code, barcode, shipping marks, and custom brand design according to your artwork.
What board or flute should I choose?
E flute is often used for smaller and cleaner mailer boxes. B flute or stronger board is better for heavier products or larger parcels. The final choice depends on product size, weight, and delivery method.
Are postal boxes supplied flat?
Yes. Postal boxes are usually supplied flat packed to save storage space and shipping volume. They can be folded during packing.
Can postal boxes replace courier bags?
Postal boxes are better when the product needs stronger shape protection, better presentation, or extra space for inserts. Courier bags are better for flexible, lightweight, and less fragile products.
Can you add inserts or dividers inside the postal box?
Yes. Corrugated inserts, paper dividers, foam inserts, and other inner protection parts can be added according to product shape and protection needs.
What information is needed for a quotation?
Please send product size, product weight, box size, board requirement, printing design, quantity, shipping destination, and packing method. Photos or drawings are also helpful.
Request a Quote for Custom Postal Boxes
Tell us your product size, weight, packing method, printing requirement, and order quantity. We can help recommend a suitable postal box size, board grade, flute type, and box structure.
Not sure about the exact box size or board grade? Send us your product size, product weight, packing method, and printing requirement. Our team can suggest a suitable postal box size, flute type, board grade, and structure.
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GET A PACKAGING QUOTE
Need Postal Boxes for Your Packaging Project?
Send us your product dimensions, weight, packing method, printing requirement, and order quantity. We can help recommend the right postal box size, board grade, flute type, and structure.