White Mailers Boxes

CustomPostalBoxes.com makes it simple for businesses to design and order custom boxes and affordable packaging online. Get quality custom mailer boxes, shipping boxes and more for any need you might have. With quick turnaround and low minimums, we’re a leading wholesale box manufacturer for a reason. We think outside the box and build packages so good, you won’t be able to contain yourself (pun intended). We offer free die and plates, custom design, a variety of sizes and fast turnarounds for all of our clients.

Dimensions All Custom Sizes & Shapes
Printing CMYK, PMS, No Printing
Paper Stock 10pt to 28pt (60lb to 400lb) Eco-Friendly Kraft, E-flute Corrugated, Bux Board, Cardstock
Quantities 100 – 500,000
Coating Gloss, Matte, Spot UV
Default Process Die Cutting, Gluing, Scoring, Perforation
Options Custom Window Cut Out, Gold/Silver Foiling, Embossing, Raised Ink, PVC Sheet.
Proof Flat View, 3D Mock-up, Physical Sampling (On request)
Turn Around Time 4-6 Business Days, Rush



White Mailing Boxes

Our sturdy white mailing boxes are made from strong cardboard and come in six handy sizes, suiting a wide range of items – our large letterboxes have the traditional brown lining, whilst the other four have a white lining. They have a clean and presentable finish that will enhance the look of your packages, and we can customize them with your company name if desired.
Choose from the two flat boxes that fit Royal Mail large letter size and 4 classed as small parcel. Once assembled, our flat-packed “pizza style” postal boxes have triple thickness sides with a convenient self-locking feature, so there’s no need for tapes or glue.
Packing and posting choices have been made even more exciting with our white mailing boxes! Like all our mailing boxes, these white cardboard postal boxes are made from strong and sturdy material designed to provide toughness and durability. They have two special features: triple thickness sides and a self-locking feature. One of the sizes also has an attractive white lining.
When assembled, the triple-thickness formed by the sides of our white shipping boxes adds useful extra rigidity in the post. You can close the box neatly and firmly with the tuck-in flaps, only using packing tape if you require a more secure seal. The surface is good for sticking on a label or using a marker pen.
You can save money on postage too with these white mailing boxes. Our LGB1 postal carton can be sent as a Large Letter with Royal Mail, whereas the other 4 sizes can all be sent as a Small Parcel.
Supplied flat in packs of 25, our white boxes for mailing are convenient to store and simple to assemble. Choose from 5 different sizes, perfect for posting many different items, including fragile ones.
Because of their strength and versatility, our white mailing boxes provide an ideal and flexible solution for a wide variety of packing and posting needs.


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