Select dimensions in cm, mm, inches, ml, or oz and more — whatever fits your product.
Custom mailer boxes combine a folding corrugated structure with an attached lid to pack, ship, and present branded orders. A carefully planned fit helps limit movement, while custom printing carries your identity from the outer panels to the opening experience. At Custom Boxes Inc., your product dimensions, packed weight, and fulfillment routine guide the box size, board, inserts, and artwork. Get free design assistance and a production schedule confirmed around your order.
Select dimensions in cm, mm, inches, ml, or oz and more — whatever fits your product.
Choose the Stock, printing type, and enter your order quantity.
Upload your ready artwork — or just write “Need Design” and we'll handle it.
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After You Approve the Quote — Here's What Happens Next
A branded shipment has two jobs: carry the order through handling and present it clearly when opened. Custom corrugated mailer boxes bring those jobs together in a foldable package with an integrated lid. The structure, contents, and final shipping seal need to work as one pack.
Start with what you send and how your team packs it. A folded sweatshirt needs different space from a subscription assortment or a kit containing several small cartons. We use those details to recommend a configuration that supports your fulfillment process and the customer's first look inside.
A common mailer construction uses a front tuck panel, side dust flaps, and folded walls. Depending on the design, locking tabs help retain the assembled shape and keep the lid engaged. Share how often the box will be opened, whether staff pack by hand, and where the shipping label will sit. Assembly locks do not automatically provide a suitable parcel seal. Plan shipping tape or another appropriate sealing method around the selected closure and carrier requirements. Dust flaps cover openings; they do not make the package airtight or waterproof. A tamper-evident seal also requires a specifically chosen solution.
Measure the complete order, including its retail cartons, inserts, wrapping, and any cushioning. Give us length, width, depth, units, and packed weight. Usable internal dimensions must allow the contents to sit correctly without forcing the lid upward or interfering with the tuck panels. Internal measurements describe product space; the sealed outer dimensions describe the parcel. Folded walls and board thickness affect the difference. Carriers may use dimensional weight in their billing, so compare proposed sizes using the finished external measurements and gross weight. Removing unnecessary space can be useful, but protection clearance still belongs in the design.
Board selection starts with weight, fragility, box dimensions, and anticipated handling. Flute profile, liner papers, and board grade all contribute to performance. A compact apparel order and a heavier product kit can require different constructions even when their outside sizes look similar. Folded side panels can reinforce a mailer's structure, but they are different from double-wall corrugated board. Avoid choosing by thickness or appearance alone. We help match the board and construction to your application, then identify where a filled sample or appropriate transport evaluation would help verify the choice before a larger order.
Custom mailer boxes with inserts can organize an assortment and help limit contact between products. Paperboard partitions can divide light components; corrugated inserts can locate cartons or support selected heavier items. The shape should allow easy removal without creating pressure on vulnerable edges. Plan the opening sequence around the real contents. A welcome card might sit above an apparel order, while an accessory kit may need separate compartments. Tissue can improve presentation, but its decorative role does not establish cushioning performance. For changing subscription assortments, check the layout against each planned combination.
Custom printed mailer boxes need room for both branding and dispatch information. Reserve an appropriate flat area for the shipping label, clear of seams, edges, and closures. Keep essential graphics away from tape paths and surfaces likely to be covered during fulfillment. Inside printing can carry a welcome message, setup steps, a reorder link, or a product guide. Position the message where it remains visible after the contents are placed. Free design assistance helps translate your supplied branding into the approved dieline, checking panel orientation, folds, bleed, and safe areas before production.
Brown kraft liners suit artwork that works with the paper's natural background. White liners provide a lighter base for detailed illustrations and color-sensitive designs. Ink appearance depends on the chosen surface and process, so review how the design will reproduce on the actual board. Discuss inside and outside printing, ink coverage, and any special finish together. Where white ink, coatings, or decorative effects are appropriate, availability depends on the selected production route. If recycled content or recyclability matters to your brief, request specifications for the complete configuration; paper color alone does not establish an environmental claim.
A mailer may serve as the outer shipping box when the filled configuration suits the product and delivery conditions. Fragile goods, sensitive surfaces, or a presentation box that must arrive unmarked may need additional protection or an outer carton. A digital proof checks artwork placement, while a physical sample helps assess fit, closure, and packing. Transport testing evaluates the product and packaging together against relevant handling conditions. Discuss sample availability, costs, and any testing requirements before approval. Neither an attractive mockup nor a named flute profile establishes shipping performance on its own.
Mailer blanks can be supplied flat for storage and assembled as orders are packed. Keep them dry and protected from crushing, and trial the folding sequence with your packing team. Check that inserts load easily, flaps close consistently, and labels remain accessible. If customers may return products, plan how they will repack and reseal the box. Reuse depends on its condition after the first journey. Clear instructions can tell customers where components belong and how to replace the shipping label without covering the new address with old routing information.
Custom mailer box pricing depends on size, board, print coverage, artwork versions, inserts, finishes, and quantity. Compare quotes using the same specifications. Selected corrugated orders may start at 50 boxes; the minimum for your configuration is confirmed with the quote. Share your required arrival date and destination ZIP code early. Corrugated production follows a project-specific schedule, with transit time considered separately. Finalize structure, payment, and artwork approval before relying on the production timeline. Planning those decisions together helps keep a launch or restock from waiting on unresolved packaging details.
Send Custom Boxes Inc. your product dimensions, packed weight, quantity, branding files, and delivery deadline. Unsure about the structure or insert? Describe the order you ship, and our team will help develop the specification. Complete the quote form for pricing and design guidance, or contact us directly.
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Answers to Help You Order with Confidence
It can when the board, structure, internal protection, and shipping seal suit the packed product and delivery conditions. Fragile contents or a printed surface that must remain unmarked may need additional protection or an outer carton. Share the contents and shipping method so those requirements can guide the configuration.
Locking tabs help keep the box assembled, but they do not automatically replace a suitable parcel seal. Tape or another appropriate closure should be chosen for the box design and carrier requirements. Tell us how your team seals orders so we can account for that step in the structure and artwork.
Yes, share the complete packed contents, dimensions, weight, and any inserts or wrapping. Our team can guide the usable internal size and provide free design assistance using your branding and the approved dieline. Review the digital artwork proof before production, and discuss a physical sample separately if fit or packing needs checking.
Inside and outside printing can be specified, with options confirmed for the selected board and production process. Kraft and white liners reproduce artwork differently, so include your brand colors, coverage, and intended panel placement in the brief. We can help plan a readable layout that leaves room for shipping labels and sealing.
Selected corrugated configurations may start at 50 boxes, with the exact minimum confirmed in your quote. Production timing depends on the approved structure, artwork, quantity, and finishing requirements; corrugated orders receive a separately confirmed schedule. Provide your destination ZIP code and required arrival date so production and transit can be planned together.
Custom Boxes Inc is a leading manufacturer and supplier of custom packaging boxes tailored for every product and industry. From startups to global brands, we empower businesses across the USA with cost-effective, high-quality, fully personalized packaging solutions — crafted with precision, delivered with speed. Whether you need eco-friendly cardboard boxes, rigid luxury boxes, or branded retail-ready display packaging — we've got you covered with endless customization options, low MOQs, and lightning-fast turnarounds.
