Custom Corrugated Mailer Boxes

Custom corrugated mailer boxes pair tested board strength with tape-free assembly and full-colour branding, so products arrive safe and on-brand. Shipping damage costs sales and trust, and the corrugated wall is what stands between your product and a rough courier network. At Apexio Packaging, we make custom corrugated mailer boxes in the USA in E-flute, B-flute and double-wall builds. With zero MOQ, free design, a free 3D mockup and free US shipping, you can order one sample or a full run at the same tested quality. Get your free quote and free 3D design proof today – email sales@apexiopackaging.com or call +1 (855) 466-6990.

What Are Custom Corrugated Mailer Boxes?

A corrugated mailer box is a die-cut shipping box with a fluted inner layer that cushions the product in transit. The wavy flute between two liners gives corrugated its strength-to-weight advantage, absorbing shocks and resisting crushing. The box folds flat, locks without tape and carries print on both faces, which is why it is the standard for e-commerce shipping.

Which Brands Use Corrugated Mailers

Corrugated mailers suit any brand shipping products that need protection, from light retail to heavy kits. E-commerce and subscription brands use them daily, apparel and cosmetics labels protect goods in transit, and electronics or multi-item kits use heavier double-wall builds. Eco-minded brands often choose kraft liners, as in our custom kraft mailer boxes.

Which Corrugated Mailer Style Fits Your Product?

The right corrugated style depends on weight, closure and how the box opens.

Mailer style	Best for	Why it works
Roll-end tuck front (RETF)	E-commerce and subscriptions	Double-wall front, tape-free close
Self-locking mailer	High-volume shipping	Locks flat without glue
Front-tuck mailer	Light retail items	Simple, economical
Die-cut mailer	Branded gifting	Custom shape and print
Full-overlap shipper	Heavy or fragile goods	Extra bottom strength

Most stores start with a roll-end tuck front, while heavy goods use a full-overlap base. For a bold dark finish, compare our custom black mailer boxes.

Corrugated Mailer Box Sizes

Corrugated mailers are cut to any product, and the chart shows common shipping sizes in inches.

Box size (L x W x H)	Fits	Common use
6 x 4 x 2 in	Small goods, cosmetics	DTC orders
8 x 6 x 2 in	Apparel, books	Fashion and print
9 x 6 x 3 in	Multi-item boxes	Subscriptions
10 x 8 x 3 in	Apparel sets, kits	Retail and PR
12 x 9 x 4 in	Bulky or multi-product	Larger shipments
14 x 10 x 4 in	Heavy multi-item kits	Wholesale bundles

We size each corrugated mailer to the product so it sits snug, which stops movement in transit and keeps dimensional (DIM) weight low. Fully bespoke dimensions are cut on request.

Board, Flute and ECT Strength

Board and flute are chosen by product weight, stacking load and shipping distance.

Board / flute	Thickness	Typical ECT	Best for
E-flute	~1.5 mm (1/16 in)	~32 ECT	Light retail items up to 2 lb
B-flute	~3 mm (1/8 in)	~40-44 ECT	Standard e-commerce, 2-5 lb
C-flute	~4 mm (3/16 in)	~44 ECT	Larger, slightly heavier goods
Double-wall (BC)	~6-7 mm	~48-51 ECT	Heavy or multi-item kits up to 15 lb

Edge Crush Test (ECT) measures stacking strength, so heavier products and longer routes call for a higher ECT. Kraft or white liners are available, along with FSC-certified stock. We do not build mailers from thin greyboard or cardstock, because only corrugated protects in transit.

Printing Methods: Digital, Offset and Flexo

We print corrugated mailers by three methods, chosen by run size and artwork.

Printing method	Best for	Main strength
Digital	Short runs and samples	No plates, fast and full colour
Offset (litho-lam)	Photographic, premium retail	Sharpest detail on a bonded liner
Flexographic	Large kraft/corrugated runs	Best value, strong spot colour

Digital suits short runs, offset litho-lamination gives photographic quality, and flexo prints directly onto corrugated for the best value at volume.

Colour system	Use it for	Note
CMYK	Full-colour art, gradients, photos	Standard four-colour process print
PMS (Pantone)	Exact logo and brand colours	Identical shade on every reprint
RGB	On-screen design and previews	Convert to CMYK before printing

Artwork is built in CMYK, with Pantone (PMS) matching for exact brand colours and RGB reserved for screens. Our CMYK, PMS and RGB colour guide explains it in plain terms.

Finishes and Protective Coatings

Finishes add durability and shelf appeal to a corrugated mailer.

Finish	Effect	Best for
Matte / gloss lamination	Base surface feel and scuff resistance	Printed retail mailers
Water-based aqueous coating	Light protection, recyclable	Kraft and eco builds
Spot UV	Glossy accent	Logos and highlights
Foil / embossing	Premium accent	Gifting and PR kits

Lamination protects print from transit scuffs, while a water-based coating keeps kraft builds recyclable. Foil and embossing add a premium accent where needed. Ready to build yours? Get a free quote and a free 3D proof now – email sales@apexiopackaging.com or call +1 (855) 466-6990.

Inserts and Add-Ons

Inserts hold products in place and complete a protected unboxing.

Insert / add-on	What it does	Best for
Corrugated dividers / partitions	Separates multiple items	Multi-product kits
Die-cut foam (EPE / EVA)	Firm shock protection	Fragile and glass goods
Molded pulp tray	Recyclable fitted hold	Eco-conscious brands
Tear-strip opening	Easy, tool-free open	Subscription unboxing

Dividers organise multi-item shipments, foam protects fragile goods, and a tear-strip makes opening easy. For small luxury goods, see our custom jewelry mailer boxes.

Built for E-commerce Shipping

Corrugated mailers are engineered for the parcel network, protecting goods while cutting waste. A right-sized corrugated mailer protects against drops and stacking, removes rattle and lowers dimensional weight, so you cut both damage claims and shipping cost. On arrival the printed box lifts the unboxing. Explore every structure on our custom mailer boxes hub.

Corrugated Mailers Across the USA

We produce and ship corrugated mailers free to brands nationwide. Apexio Packaging serves brands in California, Texas, Florida, New York and Illinois, plus Los Angeles, Chicago, Miami and Denver, and ships free to every state. A Florida electronics brand may need double-wall boxes with foam, while an apparel label may choose printed B-flute.

Wholesale, Zero MOQ and Lead Time

Ordering corrugated mailers stays simple, with zero MOQ, free design and free US shipping. Order a single sample or a large wholesale run. Standard production runs about 5-7 business days after proof approval, with a RUSH option. For premium reusable builds, compare our custom rigid boxes. Order now with zero MOQ and free US shipping – get your free quote today.

Our Quality Review Before Production

We check every corrugated mailer for board strength, fit, print and fold before it ships. We confirm flute alignment, ECT rating, print registration and score strength, and for heavier or fragile shipments we validate the build against ASTM D4169 distribution testing. Corrugated is tough and recyclable, but if you need a rigid gift box we will say so honestly.

Order Custom Corrugated Mailer Boxes Today

Protect your products and brand every delivery. Start with zero risk: no minimums, free design, a free 3D mockup and free US shipping. Send us your product and weight, and we turn it into custom corrugated mailer boxes tested for transit. Get your free quote now – email sales@apexiopackaging.com or call +1 (855) 466-6990.