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For an online brand, the mailer box is the only physical touchpoint you get — and it arrives after the sale, when the customer is primed to be delighted. A plain brown carton says “shipment”; a right-sized, branded mailer with an inside-printed message says “brand.” In a channel where you can't control the shelf, the doorstep unboxing is your storefront, your first impression, and your most shared marketing asset all at once.
America Custom Boxes manufactures custom mailer boxes engineered for both jobs: surviving the carrier and delighting the customer. We build self-locking corrugated mailers — the roll-end tuck-front style favored by subscription and DTC brands — in E-flute for a smooth print surface or B-flute and double-wall for heavier goods, with edge-crush strength matched to your product weight. Full-color printing inside and out, tear strips for easy opening, and right-sized dimensions that lower dimensional weight all come standard, and with free die and plate setup, none of it carries setup fees.
From a first Shopify order to a national subscription program, our mailers are built for real e-commerce — carrier abuse, return-worthy presentation, and dimensional-weight economics — and backed by free design, free 3D mockups, and free U.S. shipping. Ship safe, unbox premium, and put your brand in every customer's hands.
The self-locking e-commerce standard with a clean front lock.
A tuck-top variant for a slightly different open.
Fast, tape-free assembly for high-volume fulfillment.
Snug protection for books, prints, and flat goods.
Extra strength for heavier or fragile products.
Fitted cradles for a premium, protected reveal.
our mailers lean into it: Curbside-recyclable kraft, cardboard, and corrugated stocks. Fiber-based materials that break down or get reused. Post-consumer recycled board where your specification allows. Low-VOC, eco-safe inks and water-based adhesives. Natural, eco-forward materials with minimal treatment.
Custom mailer boxes are branded corrugated shipping boxes built for e-commerce — typically a self-locking roll-end tuck-front style that folds up without tape. They protect the product in transit and, with inside-and-out printing, turn the doorstep delivery into a branded unboxing experience.
No. Die-cutting and plate setup are free at America Custom Boxes, so custom sizes, die-cut inserts, and inside printing don't carry setup fees.
E-flute (~1.5 mm) is the most popular — rigid, lightweight, and the best surface for high-resolution print, ideal for apparel, cosmetics, and light goods. B-flute (~3 mm) adds crush resistance for heavier items, and double-wall is for heavy or fragile products. We'll recommend the right flute for your product weight.
Yes — and you should. Inside printing rewards the customer at the moment they open the box and drives social sharing. A pattern, thank-you message, or discount code inside is one of the highest-impact, lowest-cost unboxing upgrades.
Carriers bill on dimensional weight — based on box volume, not just actual weight. A mailer right-sized to your product cuts dim weight, reduces void fill, and lowers damage rates, so the customization often pays for itself in shipping savings.
Yes. Corrugated is one of the most recycled materials in the USA. We offer kraft, recycled-content, and recyclable mailers with water-based and soy inks.
Yes. We engineer die-cut corrugated and paperboard inserts, plus molded pulp trays and paper void fill, to immobilize the product and create a premium, protected reveal.
Yes. Self-locking E-flute mailers with inside printing and die-cut inserts are the subscription-box standard — premium, protective, and shareable.
Yes. We can add double tear strips or resealable closures so customers can reuse the same box for returns and exchanges, which improves the post-purchase experience.
Yes. Free design and dieline support plus a free flat and 3D digital mockup are included so you can approve your mailer before printing.
We welcome both small and bulk orders, so Shopify startups and national brands can order affordably, with wholesale price tiers as volume grows.
Standard turnaround is 10–12 business days after proof approval, with expedited options available, and U.S. shipping is free to all 50 states.
