Shipping Mailer Box

Ship with confidence using our custom shipping mailer boxes — engineered for carrier transit, printed with your brand, and sized to your products. Built from robust corrugated board rated for the demands of courier and freight networks, these boxes protect contents from dispatch to delivery without compromise.

• Transit-grade corrugated board construction
• Reinforced self-locking tuck-top closure
• Full-colour custom branding available
• Custom sizing for any product dimension
• Wholesale pricing with no minimum order

For lighter postal-rate shipments, see our postage mailer boxes sized for postal service thresholds.

Built for What Shipping Actually Looks Like

Packages shipped through carrier networks are conveyor-sorted, drop-tested, stacked, and handled by multiple people before reaching your customer. The average parcel changes hands five to seven times in transit. Your shipping mailer box needs to survive all of it.

At The Mailer Boxes, we manufacture shipping mailer boxes to a higher structural specification than standard retail packaging. We choose board grades based on your product weight and the carrier network you’re using — local courier, national parcel, or international freight — because the demands are different and the packaging should be too.

What Makes a Box Shipping-Ready

Board Grade Matched to Product Weight

We specify board grade based on your product’s weight and the stacking forces your box will experience in transit. Lightweight products ship efficiently in single-wall B-flute. Heavier products need C-flute or double-wall for stacking strength. We won’t let you over-spec (and pay more than necessary) or under-spec (and risk damage).

Closure That Holds Under Pressure

A self-locking tuck-top that pops open in transit is a packaging failure. Our shipping mailer box closures are engineered with sufficient board stiffness and tuck geometry to hold under the pressure of carrier handling without requiring tape. For extra security, we offer closure designs that self-lock at two points.

Printing That Survives Shipping

Exterior printing on a shipping mailer box faces scuffing, moisture, and contact with carrier belts and equipment. We apply laminate coatings where appropriate to protect print quality throughout the transit chain, so your branding arrives looking as good as it left.

Frequently Asked Questions

What is the difference between a shipping box and a mailer box?

The terms overlap significantly. In common usage, a mailer box is a self-closing box (typically tuck-top) used for ecommerce shipments. A shipping box may also refer to regular slotted containers (RSC) that require tape to close. Our shipping mailer boxes combine the self-closing convenience of a mailer with the structural strength needed for carrier transit.

Can I use shipping mailer boxes for international shipments?

Yes. For international shipping, we recommend at minimum B-flute corrugated. Longer transit times and multiple carrier transfers increase the cumulative handling impact your box experiences. Share your destination countries and we’ll advise on appropriate specification.

Packaging Engineered for the Journey, Not Just the Shelf

Your product’s journey starts the moment you close the box. Make sure it’s protected for every step. Request a quote for custom shipping mailer boxes today.