Custom Mailer Boxes

A mailer box is a one-piece corrugated box with a tuck-in lid and side flaps that lock without tape. It works as the shipping carton and the gift box at the same time, which is why it has become the standard package for online brands. Packwhole makes custom mailer boxes to your exact dimensions, prints them with your artwork on the outside, the inside or both, and ships them flat so they take little room in your stockroom.

This page explains the mailer box styles we produce, the board and print options, how sizing and pricing work, and how to order printed mailers with free design help and a digital proof.

What Makes a Mailer Box Different From a Regular Shipping Carton

A standard shipping carton opens from the top with four flaps and needs tape on both ends. A mailer box opens like a book: the lid folds over and tucks into the front, and dust flaps on the sides keep the contents covered. The result is a cleaner reveal, a stronger edge and faster packing.

• Built-in closure: the front tuck locks the lid, so many orders need only one strip of tape or a seal sticker.
• Self-contained presentation: the inside of the lid is the first thing a customer sees, which makes it ideal for a printed message.
• Rigid walls: double-thick side walls on many mailer styles resist crushing better than a thin folding carton.
• Flat storage: each box ships and stores flat and folds up in seconds at the packing table.

If you are still choosing between the two formats, our guide on mailer box vs shipping box compares them side by side.

Custom Mailer Boxes Styles We Make

Most brands start with the classic roll end tuck front mailer, but several variations suit different products.

The roll end tuck front style is the one most people mean when they search for a mailer box. It folds without glue and holds its shape after it is opened, so customers often keep it.

Board Grades and Strength

The right board depends on what you ship and how far it travels. Our team suggests a grade once you share your product weight.

• E-flute corrugated: thin and smooth, prints sharply, suits most products under a few pounds.
• B-flute corrugated: thicker walls for heavier or more fragile items.
• Kraft or white board: natural brown for an earthy look, or bright white for vivid color.

For a closer look at flute sizes, read E-flute vs B-flute.

Printing and Finishing Options for Printed Mailer Boxes

Printed mailer boxes can carry anything from a single-color logo to full-coverage artwork.

1. Outside print: logo, brand colors, patterns and social handles on the lid and sides.
2. Inside print: a thank-you note, care instructions or a reveal pattern under the lid.
3. Finishes: matte or gloss lamination, spot UV, and foil accents for a premium touch.
4. Plain with a label: an unprinted mailer with a branded sticker keeps cost down for very small runs.

Personalized mailer boxes do not have to be complex. One strong color inside the lid often makes a bigger impression than a crowded exterior.

Sizing Your Mailer Box

Every Packwhole mailer is cut to your inside dimensions, given as length by width by depth. Measure the product with any wrapping, tissue or insert it will travel with, then add a small allowance so it slides in without force.

A box that is too large needs filler and costs more to ship, because carriers charge by size as well as weight. Our guide to measuring box dimensions walks through the steps, and shipping box sizes lists common dimensions sellers use.

What Affects the Price of Custom Mailers

Buyers searching for the cheapest custom mailer boxes usually find that a few choices drive most of the cost.

• Quantity: unit price drops as order volume grows.
• Size and board: larger boxes and thicker flutes use more material.
• Print coverage: inside printing and full-bleed designs add press work.
• Finishes and inserts: foil, spot UV and die-cut inserts add steps.

To keep costs low, standardize two or three box sizes, limit inside printing to the lid, and choose one finish. Our article on right-sized mailer boxes shows how size choices also cut postage.

Who Uses Box Mailers

Box mailers fit almost any product that ships direct to a customer.

• Apparel and accessories: folded garments, hats and jewelry.
• Beauty and skincare: bottles and jars held in place by an insert.
• Subscription and PR kits: themed boxes that change each month or launch.
• Food gifts: sealed treats, coffee and snacks.
• Electronics accessories: cases, cables and small devices.

See more ideas in how to design beautiful custom mailer boxes.

How to Order Custom Mailing Boxes From Packwhole

Ordering takes a few simple steps.

1. Send your details: box style, inside dimensions, quantity and any finish you want.
2. Get free design help: our team prepares the dieline and helps place your artwork at no charge.
3. Approve a digital proof: you see exactly how the printed box will look before production.
4. Production and delivery: with fast turnaround, flat-packed boxes arrive ready to fold.

Because minimums are low, a new label can test one design first and expand its custom mailer boxes line once demand is clear. Need a different format? Browse all custom packaging boxes USA styles, or request a quote with your dimensions today.