BoxCrisp

Choosing

Mailer box vs shipping box vs folding carton

Most brands ask for a mailer because they have seen one. About a third of them should be buying a folding carton instead.

July 29, 20266 minute readWritten by the BoxCrisp team

Most people arrive asking for a mailer box, because a mailer is the box they have seen. It is the one that shows up from the brands they like. Sometimes it is the right call. Often the honest answer is that a folding carton would cost them a third as much and do the same job, and we would rather say so.

The short version

 Mailer boxShipping boxFolding carton
MaterialE or B flute corrugatedB, C or double wallPaperboard, no flute
Ships on its ownYesYesNo
Needs tapeNo, it tucksYesNo
Typical cost each$1.20 and up80 cents and up45 cents and up
Best atThe unboxing momentProtecting heavy thingsSitting on a shelf
The cut edge of three boards, magnified. A mailer is E flute, a fine wave between two liners. A shipping box is B flute, a coarser and taller wave. A folding carton is a single solid sheet of paperboard with no flute at all.MailerShips aloneE fluteShipping boxTakes a beatingB fluteFolding cartonSits on a shelfPaperboardThe cut edge of the board, magnified
The board is the difference. A mailer and a shipping box are corrugated, so there is a fluted wave carrying the load between two flat liners. A folding carton is one solid sheet, which is why it is cheaper and lighter and no use on its own in the post.

Mailer boxes

A mailer is corrugated, and it folds into itself with a front flap that tucks down. No tape, no separate lid. It is strong enough to go through the postal system naked, which is why direct to consumer brands love it: one box does the protecting and the presenting.

The catch is cost. You are paying for corrugated board and for full color printing on a surface that is harder to print on than flat paperboard. If your product is light and already going inside another shipper, a mailer is money spent on a box that nobody outside your warehouse will ever admire.

Pick one if customers open it themselves, and the opening matters to you. Custom mailer boxes start at 100 units with us.

Shipping boxes

A regular slotted carton, the classic brown box with four flaps that meet in the middle. Cheap per cubic inch, strong, stackable, and it takes tape. This is what you want when the contents are heavy, fragile, or several items that need room to be padded.

You can print on them, and a one color logo on a plain shipper is a genuinely good value move. Full color on a big shipper gets expensive fast, and most of that printing ends up scuffed by the courier anyway. Our honest advice is one or two colors here.

Pick one if you ship anything over a couple of pounds, or you are packing multiple items per order. Custom shipping boxes are the format for that.

Folding cartons

Thin paperboard, no corrugation, the box a tube of toothpaste comes in. It ships flat, folds up in seconds, and takes fine detail beautifully because the surface is smooth. It is by far the cheapest of the three.

It also offers almost no protection. A carton is a wrapper, not armour. If it goes in the post on its own it will arrive looking like it has had a hard week.

Pick one if your product sits on a shelf, or goes inside a bigger shipper, or you are selling something like supplements or cosmetics where the carton is packaging rather than transport. See custom folding cartons.

So which one

Three questions settle it most of the time.

  1. Does this box go through the mail by itself? No means carton. Yes means mailer or shipper.
  2. Is it over about two pounds, or breakable? Yes means shipping box, with an insert if it can move around.
  3. Is a customer going to open it and feel something? Yes means mailer, and it is worth the extra.

The combination most brands land on

A printed folding carton around the product, inside a plain or lightly printed shipper for transit. You get the shelf look and the protection, and it usually comes in cheaper than a single premium mailer doing both jobs. It is less glamorous than a big branded mailer, and for a lot of products it is the right answer.

If you are weighing two options, the cost guide will price both in about ten seconds, or just ask us and we will quote all three so you can see the gap for yourself.

Next step

Price both and let the number decide

The estimator takes a size and a quantity and gives you a range for either format on the same page. Comparing two real numbers settles this faster than any comparison table can.

Price both formats

The boxes themselves

Formats this applies to

Every one of these is printed to your brand, starts at 100 units and comes with free design and a proof before anything goes on press.

Want us to sanity check your box?

Send us your product and rough quantity. We will come back with a size, a price and a free mockup, and we will tell you if you are about to order the wrong thing.

Rather just email? hello@boxcrisp.com