Custom Self Seal Mailer Boxes, Sized to Fit Your Product

What is a self seal mailer box?

It is a corrugated mailer that folds up from one flat blank. A strip of adhesive sits on the lid flap, covered by a thin paper liner.

The shape is close to a standard custom mailer box with a tuck lid. Only the closure changes. The glue replaces the friction tuck and the strip of packing tape.

Do I need a tear strip?

A tear strip is a perforated pull tab in the front panel. Your customer tugs it and the lid opens without scissors.

Because the seal is strong, people tend to hack at the box with a knife when there is no tab. That can scratch the product. If you want buyers to return items, ask about a second strip on the same box. We will check whether your flap depth allows it.

Should I choose a self seal lid or a plain tuck lid?

A plain tuck lid holds by friction. It works for gifts you hand over in person, but in a shipping bag or truck it often needs tape to stay shut.

The adhesive lid skips that step and keeps your artwork clean. It adds a little cost per box because the glue is applied at the factory. If you pack only a handful of orders a week, tape may do the job. At higher volume, the time saved usually wins.

Some brands order both. Plain tuck boxes go to local pickups, and self seal boxes go to everything shipped by mail.

What size self seal mailer should I order?

Measure the product, then add a little room for fill or a card insert. We build the box to the inside length, width and height you give us, in inches or millimeters.

Keep the depth snug. A big gap above the product lets it slide around, and a glued lid cannot pull things tight the way a taped seam can. This guide to measuring a box from the inside shows the steps.

Is a glued lid strong enough for shipping?

For the goods these boxes normally hold, yes. The strip bonds along the full front flap, so a corner cannot lift the way a loose tuck can.

Fit matters just as much. A product that fills the box keeps pressure off the lid. For heavier items, choose B flute and add paper fill. Wrap anything breakable on its own first.

Very dense orders belong in a taped shipping carton instead.

Which board works best for self seal mailers?

Most are single wall corrugated. The flute you pick sets the thickness and the feel in the hand.

Can I print inside and outside the box?

Yes. We print plain, one color, two color or full color CMYK, outside, inside or both. A thank-you note under the lid is a favorite, because it is the first thing a customer sees.

Finishes include uncoated kraft, matte or gloss lamination, spot UV, foil stamping and embossing. Keep art clear of the glue strip and tear line. You can place your logo in Design Your Box before uploading files.