Create a unique unboxing experience with square mailer boxes.

  • 3 size options
  • 1/8" white B-flute corrugated cardboard
  • Full surface exterior printing
  • No minimum order
  • 100% recyclable
  • FSC® certified product: Made from responsibly forested materials

Square Mailer Box Samples: Want to see a pre-printed box in person, before you design and order your own?  Request a sample. Or view all of our packaging sample options here.

Shipping made simpler
Why use multiple types of packaging when you only need one? Our square mailer boxes are made from sturdy, white B-flute corrugated cardboard, so all you have to do is stick a shipping label on them and they’re ready to go. The internal fluting protects your goods by absorbing any bumps and thumps they may receive along the way.

Corner-to-corner printing
These won’t be just any square cardboard boxes, because you’ll be able to design and print the entire exterior surface. What better way to make your brand memorable from every angle? Our custom square mailer boxes are great for smaller subscription orders, apparel, books, stationery, beauty products and more. If you’re looking for boxes with a larger capacity for bigger products or combination orders, check out our mailer boxes.

Intuitive design tools
Maybe you’re new to designing, or maybe you already have a unique logo or design of your own. Using our 3D design studio , you can create the look you’re searching for. Choose from one of our many custom design templates or upload your own logos, images, fonts or patterns. The 3D view lets you see what your boxes will look like in real life. Just make sure you remove the die-lines from your uploaded image before printing, otherwise they will appear on your final product. And that’s it, just sit back and wait for your professionally printed square mailers to arrive.

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Reviewed by 1 customers


Jul 29, 2023 | Scalpillaire | Verified Buyer

this was literally a pizza box with my custom design. the size I indicated was wrong

Response from Vistaprint Customer Care Team:

We apologize for the inconvenience caused by the incorrect size of the Mailer Boxes with your custom design. Your satisfaction is important to us, and we regret that we didn't meet your expectations. We're more than willing to make things right for you. Kindly respond to this email with the images of the Boxes received, and we'll work with you to find a solution that you'll be pleased with. Thank you for bringing this to our attention, and we look forward to hearing from you.

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