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Square Mailer Boxes

Samples available
Ship products in style with square mailer boxes. No secondary packaging needed. Available in quantities 1 to 600 – and orders over $100 ship free. See details
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Create a unique unboxing experience with square mailer boxes.

  • 2 size options
  • 1/8" white B-flute corrugated cardboard
  • Full interior & exterior printing
  • No minimum order
  • 100% recyclable

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 surface, inside and out. 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 (be sure to remove any die-lines to prevent them from getting printed). 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.

VistaPrint offers Square Mailer Boxes design templates in assorted styles.

Reviews

(43 reviews)
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Reviewed by 43 customers

Everything I Hoped It Be
Aug 17, 2026 | Tiffany B. |
Verified Buyer
I was surprised by this product. I had high hopes but I didn’t think the stars would align. I was wrong. The actual product was perfection. The printing quality far exceeded my expectations, and the size was perfect for everything I hoped to pack into the box. It is sturdy, easy to assemble, and I can’t wait for my next purchase! 100% worth it.

Exactly what I was looking for!
Aug 17, 2026 | Victoria A. |
Verified Buyer
The mail boxes are very durable. The print came out fantastic and are perfect for my baking business. Highly recommend. VistaPrint has been really great for me starting my brand because they save all of my logos and patterns and so I can very easily switch between products and get the same result.

Too dark
Aug 17, 2026 | James J. |
Verified Buyer
Boxes came out to dark.
Response from Vistaprint Customer Care Team:
We are sorry to hear that your Mailer Boxes turned out too dark, and understand how disappointing it is when the final printed product falls short of your hopes. After reviewing your file, we noted the submitted design was quite dark and lacked sufficient color contrast, which heavily impacts how the colors transfer during the printing process. To set clear expectations and help you achieve the vibrant look you desire, we recommend carefully checking the preview mode and reviewing the PDF proof prior to placing an order. Furthermore, we recommend that you consider making the necessary design edits such as brightening the colors or increasing contrast. Once done, you are welcome to reorder at your convenience. We trust you'll find this helpful. Should you have any questions or need further assistance, please don't hesitate to call us at 1-866-207-4955.

They look and are great!
Jun 22, 2026 | Alejandra H. |
Verified Buyer
Sturdy, well printed, strong hold for my pies. Great product.

Awesome
Jun 7, 2026 | aram o. |
Verified Buyer
Will be ordering more soon

Displaying Reviews 1-5

Work with a designer

Let us design it for you

No more guesswork. We take care of the entire design process, from brainstorming ideas to delivering the files to your account.

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Frequently asked questions

The box will arrive flat-packed, but assembly is simple. Check out our video in the “Overview” section that walks through assembling your box for the first time.

We offer various ways for you to start designing. You can download one of our many templates, upload your own unique design, or use one of our design services. Remember to remove the die-lines from your uploaded image, otherwise they will be printed along with your design.

Our square mailers are made of white B-flute, corrugated cardboard, which is strong enough to endure most shipping scenarios.

Here is the weight of each box according to its size:

  • 12" x 12" x 2.25": 8 oz.
  • 14" x 14" x 2.25": 10 oz.

Yes, VistaPrint’s square mailers are widely recyclable, based on many recycling programs. This may vary depending on the area in which you are using and trying to recycle our products, so we recommend you check in with local resources and recycling programs to confirm.

Yes, you can. There’s no minimum quantity order. Whether you need 1 custom-printed square mailer box with your design to check the quality or a larger batch for your full order, we’ve got you covered.

Yes. You can order sample boxes in all our available sizes. We'll send a box pre-printed with a sample design for only $4 – and get free standard shipping when you use code SAMPLEBOX at checkout. This way, you can get a feel for the quality and try out different sizes before you order your one-of-a-kind design in bulk. Order your sample square mailer boxes now. And if you'd like to see your unique design in print, you can order 1 custom-printed square mailer box on this page to make sure everything looks as you envisioned before placing your bulk order.