Fast Turnaround
Free Design Support
High-quality Printing
Free Shipping

Mailer Boxes

Design custom mailer boxes in any size and bring your ideas to life.

Show off your own logo and special artwork all over your box design to make what’s inside stand out even more.

Constructed with corrugated cardboard and protective dust flaps to safely ship your products directly.

Our mailer boxes are designed to stay strong, no matter if you’re sending them directly to customers, selling online, or running a subscription service.

If you don’t need mailer boxes, you can also customize shipping boxes in any size you want.

Let’s customize with fast turnaround and low minimums.

Request a Quote
Product Quotation Form | ECB

Get Started with Custom Mailer Boxes

The use of mailer boxes is an excellent option for ecommerce packaging, gifts, retail, and for subscription boxes. These boxes will make an impression on customers during the unboxing experience and deliver a WOW factor.

Businesses can choose from various mailer box sizes to meet their specific needs, whether a company needs a small box to ship a single item or a large box to ship multiple items.

Custom Size
CMYK Print

Stylish and Durable

A Mailer box that is stylish and well-designed protects your goods during transportation as well as enhances your brand image. The thickness of the material used to construct the mailer box also affects its durability.

For manufacturing a sturdy custom mailer box, we use E-Flute corrugated cardboard with 1/16″ height which can hold 1 to 10lbs and B-Flute corrugated cardboard with 1/8″ height which can hold 1 to 30lbs.

Don’t worry if you are unsure about the thickness of your product box and do not know what to do; share your details with us, and we will automatically adjust the box thickness for you.

Material Options

Classic White

A matte finish is the most popular option. This is characterized by a non-glossy, flat appearance that absorbs light, making colors muted and subdued.

Premium White

A satin finish is available on premium white cardboard, with a slightly glossy appearance reflecting light, allowing colors to appear more vibrant and lustrous.

Kraft (Brown)

This cardboard type is known as natural Kraft and allows you to print minimal designs that exhibit dull colors. It provides a natural look, which is best for eco-friendly concerns.

Printing Options for Mailer Boxes


Only inside-box printing is possible.


Only outside box printing is possible.

Double Sided

It is possible to print on both sides, whether inside or outside.

No Printing

You can get the plain box without printing.

RJ Archambo

ECB is very easy to work with and delivered a high quality final product. This was top tier customer service and quality. We will continue to work with ECB.


Amazing company! Micheal helped me with my idea and walked me through the entire process. The price was amazing; everything exceeded my expectations. And it was super fast. I received my tracking number, and my boxes came two days earlier.

Make a Memorable Unboxing Experience

The use of custom mailer boxes can enhance the unboxing experience by providing a professional appearance as well as protecting the inside item.

Customers may feel more connected to a business when these features are present, which can create a positive impression of the brand, increase client loyalty, and create a positive brand impression.

Unique and attractive packaging will likely encourage people to post unboxing videos on social media.

How to assemble a Mailer Box

Need a Sample?

For a preview of how our mailer boxes will look, order a pre-production sample with your artwork from us. If you are pleased with the quality of the box and printing, we will proceed with the manufacturing process.

Mailer vs Shipping Box

They are both made from sturdy corrugated cardboard for packaging and shipping products.

Mailer Box

Mailer boxes are smaller and designed to ship small items such as retail items or e-commerce goods. No additional tape is required because they are self-locking.

Shipping Box

Shipping boxes are generally larger and designed to accommodate multiple items simultaneously. Additional sealing materials are required.

We Believe in Sustainability

Our packaging boxes are made from corrugated and paper-based materials because we value the environment. We use only renewable, biodegradable, and recyclable materials.

Frequently Asked Questions

We’ve answered all the questions you may have before ordering a box.
What is your minimum order quantity?

The minimum order limit is not applicable; you are free to order any number of boxes that you need.

Can I get the dieline template?

Yes, you can get the dieline template for your boxes.

How can I decrease my pricing per unit?

Increasing your order quantity will allow you to get mailer boxes in lower price. The size of your box often decides the price.

What is your turnaround time?

We will start work on your order as soon as you finalize the quote. Our priority is to deliver it within 7 to 10 working days.

Can my mailer boxes be shipped assembled?

Assembling your custom mailer boxes is your responsibility after receiving them because they are delivered unassembled.

Is shipping the items without any external packaging in a mailer box possible?

Although mailer boxes appear sturdy enough to protect the product, some external packaging would be recommended for increased safety.

Which size mailer box should I choose for my product?

To allow room for packing materials such as bubble wrap and packing peanuts, measure your product and choose a mailer box slightly larger than it. Do you need help measuring the product? Take a look at this guide.

Can I customize my box with branding or design elements?

Your boxes can be customized to match any idea, dimensions, or branding so your business stands out and your customer experience is memorable.