Mailer boxes are the workhorse of e-commerce packaging, built to ship flat, assemble fast, and protect a product without adding much weight or cost. This guide covers how to choose the right mailer box for your product, what drives the price, and what to check before you place an order.
What Is a Custom Mailer Box?
A custom mailer box is a corrugated cardboard box designed to ship flat and fold into shape, typically with a self-locking tab closure instead of tape. It's built around your product's dimensions and printed with your branding on the inside, outside, or both.
Mailer boxes are popular because they solve a few problems at once:
They ship and store flat, saving warehouse space before assembly
They fold together quickly without extra tools or glue
They print well on both the interior and exterior, giving two branding surfaces
They protect reasonably well for lightweight to mid-weight products
This combination is why so many e-commerce and subscription brands default to mailer boxes as their standard shipping packaging.
How Is a Mailer Box Different from a Standard Shipping Box?
A standard shipping box usually needs tape to close and often ships pre-assembled, taking up more storage space. A mailer box ships flat and uses a tuck-lock or similar closure, so a business can store thousands of them in a fraction of the space a pre-assembled box would need.
Which Mailer Box Material Should You Choose?
Single-wall corrugated cardboard is the standard material for most mailer boxes, offering a good balance of protection and cost for lightweight to mid-weight products. Heavier or bulkier products may need double-wall board for extra strength.
Material | Best For | Durability | Typical Cost |
|---|---|---|---|
Single-Wall Corrugated | Standard e-commerce products, apparel, accessories | Moderate | Lower |
Double-Wall Corrugated | Heavier or bulkier items | High | Moderate to higher |
Kraft-Finish Corrugated | Brands wanting a natural, eco-friendly look | Moderate | Lower to moderate |
Is Single-Wall Cardboard Strong Enough for Shipping?
For most lightweight to mid-weight products, yes. Single-wall corrugated board handles standard parcel shipping well, and it's only when a product is heavy, fragile, or prone to crushing under stacked weight that double-wall board becomes worth the extra cost.
What Size Mailer Box Do You Need?
Choose a mailer box sized close to your product's actual dimensions, leaving only enough room for padding or inserts. Many carriers, including USPS and UPS, calculate shipping costs using dimensional weight, so an oversized box can raise your shipping rate even for a lightweight product.
Steps to find the right size:
Measure your product's length, width, and height in inches
Add space for any padding, inserts, or void-fill material
Round up slightly to a standard mailer box size if one fits closely
Confirm the box meets your chosen carrier's size guidelines
A box that's too large wastes material and increases the risk of the product shifting during transit, while a box that's too tight can put pressure on the contents.
How Much Do Custom Mailer Boxes Cost?
Custom mailer boxes typically cost between $0.50 and $3.00 per unit, depending on material, print complexity, and order volume. Larger orders bring the per-unit price down significantly compared to smaller test runs.
Cost Factor | Impact on Price |
|---|---|
Order quantity | Higher volume lowers per-unit cost |
Print colors | Full-color interior and exterior printing costs more than one color |
Material (single vs. double-wall) | Double-wall costs more |
Finishes (matte lamination, foil, spot UV) | Each one adds to the price |
Shipping | Included shipping lowers the total cost |
Ask for a full itemized quote, since setup fees or plate charges for certain printing methods can add to the total if they aren't included upfront.
Is It Worth Printing the Inside of a Mailer Box?
For many brands, yes. Interior printing creates a stronger unboxing moment, since the inside of the box is the first thing a customer sees when opening a package. It adds a modest cost but can be worth it for brands focused on presentation as part of the customer experience.
What Should You Look for in a Mailer Box Supplier?
Look for a supplier who offers a real proof before production, clear pricing, and a realistic turnaround time for your order. A reliable supplier matters as much as the box design itself, since a delayed shipment can hold up product launches or restocks.
Questions worth asking before you order:
What is the minimum order quantity for custom mailer boxes?
Can you see a sample or digital proof before full production?
What is the realistic turnaround time?
Is shipping included in the quote, or billed separately?
Can they support both interior and exterior printing if needed?
Packaging Ship, a US-based custom packaging company located in Valley Stream, New York, produces custom mailer boxes along with rigid boxes, tuck boxes, food packaging, cosmetic boxes, and mylar bags, offering free design support and free shipping with no unusually high minimums. Getting straightforward answers to the questions above from a supplier like this before you order is a good sign of how smoothly the rest of the process will go.
How Do You Order Custom Mailer Boxes Step by Step?
Ordering a mailer box generally follows the same process across most US suppliers, from measuring your product to receiving the finished boxes.
Measure your product and decide on padding or insert needs
Choose your material, either single-wall or double-wall corrugated
Submit your logo and branding for interior and exterior print placement
Review a digital proof and request any changes
Approve the proof and move into production
Receive your order, typically within two to four weeks
Planning ahead rather than rushing the proofing step is one of the easier ways to avoid costly reprints later.
Frequently Asked Questions
How do I order custom mailer boxes?
Submit your product dimensions, material preference, and artwork to a packaging supplier for a quote. Once you approve a digital proof, the supplier moves into production and ships the finished boxes to your business.
How much do custom mailer boxes cost?
Prices generally range from $0.50 to $3.00 per box, depending on material, print complexity, and order size. Larger orders typically lower the per-unit cost.
What is the minimum order quantity for custom mailer boxes?
Minimums vary by supplier, with many starting between 50 and 100 units. Confirm the exact MOQ with your chosen supplier before finalizing your design.
How long does it take to get custom mailer boxes made?
Standard production and shipping usually takes two to four weeks, depending on order size and finish complexity. Rush production is often available for an added cost.
Where can I get custom mailer boxes made in the USA?
US-based suppliers such as Packaging Ship produce custom mailer boxes along with rigid boxes, tuck boxes, food packaging, cosmetic boxes, and mylar bags. Requesting a sample before a full production run helps confirm the fit and print quality.
What material is best for custom mailer boxes?
Single-wall corrugated cardboard works well for most lightweight to mid-weight products, while double-wall corrugated suits heavier or bulkier items that need extra crush resistance. The right choice depends on your product's weight and fragility.
Does mailer box size affect shipping cost?
Yes, an oversized mailer box can increase shipping cost through dimensional weight pricing used by most carriers, even if the product itself is lightweight. Sizing the box close to your product helps control both protection and shipping cost.
