Custom Mailer Box Supplier

Custom Mailer Boxes

Shipping Strength Meets Shelf Appeal

Our mailer boxes are built to withstand rough handling while looking polished and professional — perfect for creating memorable unboxing experiences.

Material Options

We use strong, customizable boards designed for both protection and print quality:

• Corrugated Cardboard – Single or double wall for strength
• White Kraft (Bleached) – Clean surface for vibrant printing
• Natural Kraft (Brown) – Eco-conscious, rustic aesthetic
• Coated Board Options – For a smooth, premium print finish

Mailer Box Styles

We manufacture all major mailer box formats, including:

• Standard Roll-End Tuck-Top (RETT) – Secure and versatile for most products
• Front Lock Mailers – Built-in dust flaps with locking tabs
• Self-Locking Mailers – No glue, easy assembly
• Die-Cut Custom Mailers – Tailored to your product’s shape
• Flat-Pack Boxes – Foldable for storage and cost-effective shipping

Custom Sizes & Inserts

We build every mailer box to your exact dimensions:

• Snug fit reduces movement and damage
• Inner foam, cardboard, or paperboard inserts
• Compartmental dividers for kits or collections
• Custom tape or printed inner flaps for branding

Printing & Finishing Options

Turn your box into a branding opportunity with standout print features:

• CMYK or Pantone printing
• Inside-and-out custom printing
• Matte, gloss, or soft-touch lamination
• Spot UV, foil stamping, or embossing
• QR codes, hashtags, and personalized messages

Best Uses for Mailer Boxes

We supply mailer boxes for brands across many industries:

• E-commerce product shipping
• Subscription boxes
• Promotional mailers and influencer kits
• Corporate gifting
• Retail packaging for direct-to-consumer brands

The 3Ps of Mailer Box Packaging

Presentation

A custom-designed box creates a premium unboxing experience.

Protection

Strong, crush-resistant construction keeps contents safe from warehouse to doorstep.

Personalization

Every box is tailored to your brand, audience, and product line.

Why Choose Custom Boxes Lab as Your Mailer Box Supplier?

We make high-quality mailer boxes easy, from concept to doorstep.

• Low MOQs for small businesses
• Bulk pricing for large-scale brands
• Eco-friendly materials and inks
• Free diagrams and design guidance
• Fast production and nationwide delivery

Get a Custom Mailer Box Quote Today

Let’s build packaging that ships safely and sells instantly. To get cost-effective packaging boxes without compromising on quality, you can contact us at (469) 649-8706 or email us sales@customboxeslab.com

When measuring a custom box, there are a few technical specifications that must be considered to ensure proper design, manufacturing, and fit for the product. Here are the major technical things to measure a custom box:

Inside Dimensions (Critical for Product Fit)

• Length (L): The longest side of the box measured inside from one corner to the opposite corner.
• Width (W): The shorter side of the box measured inside perpendicular to the length.
• Depth/Height (D or H): Measured inside from the bottom to the top opening of the box. Always specify that dimensions are given in Length × Width × Height.

Outside Dimensions (Important for Shipping & Storage)

• Measure the outer surfaces of the box including material thickness.
• Outside measurements are used for pallet stacking, warehouse spacing, and shipping compliance.

Material Thickness (Board Caliper)

• The thickness of the packaging material (e.g., corrugated board, rigid stock, cardstock).
• Impacts both the internal usable space and external dimensions.

Flap Measurements

• For boxes with flaps (e.g., mailer or shipping boxes), measure:
• Inner flaps: Ensure they meet in the middle without overlapping too much.
• Outer flaps: Allow proper sealing without gaps.

Tolerances

• Account for manufacturing tolerances (usually ±1/16" or ±2mm depending on material).
• Ensure the product fits without being too tight or loose.

Volume Capacity

• Calculate internal cubic capacity (L × W × H).
• Helps in determining how much space the product will occupy and shipping efficiency.

Product Orientation

• Decide how the product sits inside the box and measure accordingly.
• Orientation affects whether length or width is the primary dimension.

Die-Cut Openings or Windows

• Measure exact placement, height, and width for any cutouts.
• Ensure structural integrity when adding windows.

Printing Bleed & Safe Zones

• Include measurements for:
• Bleed area: Extra space beyond the cut line for printing.
• Safe zone: Inner area where critical text or logos should be placed.

Closure Type & Locking Tabs

• Measure slots, tabs, or locks for boxes with custom closures.
• Precision is required to avoid misalignment during assembly.

Packaging Style

• Folds, creases, and scores must be measured for accurate dieline creation.
• Different styles (e.g., RSC, tuck-end, mailer, sleeve) require specific panel measurements.