What sizes are mailer boxes available in?

We offer fully custom sizing. Common sizes range from 6×4×2" for small items to 18×14×6" for clothing and larger products.

Can I print on the inside of mailer boxes?

Yes — interior printing is one of the most popular features. Full-colour CMYK printing is available on both interior and exterior surfaces.

How much do custom mailer boxes cost?

Pricing starts from $0.80–$4.00 per unit depending on size, material, print complexity, and quantity. Get a free quote with exact pricing.

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Mailer Boxes

Custom Mailer Boxes

Design custom printed mailer boxes that create memorable unboxing experiences for your brand.

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Products

50 units

Min Order

7–14 days

Turnaround

Free USA

Shipping

check_circleFull interior & exterior printing

check_circleTuck-end closure — no tape needed

check_circleFSC-certified materials

check_circleCustom sizes available

check_circleMinimum 50 units

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About Custom Mailer Boxes

Custom mailer boxes are the cornerstone of modern e-commerce packaging. With full interior and exterior printing, your brand story begins the moment your customer receives their delivery. Our mailer boxes are available in corrugated kraft, white SBS, and black board — all fully customizable with matte, gloss, or soft-touch finishes.

At The Treasure Boxes, every mailer boxes order includes free dieline design, 3D mockups, and artwork assistance. With no minimum order quantity, 7-day production, and free shipping across the USA, we make premium custom packaging accessible to brands of all sizes — from startups ordering 50 units to enterprises ordering 50,000+.