What are mailer boxes and are they right for my business?

Mailer boxes (also called e-commerce boxes or self-locking boxes) are rigid, sturdy packaging boxes designed specifically for shipping products directly to customers — without needing an outer shipping carton.

They feature:

• Self-locking tabs — no tape required to close


• Printed exterior and interior — both sides can carry your branding


• Sturdy single or double wall construction


• Easy open and close — great for unboxing experiences

Why mailer boxes are so popular:
Mailer boxes have become the go-to packaging for subscription boxes, premium e-commerce brands, and direct-to-consumer businesses because they double as both protective shipping packaging and branded marketing material. Every delivery becomes a brand impression.

Are mailer boxes right for your business?


• ✅ You sell products online and ship directly to customers


• ✅ You want to create an impressive unboxing experience


• ✅ You want your packaging to reflect your brand quality


• ✅ You run a subscription box service


• ❌ Your products are very heavy (use corrugated RSC boxes instead)


• ❌ You need the absolute cheapest shipping option

Typical sizes range from 100x100x50mm for small accessories to 400x300x100mm for clothing and larger products. Custom sizes are available to fit your exact product.