Mailer Box vs Carton Box: Which Is Better for E-commerce Orders?
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Online sellers usually ship in one of two box types: a mailer box or a carton box (also called a regular slotted carton or RSC). Both are made of corrugated board, but they suit different orders. Here's how to choose.
What is a mailer box?
A mailer box is a die-cut corrugated box with a tuck-in flap lid, like a pizza box but stronger. It opens like a gift box, which is why D2C and gifting brands love it for unboxing. Mailers are usually wider than they are tall, which makes them ideal for flat or small products.
See our corrugated mailer boxes, available in brown kraft and white.
What is a carton box?
A carton box is the classic shipping box with four flaps on top and four at the bottom, sealed with packing tape. It is strong, simple, cost-effective, and available in taller and larger sizes. That makes it the standard for bulk, heavy and bigger orders.
See our brown carton boxes and white corrugated boxes.
Mailer box vs carton box
| Mailer box | Carton box | |
|---|---|---|
| Look and unboxing | Premium, gift-like | Plain, functional |
| Closing | Tuck-in flap (tape recommended for courier) | Flaps sealed with tape |
| Best shape | Flat and small to medium items | Tall, bulky or heavy items |
| Branding | Great for custom printing | Usually plain or a simple logo |
| Typical uses | Cosmetics, jewellery, clothing, candles, gift sets, subscription boxes | Bulk orders, electronics, household products, multiple items, B2B dispatch |
Which should you choose?
- Choose a mailer box if you sell small or premium products to consumers and want a better unboxing experience, especially with a custom printed mailer.
- Choose a carton box for heavier, taller or bulk orders where strength and cost matter more than presentation.
- Many sellers use both: mailers for single-item orders, cartons for multi-item and bulk orders.
Tips for both
- Pick the smallest size that fits with padding. Couriers charge by volumetric weight, so check yours with our volumetric weight calculator.
- Seal with good BOPP packing tape for courier shipping.
- Not sure about the size? Read our box size guide for clothes or order a sample first.
PackXpress is run by KNS Packaging, a corrugated box manufacturer in Delhi. Every product page shows the price per box, and shipping is free on prepaid orders across India.
