Mailing bags have become one of the most essential packaging products for modern businesses. Whether you’re shipping clothing, documents, e‑commerce orders or subscription products, the right mailing bag can reduce your costs, protect your items, and improve the customer experience.
In this guide, we’ll break down everything you need to know about mailing bags—what they are, the different types available, and how to choose the best option for your business.
What Are Mailing Bags?
Mailing bags are lightweight, flexible packaging solutions designed for sending goods through postal and courier networks. They’re widely used across e‑commerce, retail, fulfilment centres, and direct‑to‑consumer brands because they provide secure, low‑cost protection without the bulk of cardboard boxes.
Benefits of Using Mailing Bags
✔ Cost‑Effective
Mailing bags are generally cheaper than boxes, and their lightweight construction helps reduce postage and courier costs.
✔ Weather‑Resistant Protection
Most poly mailers are waterproof, protecting products from rain, dirt, and handling during transit.
✔ Saves Space
Because they’re supplied flat, they take up far less storage space than cardboard packaging.
✔ Quick & Easy to Use
With peel‑and‑seal closures, packing is fast—ideal for busy despatch teams.
✔ Eco‑Friendly Options Available
With more companies switching to sustainable packaging, compostable and recycled-content mailing bags are now widely available.
Types of Mailing Bags
1. Poly Mailing Bags
Poly mailers are the most common type—made from strong LDPE (low-density polyethylene).
They’re ideal for:
- clothing & textiles
- soft goods
- lightweight e‑commerce items
Key features:
- waterproof
- tear-resistant
- self‑seal strips
- opaque for privacy
Poly bags with recycled content are a great sustainable upgrade without losing performance.
2. Paper Mailing Bags
Paper mailers are fast becoming a top choice for eco‑conscious brands.
Benefits:
- 100% recyclable
- biodegradable
- strong kraft construction
- premium look and feel
They’re perfect for fashion, giftware, home products, and brands that want packaging with a natural aesthetic.
3. Padded Mailing Bags
For items needing extra protection—such as cosmetics, electronics, books or small gifts—padded mailers offer built‑in cushioning.
Options include:
- bubble-lined mailers
- eco-friendly padded paper mailers (no plastic bubble, fully recyclable)
These add impact protection without needing extra bubble wrap or void fill.
4. Compostable Mailing Bags
Compostable mailers are made from plant-based materials like corn starch or PBAT.
They break down in home or industrial composting environments.
Ideal for:
- sustainable brands
- natural/organic product sellers
- companies committed to plastic reduction
They typically look like standard poly mailers but offer a much smaller environmental footprint.
How to Choose the Right Mailing Bag
1. Consider Product Size & Shape
Choose a bag that gives a snug fit without excessive empty space. Oversizing costs more in postage.
2. Assess the Level of Protection Needed
- Soft items → standard poly or paper mailers
- Fragile or high-value items → padded mailers
3. Think About Your Brand Image
Eco-friendly bags can elevate your brand message and appeal to conscious consumers.
4. Don’t Forget Courier Requirements
Some couriers have size/thickness rules—mailing bags often help you stay within “large letter” or “small parcel” brackets.
5. Look for Sustainable Options
Consumers care more than ever about packaging waste. Recycled-content or compostable mailers can help boost customer satisfaction and reduce carbon impact.
Why Mailing Bags Are Essential for Modern E‑Commerce
With online shopping at an all-time high, efficient packaging is crucial. Mailing bags offer:
- faster packing
- lower delivery costs
- reduced environmental impact
- protection and professionalism
From small Etsy sellers to major fulfilment operations, they’re a simple and reliable solution for almost any non-fragile product.
Mailing bags are versatile, cost‑effective, and available in a range of materials to suit different products and brand values. Whether you choose recycled poly mailers, kraft paper bags, or fully compostable alternatives, the right choice can streamline your shipping process and enhance the customer experience.