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E-commerce packaging: What You Need to Know About Poly Mailers Before Shipping

  • source:Angela Yin
  • Time:12/14/2023

Have you ever bought anything from e-commerce websites such as Amazon, shopee, or Temu? Online shopping has become a fashion lifestyle. Would you happen to know what businesses use to package your products?


In the world of e-commerce and shipping, packaging is a crucial element that ensures the safety and integrity of the product during transit. As one of e-commerce packaging, poly mailers have become a popular choice among businesses and individuals for their versatility, durability, and cost-effectiveness. But what exactly are poly mailers, and why should you consider using them for your shipping needs? This guide will walk you through everything you need to know about poly mailers before you send your next package.


What are poly mailers and their advantages:

Poly mailers are lightweight, protective packaging material made from polyethylene film, which is a type of plastic. The exterior of a poly mailer is typically white or gray and can be opaque or transparent, while the interior is often lined with a black or dark coating.


There are several benefits of poly mailers over traditional packaging options such as paper boxes or envelopes. Firstly, they are incredibly lightweight, which can significantly reduce shipping costs, especially when sending large volumes of items. Their flexibility allows for a variety of products to be shipped, from clothing to some electronics, without wasting space. Additionally, poly mailers are strong and resistant to tears and punctures, providing better protection against the elements and rough handling. They also take up less storage space, are quick to pack, and can be easily sealed with their self-adhesive strips.


poly mailers


Types of Poly Mailers:

There is a wide range of poly mailers available on the market, each designed to meet specific shipping needs. The most common types include:


Standard Poly Mailers: These are your basic mailers, lightweight, and perfect for non-fragile items.

Bubble Mailers: These have a layer of bubble wrap for added protection and are suitable for shipping delicate products.

Expansion Poly Mailers: Designed with a gusset to expand and accommodate larger or bulkier items for shipping and mailing purposes.

Returnable Poly Mailers: These come with two adhesive strips, allowing for easy returns—a favorite for online retailers.

Clear View Mailers: With a transparent window, these are useful for including addresses or invoices.

Custom Poly Mailers: These can be printed with custom designs or patterns for brand enhancement. This is a cost-effective way to improve brand influence.


What to consider when choosing poly mailers

When selecting a poly mailer, several factors should be taken into account to ensure you choose the right one for your items:


Size: Ensure that the mailer is appropriately sized for your product. It should be large enough to fit the item without forcing it and small enough to avoid excess material that can lead to mishandling.

Durability: Consider the strength of the material. For heavier items or longer transit times, a thicker poly mailer may be necessary.

Cost: Compare prices between different types and sizes, balancing the cost against the level of protection provided. You can consult different suppliers, compare prices and quality, and choose the one with the most cost-effectiveness.

Seal: Look for a strong adhesive seal to keep the contents secure during shipment.

Weather Resistance: If your package is likely to encounter wet conditions, please make sure that the mailer is waterproof or water-resistant.


How to Use :

Properly packing and sealing your items in poly mailers can make a significant difference in their arrival condition.


Choose the right size poly mailer for your item.

If the item is fragile or prone to scratches, wrap it in bubble wrap or foam before placing it in the mailer.

Place the item inside the mailer, ensuring it fits comfortably without forcing it in.

Remove the strip to reveal the adhesive on the flap.

Press the adhesive flap firmly onto the body of the mailer to create a secure seal.

Could you make sure the package does not move around? If it does, you may need additional cushioning.

Label the mailer as needed and it's ready to ship.



The environmental impact of shipping materials is an important consideration. Traditional poly mailers are made from plastic, which can contribute to environmental pollution. However, many manufacturers are now producing eco-friendly options made from recycled materials or biodegradable polymers that can help reduce this impact. When choosing poly mailers, consider looking for these sustainable options to minimize your carbon footprint.



Poly mailers are a versatile and cost-effective solution for shipping a wide range of items. As the global e-commerce industry continues to expand, merchants' demand for environmentally friendly e-commerce packaging has also increased. To learn more about e-commerce packaging, please follow us.


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