Whether you’re running an e-commerce store or shipping products internationally, mailer bags play a vital role in protecting your items and representing your brand. However, many businesses make costly mistakes when buying mailer bags, resulting in product damage, unhappy customers, or wasted money.
This guide highlights 7 common mistakes to avoid when purchasing mailer bags — and how to choose the right ones for your needs.
❌ 1. Choosing the Wrong Size
Many businesses underestimate the importance of bag size. A bag that’s too small won’t fit your product, while an oversized bag wastes material and increases shipping costs.
✅ How to avoid it:
Measure your product’s dimensions accurately, including thickness. Allow extra space for protective padding or folding. When in doubt, request size samples from your supplier.
❌ 2. Ignoring Thickness (Micron or Mil Level)
Thickness affects the bag’s durability. If you choose a mailer that’s too thin, it may tear during transit — especially for heavy or sharp-edged items.
✅ How to avoid it:
Ask your supplier about recommended thickness for your product type. For example:
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50–60 microns for apparel
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70–90 microns for books or heavier items
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100 microns for bulkier or fragile goods
❌ 3. Overlooking Seal Quality
A weak or unreliable adhesive strip can cause the package to open during shipping, exposing products to damage or theft.
✅ How to avoid it:
Request bags with strong tamper-evident self-seal strips. For high-value items, consider double-seal bags or two-layer security mailers.
❌ 4. Not Considering Branding Opportunities
Mailer bags are more than just protection — they’re also a branding tool. Using plain, generic bags is a missed opportunity to promote your company.
✅ How to avoid it:
Opt for custom printed mailer bags with your logo, brand colors, or messaging. This improves customer experience and enhances brand recognition.
👉 See how Hanpak helps businesses customize their mailer bags (internal link)
❌ 5. Using Non-Eco-Friendly Options by Default
Many businesses continue using traditional plastic mailers without realizing there are eco-friendly alternatives available — which can appeal to environmentally conscious customers.
✅ How to avoid it:
Explore compostable, biodegradable, or recyclable mailer bags. Ask your supplier if their bags meet environmental certifications such as OK Compost or EN13432.
❌ 6. Ordering Without Testing Samples
Jumping into a large order without testing the product first is risky. Bag quality, sealing strength, and usability vary between suppliers.
✅ How to avoid it:
Request free samples to test before ordering in bulk. Check sealing, durability, and how the bag performs in real shipping conditions.
❌ 7. Choosing the Wrong Supplier
Low-cost suppliers may offer cheap prices, but that often comes at the expense of consistency, print quality, or delivery time.
✅ How to avoid it:
Choose an experienced and reliable supplier with positive reviews, export experience, and customization options. A professional partner can help you avoid all the mistakes above.
👉 Why businesses choose Hanpak for custom mailer bag solutions (internal link)
✅ Conclusion: Buy Smart, Pack Smarter
Buying mailer bags might seem simple — but making the wrong choices can cost you time, money, and customers. By avoiding these common mistakes and working with a trusted supplier like Hanpak, you’ll ensure your packaging is secure, stylish, and sustainable.
For more information about Hanpak Vietnam’s plastic bag products, please contact us:
📧 Email: info@hanpak.com.vn
📞 Hotline (Mobile/WhatsApp): +84 898 545 893
Our experienced sales team is ready to assist you. Contact us today to place your order and experience the quality and reliability that Hanpak Vietnam offers.