Everything Brands Need to Know About Compostable Mailers in Singapore

Key Takeaways

• Sustainable mailers are made from renewable, plant-based materials that naturally break down.
  
• They are gaining traction in Singapore as eco-friendly alternatives to plastic packaging.
  
• Businesses benefit from stronger sustainability branding and alignment with zero-waste initiatives.
  
• Look for certifications like TÜV Austria or ASTM D6400 to ensure authenticity.
  
• Local suppliers offer bulk orders, customisation, and quick delivery options.
  

Compostable Mailers as the Future of Packaging in Singapore

Across Singapore’s bustling retail and e-commerce sector, sustainable packaging is no longer optional; it’s a necessity. One of the most promising solutions is compostable mailers, sometimes also referred to as “biodegradable mailers” or “sustainable mailers”,  which provide a green alternative to traditional plastics. 

Whether you’re running an online boutique or managing corporate deliveries, switching to compostable options is a powerful way to reduce your footprint while staying competitive in a sustainability-conscious market. Beyond packaging, brands are also rethinking other eco-conscious approaches, such as reducing filler materials and adopting smarter wholesale product packaging strategies.

What Are Sustainable Mailers?

Sustainable mailers are packaging envelopes crafted from renewable plant-based materials such as cornstarch, PLA (polylactic acid), or PBAT (polybutylene adipate terephthalate). Unlike petroleum-based plastics, these materials decompose under composting conditions, leaving behind water, carbon dioxide, and organic matter instead of microplastics. In practice, this makes sustainable mailers a more responsible alternative to biodegradable bags, which can sometimes still leave traces of plastic.

Why Businesses Are Making the Switch

Companies in Singapore are increasingly adopting sustainable mailers to appeal to eco-conscious consumers and stakeholders. This switch also supports long-term environmental commitments such as zero-waste shipping and carbon footprint reduction. 

Customers today value brands that act on sustainability. The decision to replace plastics with plant-based solutions often leads to stronger brand loyalty and repeat sales. For small and medium enterprises, these efforts also showcase corporate responsibility in a competitive retail landscape.

Features and Limitations of Compostable Mailers

Modern compostable mailers are impressively durable. They’re strong enough to carry lightweight items, provide water resistance for added protection, and maintain a sleek appearance suitable for e-commerce orders. However, their limitations must be acknowledged. They are not as effective for shipping bulky items that require reinforced cardboard or moisture-prone products that need extra sealing. Understanding the balance of strengths and limitations ensures businesses make informed packaging decisions.

What to Look for in a Compostable Mailer

Not all eco-mailers are created equal. To avoid greenwashing, businesses should verify certifications like TÜV Austria’s “OK Compost” or the American ASTM D6400 standard.

These labels confirm the mailer will safely decompose in industrial composting environments. Additionally, clear product labelling and supplier transparency make it easier to guarantee authenticity. Businesses ordering in bulk should also consider suppliers that provide bulk packaging supplies, as this reduces costs while maintaining eco-standards.

Local Supply and Customisation in Singapore

The growing demand for compostable packaging has encouraged more local suppliers to step up. Singapore-based providers now offer compostable mailers in a variety of sizes and thicknesses, with options for bulk orders and fast restocks. For brands wanting to leave a memorable impression, custom printing is also available. Businesses can add logos, branded colours, or QR codes, creating packaging that is both eco-conscious and visually distinctive. This blend of function and design makes compostable packaging a strong contender in the world of custom box printing and other sustainable solutions.

A Practical Step Towards Sustainability

Switching to sustainable mailers allows you to position your brand for long-term success in Singapore’s evolving business environment. They serve as cost-effective, sustainable, and brand-friendly packaging that helps businesses resonate with today’s eco-aware consumers.

At PackInk, we provide reliable, high-quality, and sustainable mailers and other sustainable packaging options to help your brand thrive. Explore our full range of products and start making smarter packaging decisions today.