As the demand for sustainable shipping solutions grows, compostable mailers are becoming a popular alternative for eco-conscious brands. But making the switch isn’t just about swapping out one material for another. If you want your business to succeed in this eco-friendly business transition, you need to understand the benefits, limitations, and practical considerations behind compostable mailers.
Here’s everything you need to know before diving in.
1. What Are Compostable Mailers?
Compostable mailers are packaging solutions made from plant-based materials like cornstarch, PLA (polylactic acid), or PBAT (polybutylene adipate terephthalate). Unlike traditional plastic mailers, they break down in composting environments into natural elements like water, CO₂, and biomass — leaving no toxic residue.
2. Biodegradable vs. Compostable: What’s the Difference?
It’s easy to confuse “biodegradable” and “compostable,” but they’re not the same.
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Biodegradable shipping packaging refers to materials that can break down naturally over time — but the process might take years and still leave microplastics behind.
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Compostable mailers, on the other hand, decompose much faster and more cleanly — but usually under specific conditions (like in an industrial compost facility).
If your goal is truly sustainable shipping, compostable wins the day.
3. Are Compostable Mailers Durable Enough?
Yes — but it depends on what you’re shipping. Compostable mailers are generally water-resistant and tear-resistant, making them suitable for clothes, accessories, and non-fragile goods. However, if you’re shipping heavier or sharp-edged items, you may want to reinforce them or explore other eco-packaging options for extra protection.
4. Labelling & Certifications Matter
Consumers are becoming savvy about greenwashing, and so are regulators. If you’re using compostable mailers, make sure they carry certifications like:
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BPI (Biodegradable Products Institute)
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TÜV Austria’s OK Compost
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ASTM D6400 or EN 13432 standards
These not only ensure you’re using credible products but also help you stay in line with packaging regulations.
5. How to Educate Your Customers
One of the biggest mistakes brands make? They forget to tell customers how to dispose of the mailers. Just saying “compostable” isn’t enough.
Make it clear whether it’s home compostable or needs industrial composting. Add disposal instructions right on the packaging to reduce confusion — and contamination.
Final Thoughts
Switching to compostable mailers is a smart move toward sustainable shipping — but only if done right. It’s not just about swapping materials; it’s about rethinking your packaging strategy, sourcing responsibly, and keeping both your customers and the planet in mind.
If you’re ready to make the leap to compostable mailers or need help finding the right biodegradable shipping packaging, Direct Source Procurement has you covered. We’re here to help your business go green — one mailer at a time.
