can you compost compostable mailers?
Only if certified and locally accepted — most compostable mailers are industrial-grade PBAT/PLA film, though some earn home certification.
breaks down in 3–6 months in an active home pile for home-certified film; faster industrially
which bins can take it?
- hot pile caution
- cold pile no
- worm bin no
- bokashi no
- tumbler caution
- curbside caution
- hot pile: Home-certified mailers only — cut into strips, bury in the hot zone, and expect film scraps at turning time.
- tumbler: Strips of home-certified film only, and the batch will finish before the film does.
- curbside: Film wraps around sorting equipment, so many programs refuse mailers even when certified — ask first.
why?
Flexible mailers blend PBAT — a soft copolyester that degrades at lower temperatures than PLA — with PLA and cornstarch, which is why film products sometimes earn TUV 'OK compost HOME' status while rigid PLA never does. Home certification still assumes an actively managed pile; in a dormant winter bin the same mailer sits glossy and whole. Municipal programs add their own hurdle, since stray film jams screening drums.
how to prep it
- Peel off the shipping label and any adhesive strip — both are plastic-backed
- Cut the mailer into strips an inch or two wide
watch out for
- The printed label, tape, and tear-strip adhesive are not compostable even when the mailer body is.
- An unmarked gray 'eco mailer' with no certification logo is safest treated as plastic film and trashed.
often confused with
- Recycled-Content Poly Mailers — Mailers advertising recycled plastic content are still conventional polyethylene — greener sourcing, same landfill-or-store-drop-off ending.
quick answers
What do I do with the shipping label on a compostable mailer?
Peel it and trash it — thermal labels are plastic-coated and their adhesive doesn't compost. If the label won't peel, cut that panel out of the mailer and compost only the clean remainder.