The trial allows customers to drop their soft plastics - including Australia Post plastic satchels - into a dedicated bin at the Post Office.

The plastic is processed by REDcycle and delivered to a manufacturing partner to be made into a range of recycled products.

Australia Post Executive General Manager Community & Consumer, Nicole Sheffield, said the trial was another way Australia Post was using its national network to give more communities access to services.

"While many Australians have fully embraced soft plastic recycling with REDcycle, not everyone has access to the service, which is why we have targeted selected Post Offices to help increase access," she said.

"There is growing interest and concern among the community surrounding plastics, so we're incredibly proud to be expanding our partnership with REDcycle and give our customers the opportunity to recycle their satchels and other soft plastics at the Post Office."

The in-store trial will run for a period of eight weeks, with the option to extend and expand to more Post Offices depending on customer uptake and feedback.

Founder of REDcycle, Liz Kasell, said the company is dedicated to offering regional communities an opportunity to return their household soft plastics to a drop off point.

"In the true spirit of partnership, we are grateful to Australia Post for providing the locations and recovery network required to make this vision a reality," she said.