A recent collaborative project between the UPU and the United Nations Environment Programme (UNEP) has demonstrated that postal networks can serve as sustainable infrastructure, contributing significantly to global sustainability objectives.

The case study titled "Greening First and Last-Mile Delivery Infrastructure in Malaysia" underscores the pivotal role of Pos Malaysia in supporting the nation's climate commitments and ambitious goals to reduce greenhouse gas emissions. This study highlights Pos Malaysia's initiatives in fleet electrification and overall sustainability, positioning the postal service as a key contributor to Malaysia's environmental strategy.