This initiative had the objective of choosing two environmental sustainability projects, one national (Portugal) and one international, which were later supported by CTT through the compensation of the greenhouse gas emissions associated with the transportation and distribution of CTT Expresso.

In addition to submitting and registering the votes, the application also provided all available information on each of the four projects submitted to a vote, as well as
allowed the user to share their favorite project. Each user could vote in two projects: one national and one international, being his choice totally free.

Several editions of this initiative have already been carried out since the backoffice of the application allows easy reuse.