He meant that the post was extremely important for the country to get through the pandemic.
Explanation:
Kosar recognizes that the post office needs a reform in its structure so that it can work more efficiently, however, it is not possible to belittle the work that the post office did today, after the pandemic spread with violence and online shopping has grown rapidly, already that it was not possible for people to go to the stores. In this case, he says that the country was only able to overcome the pandemic because the post office took responsibility and fulfilled everyone's deliveries, even with its troubled structure.