This bachelor’s thesis deals with a retrospective of the gradual and controlled opening of the Austrian postal market and the resulting impact on consumers, the authorities' structure and operators of postal services, which have already begun with the outsourcing of the postal sector in the field of public services. Once much discussed were the changes that the postal market has experienced in recent years, but now we have got used to them. Although there are still critical voices today. They are, on the one hand, opposed to the outsourcing of postal services from the public services sector, which aimed at reducing the budget deficit of the public budget, and, on the other, against the opening of postal markets, which often resulted in negative effects instead of improving quality of service. The aim of the bachelor’s thesis is to investigate the extent to which the outsourcing and liberalization of postal services to the EU member state of Austria have actually been effective, in particular with respect to postal service operators, the authorities’ structure and consumers.