One of the main changes with the implementation of the new Postal Law has been the elimination of the reserved areas, which used to be letters up to 50 grams, reserved by the DPO. The Postal market is now free in Poland.See for more detailed explanation: http://szulikowski.blog.onet.pl/2013/01/14/koniec-monopolu-poczty-polskiej-%E2%80%93-nowa-ustawa/The Act also implements directive 2008/6/EC; Directive 2008/6/EC amending Directive 97/67/EC with regard to the full accomplishment of the internal market of Community postal services