An organizational unit postal operator, or agent in the mail, which can be included a contract for the provision of a postal service or who served on the recipients of mail or a sum of money specified in postal communications, or other isolated and identified by the postal operator where you can enter into a contract for the provision of a postal service or pick up the mail or an amount of money specified in the transmission post. Under the law "Postal Law", which entered into force on 1 January 2013 there has been a liberalization of the postal market, thereby Post Poland SA ceased to be a public operator (abolished the monopoly of the Polish Post for shipping to the 50 grams), at the same time for the next three years will perform as the so-called assigned operator (for example, the privilege of providing official shipments, pensions).