RT Journal Article SR Electronic A1 Madleňáková, Lucia T1 JF Doprava a spoje YR 2011 VO 7 IS 1 SP 67 OP 70 UL https://tac.uniza.sk/artkey/das-201101-0009.php AB The paper deals with establishing a methodology for evaluating offers postal services and establish the optimal product portfolio of postal services. The optimum range of postal services based on an appreciation of the requirements and preferences of individual subject categories postal market: customer - provider - expert.