<prompt> Translate the following text to EnglishHuduma ya posta imekubali kwa njia ya wazi kwamba hakuna uchumi mkubwa wa kiwango katika kazi za usindikaji wa barua na usafirishaji katika muundo wa kiwango cha Huduma ya posta.  <response>: Postal Service have implicitly recognized the absence of significant scale economies in mail processing and transportation functions in the Postal Services rate structure. 