<prompt> Translate the following text to SwahiliPostal Service, which is not subject to the travel rules that apply to most federal agencies--said that the Service does not prohibit its employees from making personal use of the frequent flyer miles received on official travel.  <response>: Huduma ya posta, ambayo haijalazimika kwa sheria za kusafiri zinazotumika kwa mashirika mengi ya shirikisho, ilisema kwamba Huduma hiyo haizuii wafanyikazi wake kutumia kibinafsi maili za kuruka mara kwa mara zilizopokelewa kwenye safari ya rasmi. 