<prompt> Translate the following text to SwahiliThe second section addresses the same topics in connection with Negotiated Service Agreements NSAs, so-called niche classifications, which are special service and rate arrangements negotiated between the Postal Service and a particular mailer or groups of mailers with features tailored to their use of the postal system.  <response>: Mkataba wa Huduma ya Ujumbe NSA ni mkataba wa huduma maalum na mpango wa kiwango cha huduma kati ya huduma ya posta na wauzaji maalum wa posta au makundi ya wauzaji wa posta na sifa zinazolingana na matumizi yao ya mfumo wa posta. 