<prompt> Translate the following text to SwahiliThe Postal Service complied with this requirement early in 1973, and a Domestic Mail Classification Schedule recommended by the Commission became effective on July 6, 1976.  <response>: Huduma ya Posta ilifuata mahitaji hayo mapema mwaka wa 1973, na Mpango wa Uainishaji wa Barua za Ndani uliopendekezwa na Tume ukaanza kutumika Julai 6, 1976. 