<prompt> Translate the following text to EnglishBaadhi ya wajumbe wa barua wamegundua kuwa kugeuza barua kwa kampuni ya presort, ambayo inahitaji muda wa kufanya kazi ya ziada, husababisha hasara ya siku moja katika huduma.  <response>: Some mailers have found that turning the mail over to a presort firm, which requires time to do the additional work, results in a 1-day loss in service. 