<prompt> Translate the following text to EnglishKwa upande mwingine, asilimia kubwa ya mapato ya Poste Italiane hutengenezwa na barua iliyotolewa, na hii itasababisha cream skimming kuwa na athari kubwa kwa gharama zake za kitengo.  <response>: On the other hand, a greater percentage of Poste Italiane revenue is generated by delivered mail, and this would cause cream skimming to have a greater impact on its unit costs. 