<prompt> Translate the following text to SwahiliThus, the diversion of bill-paying by mail to other methods of bill-paying is having more impact on single-piece than presort First-Class Mail.  <response>: Kwa hivyo, kugeuzwa kwa kulipa bili kwa barua kwa njia nyingine za kulipa bili kuna athari zaidi kwa kipande kimoja kuliko barua ya darasa la kwanza. 