<prompt> Translate the following text to EnglishKundi moja kubwa ya wajumbe wa barua ambayo wanachama wake watanufaika sana na mapendekezo ya Tume, wajumbe wa magazeti, walionyesha katika taarifa ya vyombo vya habari kwamba ongezeko la jumla la barua ya darasa la kwanza lilikuwa ndogo sana kuliko ongezeko la wastani la barua wanachama wao hutuma.  <response>: One rather formidable group of mailers whose members will benefit mightily from the Commissions recommendations, the periodicals mailers, pointed out in a press statement that the overall average increase for First-Class mail was much smaller than the average increase for mail their members send. 