<prompt> Translate the following text to EnglishKwa upande mwingine, kazi zaidi ya uwezekano wa kuturuhusu kuendeleza, kwa asilimia kubwa ya barua ya DC ya nje, 1 makadirio ya gharama za posta za ndani ambazo zingetokea ikiwa Huduma ya Posta ililipa posta ya ndani badala ya ada ya terminal na 2 mapato ya posta ya nje yanayohusiana na mtiririko huo wa barua.  <response>: Second, further work would likely allow us to develop, for a higher percentage of outbound DC mail, 1 estimates of the domestic postage costs that would be incurred if the Postal Service paid domestic postage instead of terminal dues and, 2 the outbound mail revenues associated with such mail flows. 