<prompt> Translate the following text to SwahiliThese third-party sorters collect mail from mailers, sort and apply barcodes, and deliver the mail to the Postal Service for a portion of the discount.  <response>: Mashirika ya tatu ya kuchagua barua hukusanya barua kutoka kwa wajumbe, hukusanya na kutumia nambari za bar, na kusafirisha barua kwa Huduma ya Posta kwa sehemu ya punguzo. 