<prompt> Translate the following text to SwahiliFurther, if the mailbox rule were maintained, only one person will pick up an outgoing letter placed in the mailbox.  <response>: Zaidi ya hayo, kama sheria ya sanduku la barua ingehifadhiwa, mtu mmoja tu atachukua barua inayotoka iliyowekwa katika sanduku la barua. 