ZIP is an acronym in English of the Zone Improvement Plan (Plan of improvement areas) words adopted by the system United States post to identify the postal code (zip code) of the different locations and American cities. The term zip was chosen because it also means in English quot; go very fast quot; which suggests that the email is more efficient and travels faster when this code is used.Another example would be the English word zipper which means zipper or zipper closure (fast closer).