Wanderlust World Wanderlust World The United States Postal Service (USPS) delivers mail to homes and businesses Monday through Saturday. There is no regular mail delivery on Sundays or federal holidays, though Priority Mail Express may be delivered on Sundays in some areas.
Mail is collected from post offices, processed at sorting facilities, transported via a fleet of trucks and aircraft, and then distributed by letter carriers along established routes. This daily operation ensures that letters, packages, and periodicals reach recipients across the country.