US 1 Discount MailNovember 7, 2016 in Florida by mfgadmin US 1 Discount Mail Open year round. Closed Monday and Tuesday. Open: Weds – Thurs 10am – 8pm, Fri – Sat 10am – 9pm, and Sun 10am – 7pm. Location: 18901 S Dixie Highway, Miami, FL., 33157 Phone: 305-234-2828