U.S. Postal Service proposes cuts that would slow mail delivery - LA Times The U.S. Postal Service said a plan to save $2.1 billion a year and fend off possible bankruptcy would effectively put an end to almost all overnight delivery of first-class letters and postcards. Delivery would take at least two to three business days. The postal service's decision to relax delivery standards for first-class mail follows its determination in September to close 252 mail processing plants, about half its total. Altogether, about 28,000 employees would lose their jobs.