Part 121. PART 121—SERVICE STANDARDS FOR MARKET-DOMINANT MAIL PRODUCTS

• § 121.1 - First-Class Mail.
• § 121.2 - Periodicals.
• § 121.3 - USPS Marketing Mail.
• § 121.4 - Package Services.

• APPENDIX

  • Appendix A to Part 121—Tables Depicting Service Standard Day Ranges