CFR›Title 39›Chapter I›Part 122 ContainsSections 122.1–122.2CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 122—SERVICE STANDARDS FOR MARKET-DOMINANT SPECIAL SERVICES PRODUCTS Sections 122.1 § 122.1 Ancillary special services. 122.2 § 122.2 Stand-alone special services. Authority39 U.S.C. 101, 401, 403, 404, 1001, 3691.Source72 FR 72228, Dec. 19, 2007, unless otherwise noted. Previous 121 Part 121—Service Standards for Market-Dominant Mail Products Next 211 Part 211—Application of Regulations