Smith, AustinSpangler, EmilyVaughan, TaylorUser Services & Resource Sharing underwent a 4-month long process to delete the UPS address book and import an updated address book. In this presentation, we will discuss the problems that sparked the discussion, the solutions we found effective, and how other libraries with large mail volume can benefit from "de-cluttering" their UPS address book.en-USups, shipping, ill, interlibrary loan, logisticsPresentation