The USPS's financial outlook has deteriorated as customers have shifted to electronic alternatives. Mail volumes have declined over 20% since FY 2006 and are expected to continue declining. To help its financial outlook, in March 2010, USPS presented a detailed proposal to move from a 6-day to a 5-day delivery schedule. USPS projected this would save about $3 billion annually and reduce mail volume by less than l%. This proposal factors in widespread changes to USPS's workforce and networks. This report assessed: (1) USPS's cost and volume estimates and the operational impacts associated with its 5-day delivery proposal; and (2) the trade-offs and other implications associated with this proposal. Illus. A print on demand report.