This document discusses strategies for recovering lost customers. It begins with an overview of customer analysis, including calculating the costs of acquiring new customers versus retaining existing ones. Various approaches for recovering lost customers are then examined, such as personal appeals through phone calls, gifts, or visits, mass appeals through mailings and offers, or a mix. Specific tactics are provided like thanking customers for past business and offering discounts. The document also covers surveying lost customers to understand why they left and the likelihood of returning. The overall goal is to gain more customers than are lost by identifying valuable former clients and winning back their business.