Design a personalized marketing campaign aimed at retaining [customer segment] over the next [timeframe]. The campaign should utilize [customer data] to segment the audience based on behaviors, preferences, and purchase patterns. Propose a content strategy that includes email, SMS, and push notifications to deliver tailored messaging at key points in the customer journey. Outline the use of dynamic offers, loyalty rewards, and exclusive content as retention tools. Ensure all materials and communication are aligned with brand voice and values. Measure the success of the campaign with specific metrics such as [customer engagement rate], [conversion rate], and [campaign ROI].