Design an omnichannel retention strategy to provide consistent customer experiences across all touchpoints. Identify key channels such as [website], [mobile app], [social media], and [email] and describe how they should work together to engage customers at different stages of the buying journey. Propose integration strategies for each channel to ensure seamless transitions between online and offline interactions. Detail how this omnichannel approach will drive customer loyalty, reduce churn, and increase repeat purchases. Track key metrics such as [retention rate], [channel effectiveness], and [cross-channel engagement].