In today’s competitive business landscape, it is becoming increasingly important for companies to focus not just on making the sale, but also on building lasting relationships with customers. Post-sell, or the process of continuing to engage with and support customers after the sale has been made, is a critical component of building long-term relationships and ensuring customer satisfaction. The Sandler Submarine technique provides a valuable framework for implementing effective post-sell strategies. The Sandler Submarine technique is based on the metaphor of a submarine, with four distinct levels of engagement: the surface level, the periscope level, the conning tower level, and the deep dive level. Each level represents a different stage of engagement with the customer, from initial contact to ongoing support and follow-up. At the surface level, the focus is on making the initial sale and establishing a basic level of trust and rapport with the customer. However, it is at the periscope level where the post-sell process truly begins. This level is all about gathering information and identifying the customer’s specific needs and pain points. By asking open-ended questions and actively listening to the customer, salespeople can gain a deeper understanding of the customer’s goals and challenges, and begin to develop a more personalized approach to post-sell engagement. The conning tower level is where the relationship-building really begins. At this stage, the focus is on providing ongoing support and follow-up to ensure the customer’s needs are being met and that they feel valued and supported. This can include regular check-ins, providing additional resources or support, or simply being available to answer questions and provide guidance. Finally, at the deep dive level, the focus is on truly becoming a trusted advisor to the customer. This involves going beyond basic support and engagement and taking a proactive approach to helping the customer achieve their goals and overcome their challenges. This may involve providing customized solutions, connecting the customer with other resources or experts, or simply being a sounding board for their ideas and concerns.