Emails are an effective, easy, and great way for companies to improve customer retention. More than 60 percent of B2B marketers feel that email marketing is the best and most effective channel for revenue generation. It is hard to win new customers and also keep the ones you have. It can cost nearly 16 times more to acquire a new customer than to retain an existing one. Customer retention email marketing is a key strategy used to increase customer engagement and deepen the connection of customers with your brand. Emails are used by marketers for their customer acquisition, traditionally. Customer experience and customer service are necessary to focus and sustain the interest of customers. New customers are harder to convince and so one needs an effective marketing plan to convince them. Email marketing helps specifically with customer retention as it is a great way to strengthen bonds with customers. Instead of business owners relying on phones or events, sticking to email marketing can immensely help. This is where email marketing helps rapidly.