You should focus on customer acquisition, nurture, retention, and upsell. Email marketing is just one tool that's used in a specific way depending on your indu

You should focus on customer acquisition, nurture, retention, and upsell. Email marketing is just one tool that's used in a specific way depending on your industry, product, and customer base. Always focus on improving the product, but don't do this in a vacuum. You need to ask customers and potential customers and customers of competitors about their problems.