Email marketing is a powerful tactic for many small business owners to promote their products and improve sales. Emails can be created and distributed without incurring much cost. It can even be customized for group of customers to ensure you target the right group. The problem is customers are bombarded with emails like never before. They have limited time and attention span to open, let alone read the email. So how do you grab their attention and make them open the email. The key is what you put in the subject line. Boring subject lines that put readers to sleep will never make it to the content. Use the 10 tips below to create attention grabbing subject lines that will compel the reader to open the email.