Small businesses can benefit greatly from email marketing due to its efficiency and ability to build credibility. To start, businesses should build an email list by capturing leads on their website. They should then develop a unique brand identity through regular email updates. Additionally, businesses can position themselves as experts by providing valuable, unique content to subscribers. Email marketing allows businesses to connect with customers regularly at a low cost compared to other marketing methods like direct mail or television ads. It helps small businesses establish name recognition and trust over time.