What to include in your newsletter … a great, catchy name. To get your customers attention, focus on quality content. For instance, you want articles to be relevant and informative. Try not to focus solely on your business and sales goals. By this we mean, remember the 80/20 rule: 80% education and entertainment and 20% sales. Use your customers and include testimonials. Including a call to action is important. So remember to link to your website and social media sites! Don't forget your contact information like your address, phone number and website. Believe it or not, many businesses often leave their contact information out.