1. The subscriber of your newsletter will focus mainly on the subject line of your newsletter, so try to differentiate yourself from your competitors by drawing attention to it.
2. Find out what the right style is for the text of your newsletter and what is most catchy to they eye of your reader. Use short and direct sentences to summarize your services or products.
3. Always include a picture or multimedia content. Besides the title, images are the next thing that gets a reader's attention. If it is not catchy or interesting enough, most likely your audience will not read it.
4. Update the information in your newsletter frequently, that way you can attract a new audience and you will keep the existing ones excited about reading your communications. Do not forget to correct errors if any.