Use such things as a column or some other idea that invites the readers' comments or ideas. Whether it is offering different types of articles or offering new and different information, you must change the content of your newsletter to maintain the interest of the reader. However, changing content does not mean changing format. Don't get into the habit of changing the format of your newsletter. Create and maintain format guidelines.
Readers get accustomed to seeing the newsletter in a certain format.
Changing this format will too often confuse and annoy your readers. Whether you have 100 subscribers or 10,000, you must do your best to keep your articles and text clean and spell checked. If you offer referrals to another business, be sure that you are referring them to an honest and reliable business. Your newsletter is a reflection of your business. Never let the aire of dishonesty show its ugly face.