If your newsletter is purely informational, you might choose to end it with a “thank you” or a “read more” link. However, if your newsletter also offers products or services for sale, it’s important to include a “buy now” button at the end. Put your contact information and the product’s price in close proximity to each other.
Also, make sure that your email address is easy for readers to find. Include it at the top of the first page of your newsletter, in the “About This Newsletter” section, or in bold font on the home page.