Search ‘e-newsletter software’ in Google and many programs come up. The two most popular seem to be MailChimp and Constant Contact. But, do some research to find the one best suited to your needs and skill set. For example, see this article on MailChimp v. Constant Contact.
HTML emails are a great way to update folks about you and your work. You do not have to be web savy. Most of the generators provide templates and a design manager to help anyone create their own interactive email, as well as manage subscribers, track performance and schedule campaigns. There are free and paid services.