Hi!
One of the most popular topics that I teach is Mailchimp. I’ve been using it for nearly 10 years. (I just went and checked when I sent my first one out and it was in December of 2010!) Way back then there were other players that had similar and some even better options. Many consultants and coaches used Aweber and Constant Contact. I liked that I could use Mailchimp for free to start and that it wasn’t just a trial period- it was free if my list stayed under 2000. Since 2010, Mailchimp has added many more features and now I think it’s better than the competitors and worth paying for it if your list is bigger or you need some premium features.