Enewsletters are still important because email lists allow you to regularly contact subscribers who have opted in, delivering on the content and frequency promised to keep the emails relevant. MailChimp is a popular tool for creating and sending enewsletters, as it offers hundreds of templates, is free for up to 2,000 subscribers, and integrates with social media and websites to help grow subscriber lists. The key is adding signup forms in various places to attract new subscribers to your email list.