Subscribe to Blog Widget

I know, not really a Trellis, Bedrock or Sage question, but I was hoping I can get some good tips from the pros that roam this forum. If you do not want to use Jetpack to add a subscription widget for users to subscribe to the blog of a site what would you use?

Does anyone have any plugins they can recommend? Plugins that allow users to get news when a new blog post is out that means. Not for subscribing to a newsletter done by MailChimp or Aweber. I need a widgets so users can get blog updates in their email box. And Jetpack is kind of overkill really…