This extension is an extremely powerful tool for building interest with whatever product or service your site offers. Once you get the newsletter configured on your site you can set the frequency of the emails to be delivered individually to your new site's registered users based on their registration date. There are several delivery options and the component's developer team is responsive to any questions you may have along the way. Their most recent update includes an unsubscribe link for members who may lose interest. Great product, up to date and shows promise to continue to grow with new updates and features.