WordPress Newsletters and AutoResponder Plugin will help you to notify all subscribers about new posts, downloads and their updates. Create and schedule newsletters, automated emails, post update notifications and autoresponders. Capture subscribers with appealing signup widgets, Import & Export Subscribers. An easy to use newsletter solution for WordPress and WordPress Download Manager.
Please check here ( http://www.wpdownloadmanager.com/docsfor/wpdm-newsletter/ ) to get clear concept about this plugin.