If you are looking for a easy to use reliable email newsletter campaign manager we would highly recommend Aweber, we have used their service for over a decade without any glitches and sent millions of emails across 23 different emails lists using their services.

The Aweber system allows you to collect email addresses manually or via an opt-in form on your website and then follow up with those leads over and over again with pre-written emails that go out to your different email lists once a day, once a week, once a month, or however often you would like to be dripping on them.  This can be used to share evergreen videos, whitepapers, articles, or insights you have on your niche area of expertise.  Here is where you can learn more: http://www.aweber.com/easy-email.htm?id=301355