I've used Constant Contact as an e-mail marketing tool. Through the online software, you can design professional e-blasts with pictures and links. Once you send your e-blast, the program will take care of the reporting. You'll be able to know who opened your e-blast and what they clicked on. Check out Ripley Designs Blogspot "Get 'Em Done Right" and Constant Contact for more information. You can even work with companies who will manage your constant contact account for you. One company I know of is Ripley Designs. Good luck!