Ezines & Newsletters are the same. I had personal experience with two. Aweber: This email marketing service is best used if you have seperate lists you track. Autoresponder is excellent for scheduling emails in advance. This system is not easy to move to with an established list, each person has to opt in again, per list. Offers a tracking of all emails. Constant Contact: This email marketing service is great for beginners and non-technical users. It's simple to export an existing email list. Very easy to follow the tracking of when emails are opened and when links are clicked. Surveys can be added for an additional costs. Images can be added for an additional costs.