1. AWeber You can send standard e-mail newsletters, include a signup form on your website, create autoresponders, and turn your blog’s RSS into e-mail. They also have analytics built-in and functionality that allows you to integrate your list with your shopping cart.

3. benchmarkBenchmark
This service allows you to send e-mail campaigns, create website signup forms, manage an unlimited number of contacts, and view real-time reports. You can also create and customize polls and surveys.

4. boomerangBoomerang
You can use HTML templates or create your own, manage bounces and view extensive click-through report. This service also allows you to send faxes and letters in addition to e-mail.

5. brontoBronto
With this service you can create messages using the WYSIWYG editor, HTML, text editor or import from a web page, send e-mail-based surveys, and get detailed reports. You can also download the reports into Excel.