AWeber

• Provides unlimited autoresponders, follow-up emails, newsletters, and campaigns
• Converts subscribers into customers without intervention from you
• Automatic undeliverable email handling, ad tracking features, and opt-in forms
• Free training videos, unlimited customer support, and a 30-day no risk money back guarantee

Constant Contact

• Email marketing service that helps small businesses, associations, and nonprofits connect with their customers, clients, and members
• Quickly and easily create great-looking html emails from over 300 templates and 40 survey templates or upload your own with step-by-step wizards
• High email deliverability rates due to strong partnerships with ISP
• Free 60 day trial; track performance of email and survey results in real time

IntelliContact

• Combines sophisticated features such as surveys, autoresponders, and RSS feeds into one easy-to-use all-inclusive product
• Use one of its 300+ professionally designed email newsletter templates or one of your own for permission-based email marketing campaigns
• Has whitelist agreements with major ISPs so clients can enjoy industry-leading deliverability
• Track the performance of your email blasts at a glance charts and graphs populated in real time