Constant Contact is a comprehensive email marketing service that allows you to create unlimited newsletters, sign-up forms, and landing pages. It offers over 100 modern and relevant templates to help you come up with engaging content and provides a wide variety of advanced features not usually found in the competition. Unfortunately, there isn’t a free plan that you can use forever, but Constant Contact allows you to test the service for 30 days for free with no strings attached. What’s more, the company offers a 30-day money-back guarantee, which means you’ll have 60 days to test the product before you make your decision.