www.aweber.com: Free Autoresponder for 30 days. One of the original Autoresponder providers! Also one of the best with a very reliable service at very affordable rates. This is a great option if you really want a professional Autoresponder that is affordable! Currently, they are offering a 30-day trial where you can test out the full features of the Autoresponder service for a month.
Even businesses with dedicated on-site IT staff have seen the wisdom of moving their email service. The advantages include per-person cost averages, cutting-edge security, cheap email storage, and simple ease of connectivity and deployment. While these advantages hold true for most organizations, there are not only exceptions but also hidden "gotchas" you should look for before selecting a cloud-hosted email provider.
MessageGears is a hybrid email marketing system that combines the security of an on-premises system with the scalability of the cloud. The service connects directly to any local or remote database, data warehouse, e-commerce system, or content management system. There is no need to extract, transform, or load customer data into the system or to move or replicate data. Features include subject line previews and testing, spam testing, and automation, drip and trigger campaigns.