www.imnicamail.com (Not Free - But inexpensive): Looking for an inexpensive Autoresponder? That too starting from $3 with a delivery rate of 94% - that's close to the top two services! Then, ImnicaMail could be your choice. All paid plans do not insist on a forced double opt-in. Comes with full-fledged features like Autoresponder, Survey, Email Builder, Email Analytics, Website Integration, Email Templates, Unlimited email sending and more.
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.