One of the best products to stay in touch with our clients. (Of course, there are much more - and robust, too - however, InfusionSoft.com still ranks pretty high overall.)
The InfusionSoft.com provides a solution that is not so expensive (as per one of the reviews) and have all the required features for the automation.
Based on the need for automation, it seems there is no perfect solution that provides good features at reasonable price. InfusionSoft does.
Let's talk about bad and ugly of InfusionSoft in next few reviews when time permits.