The first thing to do, of course, is consider whether you want to include auto responders in your marketing mix. You'll need to be sure to find an email marketing provider that supports auto-responder functionality (not all of them do, though Comm100 does support auto-responder functionality). Then, when considering developing an auto responder program, you'll want to consider all of the following points: 

Lead Qualification and Filtering is the process of determining whether a lead is ready to be passed on to sales based on things like customer demographics and behaviours. Some leads will be filtered out, because they are not yet at that stage or appear less promising than others – focussing on unqualified leads is a waste of time and resources. Customer relationship management (CRM) software can be used to track and evaluate leads before distributing them to sales.
Several vendors offer computer programs designed to assist businesses in lead generation. Ethics are an important consideration in the choice and implementation of such programs. The use of spyware, Trojans or other intrusive means of gathering information without the knowledge or consent of targeted individuals or entities is frowned upon. Mass unsolicited e-mail advertising (or spam) is also considered unethical by many, and it can result in electronic blacklisting.
All of great features you'll find included with your SendFree account are the result of a combined 16 years of email marketing experience. Two well known online marketers, Abbie Drew of DEMC E-Magazine and myself, Robert Charles run the service. When you have questions regarding SendFree, either Abbie or I will respond to you personally. You'll not be sent off to some unknown help desk whose staff doesn't understand SendFree or Net marketing.
If links and looks are set, begin interacting with the page. Abandon it, adjust the window size, convert. Are error messages appearing when they’re supposed to (if, for example, you don’t input all the form’s required info)? Is your CTA button working? If you abandon the page, are you retargeted with ads? When you resize the window, does your landing page respond accordingly?