The title of email marketing manager is obsolete in my book. To me the word marketing is a word which reeks with the act of engaging in a monologue with the customer. Wikipedia defines marketing from the AMA as "the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large" The definition goes on to say that Marketing practice tends to be seen as a creative industry, which includes advertising, distribution and selling.
Therefore I would like to suggest that anyone that is currently employed as an email marketing manager, that you petition your current employer for a title change to either an Email Dialogue Manager or an Email Engagement Manager. I think once you are called what you should be doing, some of you will start to act and execute more on what we SHOULD be doing.