The main reason for the companies to start email marketing is that, it is cost effective process and the returns are high. Email marketing is considered to the most profitable business when performed in an authentic way. There are certain criteria to be followed in email marketing for attaining desired ROI. The most commonly asked question is what should I need to do to improve sales ratio? How to improve ROI? How to keep up reputation? Is my content good? How about the layouts and designs? Al...