There is a an old advertising saying that goes; "I know I wasted HALF of my marketing budget - I just don't know which half!" With any marketing campaign knowing what is connecting with your target market is key - with email marketing that's easy :)
Not only does email marketing provide invaluable analytics to help you streamline you marketing but according to research by the Direct Marketing Association (DMA), email marketing consistantly out performs all other direct marketing channels.
Just like your own business - over the years you'll have learnt techniques that made you more efficient with better results and at PS that is no exception. When you use PS to manage your email campaigns you'll benefit from years of experience - ensuring maximum results with the minimum amount of hassle.