Of course, email marketing is very helpful in terms of getting instant result into your business, if you are doing email marketing, make sure you are working on list building first as this is very important thing today I would say.
The thing to remember about email marketing is that it's a relationship business. It's all very well having a list of subscribers but unless you build a relationship with them over time through regular email newsletters filled with valuable content you have no chance of being able to market to them. By all means recommend products to them from time to time but your long-term revenues will depend upon the trust you can build with them first.
Email marketing is the process of attracting your targeted audience directly through mail. Email marketing is an inexpensive way of marketing in compared to another types of marketing. This is a simplest way for engaging, acquiring, and retaining customers to help your business growth.