If you want to get more opt-in email subscribers and more sales for your online business, then you will want to use email marketing. Email marketing is a great way to boost your overall profits, all while getting you higher conversion rates for your business. I like email marketing because it's something that you can rely on to have the most success as possible in your online business today. To start your own email newsletter and to gather opt-in leads, you will need something called an "autoresponder". An autoresponder is simply a program that automatically delivers email messages to your opt-in leads. All you have to do is fill it up with many email messages, then specify how often you want to your emails to be sent, and then just sit back and watch your autoresponder work for you.