Email Marketing and Email Automation
Researches show that it takes a client seven times to see your brand until he makes decision. Smart email marketing can make the difference.
You don't want to overwhelm your subscribers and you don't want to be spammed. Think about it: You get those emails all the time? From all those that you delete without opening, sure you have that one email list that you actually open and read. Why? Because that email is relevant to you at this time. That's the art of targeting the right audiences. Getting the leads, until they become customers.
Email Automation is the process of structuring your email presence in a way that major parts of it will function automatically, by themselves.
You can welcome a new user automatically, or send instructions exactly two days after the product has arrived, you can notify when your technician is around or you can have automatic emails sent to your clients asking them to review your business. It takes time, but eventually you can have "this online pain", work by itself
Read more about email marketing here