Your welcome series is the first date of your email relationship. It's the first look into what they can expect from you: How you speak. What you like to talk about. What your shared interests are.
It sets the tone for the rest of the relationship and, if done well, can give them a good reason to want to read more of your emails.
If you're not currently emailing your customers on a regular basis, don't worry, we can get to that in 2018. I know you're busy right now and I wouldn't ask you to set up your email campaigns and flows when you have money to make.
But if you want to make sure that 2018 is your best year yet, start it with the momentum you're gaining now.
Sending marketing emails to your list is like flossing. You know you should do it. You own floss. Sometimes you put it in your toiletry bag when you go on vacation. But how often do you really use it?
But the reality is, no one is more likely to buy from you than someone who is on your email list.