There are several ways you can collect email addresses. MailMaker provides a subscription module, we give you the code / sign up form to put on your website and you specify which list you want people to go into. Your site visitors can sign up for your email list and their addresses are automatically imported in to your MailMaker account.
You can also take a look at our list of ways to Grow your email list where we outline the many different list building options we can provide for you.