You might wonder why it’s a good idea to build a list. After all, it probably seems like a lot of work to find prospects, get them to accept emails from you, and find new things to send out to them on a regular basis.

You might also think it will take a lot of hard work to get people to buy. You know that you can’t just send them low-grade content and expect them to buy simply because you sent them an email.

And if you think these things, you’re right: building a...