What is List Building? List building is the process of building a mailing list and this is something that any business or marketer should be adept in. So exactly is a mailing list? That would be a collection of e-mails that you will acquire through a website and/or through other means and which you can then use in order to promote and sell products.

The great thing about these lists is that they consist of people who have willingly given you their e-mail addresses and thus given you permission to contact you. They will have visited your website or blog, so you know they're interested in your niche or whatever it is you are trying to sell.