Ever wonder why you get so much spam in your inbox? It’s because even now in the age of social media, email marketing is still an incredibly powerful and profitable way to generate sales. Nearly everyone has email and checks it at least once a day. If unsolicited spam emails are generating profits, imagine how much more value comes from building a targeted list of email addresses for your particular niche of products. Targeted email marketing can generate a lot of sales when launching a new product or offering a discount on an existing product. You can also notify existing members about new content so they know you are improving your site for them.