Someone voluntarily gives you their email address either online or in person so you can send them emails. They may pick certain types of email content they wish to receive, like specifically requesting email alerts when new blog posts are published. Opt-in email addresses are the result of earning the interest and trust of your contacts because they think you have something valuable to say.
The downside of just making offers is that they’re not useful on their own. People on your list won’t receive any value from you unless they buy what you’re promoting, so they have little reason to stay subscribed. That’s why this email marketing strategy doesn’t work alone. And it’s why many e-commerce sites struggle to keep people interested. There are a few exceptions (e.g., Groupon) that rely entirely on making offers—but then the reason people joined the list was specifically to receive those offers.
While email marketing ROI is higher than that of social media, you’d be remiss if you’re not combining both. While keeping your brand top of mind is an obvious benefit of using email and social, the crucial data you can derive from both enables you to hyper-personalize your messaging and content. This makes integrating both an integral part of your social media strategy and vice versa.