Yes, they work and people do actually check their emails. Even if you have a 20-30% click rate, that's 30% of people that may read your headline, click through to your blog post, product announcement, etc. If you're smart about your strategy (don't spam, think twice about when to send a mail, lead with interesting content, visually appealing), a mailing list can be a huge asset to any business. People tend to not wan…
Normally, click rates are more like 0.1%. But it's also about brand recall. Having someone's email address lets you put an ad (subject line) in front of them for almost free, as often as you want, without having to go through the algorithms of the social networks.
From all traffic channels Newsletters are my most favorite ones.