Nowadays there's a saying: "If you're not social, you don't exist!".
Sounds scary, but it's just about how things are. Traditional approaches don't work anymore. Users now have a voice, and if they like it or don't' like it, they'll speak about it. Email marketing has evolved too. The communication was already bi directional (most of the times). Now it's even more. Users talk about you, about your product, about your service. Now they can do the same with your newsletter.
Newsman App and it's baby service NZ.ly (url shortner) offer full integration with:
Placing Like, Share, Comment buttons in your newsletter content is as easy as using a ##NEWSMAN:FB_LIKE#tag.
We then show you in a nice way what users did with your content in Social Media: