Feature Request: email locker

Nice plugin, thank you!

Although I really would love to see an email gate within the options. So visitors should give their email adress for the content below (of course it would need some kind of email verification). I know there are some emails to download plugins, but none of them (well none of what i tried) could do that if the visitor shares the content after unlocking it, then his friends (who sees his shared link) arrives at the same page but _without_ the locked content. I hope it makes sense 😀