Ninja Popups combines a professionally designed popups to convert visitors on your site/blog into taking an action whether its subscribing into your newsletter, offering a discount/coupon for leaving customers, or locking content until they share you will increase your subscriber count and social signal of your site/blog.

Demo:

https://tinyurls.ca/YBgFu

https://mega.nz/#!7n5lUQzR!oyyzNpDNVUJiwpoCtd76oWuKbKEZ4jgkqTjET-hU3k4

http://uploadseed.com/K4

https://www28.zippyshare.com/v/t30FdlZ2/file.html