I have a list of people who sign up for informational newsletter (high value for niche). I want to give away a gift after the reader has received 6 mails, in a fashion like "advertise our newsletter and download gift". I know that there are tons of plugins that hide content and reveal it after a socialmedia action. Problem with that is, that they share (or point to) the "free gift" page, that people should only get after they signed up and read some mails (trust!). I want them to share my signup page, and then give them the downloadlink.
Any ideas??? Plugins, Procedures? Or Do you have other ideas...?
thanks in advance , stefan