Optin Lock Email Validation

After you created your Optin Lock, if you want to validate email entry you just have to make sure this checkbox is marked -

Viewer will not be able to enter a fake email and continue to watch your video, if they try to do that an error message will appear warning them about the irregular sign up.
This validation form can secure you valid emails up to 95%.

To see how you can create an Optin Lock from scratch see this article -  http://help.vooplayer.com/article/450-opt-in-to-watch