Revcontent email optin

Hei everyone,

I figured native ads would be perfect for email optins in exchange of free ebook or anything of the sort.
Waiting for my ads to be published right now. For those of you who are crushing it like that, what is in your opinion the most important thing to keep in mind when doing email optins with native ads?

Thanks,

OP I am interested to know how this will end up for you. I never tried native ads for email optins.