If you promote the affiliate programs in Systeme Marketplace, you will have the choice to promote either the Opt-in page or the sales page.
Whether or not you will have access and the ability to see the leads’ email addresses depends on whether the product owner allows it.
If the product owner allows it, then the lead’s email that you referred will appear under the Affiliate Dashboard (from the navigation menu Dashboard – Affiliate dashboard)
If the product owner doesn’t allow it, then it won’t be shown.
Why is the leads’ email addresses not in the Contacts section?
The Contacts page only shows the leads or opt-in that you brought in via form subscriptions (i.e. your own opt-in form placed on the page).