This is ThriveLeads opt-in plugin demo: Lightbox (popup window) with 2-step opt-in
It can be actually multi-step or multi-scenario form 🙂
To see a Lightbox form (popup window), start scrolling the page down (I’ve set up the form to show on scrolling 1% of the page)
Read my ThriveLeads review here.
Go to ThriveLeads website.