Would it shock you to know that almost no one who signs up for your lead magnet will actually open it?
Go check your analytics right now. How many people landed on your opt-in page, signed up, opened your delivery email, and clicked on the link? If you have a course as a lead magnet, how many people kept clicking on each email or course module?
Did you notice that number goes down the further along your sales funnel they travel?
Most of the time, even when they do click on the lead magnet link in your delivery email, they still do little more than scan it or...