If you’re going to get in the habit of pitching often, try to put yourself in the reader’s shoes. Ask yourself if your messaging is consistent with the expectations you’ve set. As I said before, Amazon does this well because they send relevant offers based on my buying habits. Those that send blind offers are far more likely to lose permission to keep doing so.
If links and looks are set, begin interacting with the page. Abandon it, adjust the window size, convert. Are error messages appearing when they’re supposed to (if, for example, you don’t input all the form’s required info)? Is your CTA button working? If you abandon the page, are you retargeted with ads? When you resize the window, does your landing page respond accordingly?