So ask yourself, is yours an expensive course that needs a lot of credibility to convince people to purchase it? Is it a free course you are launching and so may need less information and more hype and emotion? Is it a course series you are trying to encourage a commitment to? Are you one Udemy course among 100 competing courses on the same topic? Are there obvious challenges or objections that people will have to taking your course, such as a high price or hard to achieve objectives? Are you in a niche market and therefore need to really work hard to keep anyone remotely interested in your topic in your sales funnel?
The truth? People are smart. They're not simply going to buy anything from anyone unless they feel there's an immense amount of value to be had there. Thus, your funnel needs to built that value and bake it in through a variety of means. But most importantly, you have to create a strong bond with your prospect, and that happens by being relatable, honest and transparent in your email warming sequence.
Principle of commitment & consistency -- When people commit to something, they're far more likely to purchase from you. That's why getting them to agree to something like a free + shipping offer or by agreeing with something you've said in some way. This is a powerful principle in sales and if you pay attention to some of the best marketers in the world, you'll notice that they work fervently to get your commitment to something, even if it's very small in the beginning.