Reddit reviews Lean Customer Development (Hardcover version): Building Products Your Customers Will Buy

You need to do customer development, check out books like "The Mom Test" and "Lean Customer Development". But before your prospective customers will want to talk to you you need to get some credibility. Try to create some content that solves problems that they are aware of, then you'll be able to talk with them.

Hyperping looks very professional and it definitely solves a problem for people with websites. But still no matter what, you should not just think "anyone with a website" is my target customer. You need to do the work to dig deeper and discover the real problems different website owners have related to what your product is seeking to solve. And the only way to do this is to talk to customers. Interview them. You are an amazing developer. I wish you the best. Read this book, it will help you. https://www.amazon.com/Lean-Customer-Development-Hardcover-version/dp/1449356354
If you look at how many email marketing software businesses are out there, the ones that are doing well are solving email problems for specific types of businesses. Email marketing for bloggers (www.convertkit.com). Email marketing for eCommerce websites (www.klaviyo.com). Now www.activecampaign.com is the new cool kid on the block. They solve very different problems when it comes to email marketing. Hopefully you will find the right niche for Hyperping and then people will happily pay you handsomely.

Product dev dictates what can be bought and when, customer development dictates whether it will. We seem to be wired to want to skip this process and rely on intuition which likely causes the disgusting failure rate of new products/businesses. See this book: https://www.amazon.com/Lean-Customer-Development-Building-Customers/dp/1449356354/ref=sr_1_2