Building forms is available in every piece of software I use to create websites (PC based) and none of these things are a consideration. I have to kindly and respectfully disagree. All of them allow me to place text, edit boxes, radio and check boxes, drop downs and other form elements followed by a submit and reset button. They do not require any coding to send the email to an email address - it's built in - and my guess is that its a simple php forms mail script.
Surely you could include this into Hype? Considering the 'Pro' moniker, I would expect the addition of form elements (and yes, I did upgrade to Pro).
I DESPISE free tools like Google Forms and Wufoo - they make things too complex and gather data that you would never want gathered. I would much rather keep it simple and in-house, so to speak.
I tried editing that form inner HTML example and I can tell you that making it responsive would be annoyingly hard. It would be a little easier to create the form in form creation software or website software in multiple sizes and then copy and paste the HTML into a inner html control in Hype for each responsive size. It would be MUCH easier to just drag and drop the form elements in Hype and create the form for each responsive size.
Please add Form elements, because I would LOVE to use Hype as a legit website creation software and like it or not, forms are a MAJOR part of almost all websites.