I followed this https://docs.microsoft.com/en-us/aspnet/web-pages/overview/getting-started/11-adding-email-to-your-web-site

which works fine in a typical post action, but I want to use XHR or such to submit the basic HTML form and receive a callback message so it never leaves the page and I can update the user that the form was submitted successfully.

The benefit is that the form could run anywhere even if MVC 3 is not installed, and just let the processor on another server do the job.

Does anyone know where I would learn to do something like this?