Pre built framework to test product idea quickly

I am looking for a pre canned framework/service/idea that would allow me to quickly spin up a site that could support a marketing campaign. The idea is that I could market a product, and users could land on my page , and submit their email, when the site relays a message saying something like, (Out of product, enter email to be notified when in stock). I know this is something that can be developed, but looking to see if there is anything before I pursue that path. Thank you in advance.