I have an idea for a startup. I want to write up a few paragraphs explaining my idea and have a link that says "if your interested enter your email address here". An when I have the idea built, send an email out to each person who signed up.<p>I know there are site out there that do this, but I don't know what terms to put into google.
<a href="https://www.prefinery.com/" rel="nofollow">https://www.prefinery.com/</a><p>(And <a href="http://my.betali.st/" rel="nofollow">http://my.betali.st/</a> which itself is isn't launched yet and asks for an email address. How meta)
You might be thinking of a landing page, try that in Google, <a href="http://www.leadpages.net/products/" rel="nofollow">http://www.leadpages.net/products/</a> is a popular service for that but is paid.