Ask:HN: Collecting email addresses from a niche group

Hi, I want to start one Appsumo(or Groupon) like web portal which will try to provide ridiculously cheap deals on instruments and lab kits to a bunch of people in a particular niche. Say for the people who are in universities and Govt. organizations doing physics and astronomy. However, I have no technical background(coding) for launching a good landing page which can collect email address from these niche groups. Also I have no business experience how to collect enough numbers of email address to start with.<p>So here are my questions. 1. How do I go out and collect large number of email addresses from a particular niche group? 2. Should I go with any landing page template off the shelf to test the idea or hire a freelance developer to do it?<p>Any suggestions/feedback is highly appreciated. Thanks.