Hey HN, I just launched <a href="https://PostalAgent.com" rel="nofollow">https://PostalAgent.com</a>, a site that lets you easily send highly targeted postcards to specific neighborhoods.<p>I originally built this site 5 years ago but shut it down when my full time engineering job became too demanding, but recently I did a full rewrite with many new features.<p>To start you can select an area using a City, State, or even by circling specific areas on a Google Map. Then, you can refine your results and filter on specific demographics, like household income, home value, rental status, etc<p>You can also search for Businesses rather than consumers, and even filter by franchise type, presence of email, IRS tax code, Franchise Type, etc.<p>I was able to get a few clients signed up very quickly, mostly home services type businesses and real estate agents, but I think it could be used by many types of businesses. I have a few customers that are only using the mailing list feature without sending postcards, likely for cold email or other marketing outreach.<p>I'm looking for a bit of feedback from the community.