How can you effectively gather and reach out to email contacts for a niche business?

Neil Patel recommends finding groups related to your niche (like bicycle shop owners) and scraping their information from platforms like Yelp. He suggests using Mechanical Turk to pay people a few cents per contact to build your email list. Once you have these targeted contacts, send mass emails highlighting how your product can help their business increase revenue through upselling. Patel shares a real-world example where he used this approach for a friend's cleaning business, scraping approximately 17,000 emails from Yelp and generating over half a million dollars in sales over the following 12 months. Though unconventional, this growth hack can deliver significant results.