As someone who's done some email marketing and sales, I would avoid cold emails as a starter tactic. I'd start off by leveraging platforms like LinkedIn Groups

As someone who's done some email marketing and sales, I would avoid cold emails as a starter tactic. I'd start off by leveraging platforms like LinkedIn Groups, Facebook, Twitter, Quora, etc. Rather than start with email, start by engaging people in low-investment places where they're actively looking for the type of SaaS you're offering. It's a little more time-consuming, but it doesn't get you blacklisted by email servers.