Is BuzzStream right for my goals

I developed a GPT-Based software, specifically Word Express, an Add-In for Microsoft Word (desktop). I was recommended NinjaOutreach. However, at this point of $0-revenue, NinjaOutreach with $350/mo does not make sense, and I wonder if BuzzStream will fit my needs. My product is for anyone who uses desktop version of MS Word 2010, 2013, 206, 2019, and 365, and I know that there is total of 1B Office users. So the bottom line is: will I be able to build an email list of interested people? Will I be able to build a list of people that writer blogs/articles on social media, or so called "influencers"? How much effort and how long will it take to get 10,000 contact/emails?