Good point, I'm going to add more contact information.
I have a list of beta testers that is steadily growing, its a good mix of people from reddit and similar sites. I cannot give you demographic data but in the past I've had testers fill out surveys and asked them for their twitter handle (but only optionally if they were OK with it). So we could include that question in a survey for you.
I think the interesting part is that I contact founders that recently launched a project. Maybe after the launch they get exposed to a lot of new pain points, for example now they have to write invoices or do customer relations management which they never did before. That might be a good opportunity to catch their attention.
It works like this: I have a list of places where startups get featured and I select the startups from those websites and contact them. Those are all projects that have recently launched.
Womenhustlers sounds like a good fit, other founders are a good target audience I guess.
OK, I've decided to publish the list. The value is not the list itself but that I do the work for you. Instead of creating 100 different accounts and entering the same information so many times, just do it once and we'll do the rest for you.
I've sorted the table of websites (over 150) by their domain authority and I work the list from top to bottom. The highest ranking ones are in the 90's (100 is max) and it goes down steadily.
https://launchpropeller.com/