We'll be starting the private beta very soon, so I've been spending a lot more time to get people interested and get grow the waiting list to early access.
This is a big milestone for me because this means 100+ people are interested in trying the product even though I only have put out a few screenshots and a video. Although I still have to find a way to validate that people will pay for it :)
I've mainly used Twitter to reach out to people that are interested in No-Code and have used similar tools.
I've been capturing emails in the website (frontdeck.co) and in Product Hunt (https://www.producthunt.com/upcoming/frontdeck).