I'm a solo founder and recently launched Scubamail , an email marketing platform focused on startups, creators, and small businesses. The product is live, emails are sending, automation works, and I've started onboarding a few early users. Now I'm facing a challenge that many founders probably know well: How do you get the first 100 beta users when nobody knows you exist? So far I've been: Posting on Reddit and Indie Hackers Reaching out to founders directly Sharing progress pub...