Old lists aren't dead lists — I emailed 600 people from 14 years ago
I emailed 600+ people I hadn't spoken to in 14 years 5 of them became my first paying customers — within 60 minutes. The product isn't even publicly launched yet. Here's what happened. I spent the last year building a desktop voice AI studio as a solo dev. The interesting technical challenge: running 3 different ML inference engines entirely on-device in the same process. Native Rust backend, no Python, no Docker. The fast engine does 6x real-time on Apple Silicon. The multilingual engine handles 23 languages. Voice cloning from a short audio sample. I'm partially dyslexic — been converting text to audio since high school. That personal workaround eventually became a real product. 3 days ago, I emailed 648 customers from a marketing tool I built back in 2012. Hadn't contacted them in over a decade. Plain text emails, no design, no branding — just personal messages. 10% open rate on a stone-cold list. Some of them actually bought. Revenue before the product even launched publicly. One guy found a PDF from my old product on his hard drive and wrote me a full page about it. 14-year-old business relationships converting into customers today. Tonight it goes live. For anyone here building with AI — has anyone else run ML inference natively on desktop? The symbol collision problem between multiple inference engines was genuinely hard. Curious if others have hit this.