Code Story: Insights from Startup Tech Leaders S12 Bonus: Daniel Shnaider, Warmy.io
Feb 19, 2026
Daniel Shnaider, founder and CEO of Warmy.io who built an email deliverability product after fixing his own e-commerce outreach, shares his startup journey. He talks about building an MVP, early sales tactics, guerrilla growth and hiring via Upwork. He also covers product mistakes, team loyalty, and plans to use AI for smarter deliverability diagnostics.
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Product Born From Founder’s Sales Pain
- Daniel Shnaider built Warmy after solving deliverability for his own physical-products business that emailed mom-and-pop stores.
- He turned an in-house fix into a product after getting paying customers and demand evidence.
Validate By Selling Early
- Validate ideas by selling early and getting paying customers, even via lifetime deals.
- Use customer payments as golden feedback to iterate product and pricing quickly.
Let Paying Customers Drive Roadmap
- Build your roadmap from a mix of gut and paid-customer feedback, prioritizing paying customers' requests.
- Stay on support channels personally to capture high-signal feedback when early.