Sarah Ahmad offered her first product for free during COVID. Nobody signed up. Her next company hit 10,000 customers and 8-figure ARR. The difference was SaaS product-market fit - validated before writing a single line of code.

Sarah shares how she and her co-founder tested demand with a landing page in the YC community, signed 100 paying customers using Google Drive and a Stripe link, and built Stable into the leading AI-powered virtual mailbox for businesses. She also explains why the SEO playbook that built the company stopped working and what replaced it.

Stable serves over 10,000 companies - from solopreneurs to enterprises like DoorDash, GitLab, and Realty Income - with 50-60 employees and operations across 20+ US locations.

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🔑 Key Lessons

• 🎯 Test SaaS product-market fit before writing code: Sarah's first startup Mistro failed because she built the full product before validating demand. With Stable, she validated with a landing page and manual operations - signing 100 paying customers before writing any software.
• 📉 Zero signups at zero price means no product-market fit: During COVID, Mistro couldn't get users even for free. That signal was clearer than any metric - if people won't use it for nothing, the problem isn't pricing, it's relevance.
• 🛠️ Use embarrassingly manual MVPs for market validation: Stable's first version was Google Drive, Zoom, and Stripe. Customers sent IDs via email. It was embarrassing, but it captured real demand while the team figured out what to build.
• 💰 Spend enough on paid ads to get real signal: Sarah's team spent only a few hundred dollars per week on ads - not enough to know if the channel worked. She now recommends spending thousands to saturate high-intent searches before optimizing.
• 🚀 Word of mouth scales when you solve a real pain point: Stable reached 1,000 customers before hiring anyone for growth, with a team of just 6-7 people at $1M ARR. Genuine product-market fit drove organic referrals without a marketing budget.
• 🤝 Compensate for a rough product with exceptional customer experience: Sarah and her co-founder personally onboarded every early customer via Zoom and handled all support. People forgive a rough product when you solve a real problem and show up for them.
• 🏢 Physical operations create a moat AI can't easily replicate: Stable's processing centers and logistics network across 20+ locations give it a defensibility layer that pure software companies don't have.

Chapters

• Introduction
• First startup Mistro and why it failed
• Discovering the virtual mailbox opportunity
• Validating demand with a landing page
• The no-code MVP with Google Drive and Stripe
• How Stable differentiated from legacy incumbents
• Getting to 1,000 customers with a team of 6
• The paid ads mistake most early founders make
• From manual operations to building software
• How AI is changing the product and industry
• Testing SaaS product-market fit versus building blind
• Shifting from product builder to CEO

Resources

• Full show notes: https://saasclub.io/475
• Join 5,000+ SaaS founders: https://saasclub.io/email