I Built a $2M AI Company in 72 Hours
How I went from zero to 100,000 lines of production code in 3 days—and why this might be the most documented "impossible" build ever
Few days ago, I tweeted: "Building a production-ready AI SaaS this weekend. Will document everything."
The replies were brutal:
"Sure, buddy, another weekend project 🙄"
"It takes YEARS to build real software"
"This is physically impossible"
"RemindMe! When this fails"
Well...fuck it. Here's the live product I built in 72 hours:
Folderly EmailGen AI
https://generate.folderly.com/
Go ahead, try it. Generate an AI email. See the 15,000+ templates in action. Check the HubSpot integration. Test the enterprise features.
I'll wait.
Here's what I actually built in 3 days:
✅ 100,000+ lines of production code
✅ 15,000 email templates processed and vectorized
✅ Complete AI email generation platform
✅ HubSpot CRM integration (the "impossible" one)
✅ Stripe payment processing
✅ Enterprise-grade analytics dashboard
✅ 50+ API endpoints with clean architecture
✅ Zapier, Make.com and N8N live.
The product is live. The code is real. The documentation is complete.
But here's the kicker: This wasn't even my first "impossible" 3-day build.
Remember my
That was just practice.
This time, I didn't just build something cool. I built something that could change how B2B sales works forever.
But here's the part that will blow your mind: everything you think you know about software development timelines is wrong.
⚡ The Timeline That Broke Every Startup Rule
Friday 6 PM: The Spark
After my viral three-day game-building success, I became more confident than ever with AI.
Could I create something even extra complex? Something that businesses would actually pay for?
The challenge: Build a production-ready AI B2B SaaS platform in 72 hours.
The constraints:
No team, no existing codebase, no shortcuts
Real features, real integrations, real enterprise capabilities
Has to be something people would actually use
The motivation: Prove that the "it takes 2 years to build a startup" narrative is complete nonsense.
Saturday: Day 1 - The Foundation Rush (24 hours)
6 AM: Coffee #1. Started with customer research on Perpexity, Deep Search (GPT), and Claude;
8 AM: Posted a poll: "What's your biggest B2B email pain point?" Got 147 responses in just a few hours.
10 AM: The clear winner is, "Emails sound generic and get ignored."
I immediately thought that I wanted to capitalize on the content we created over the last ten years.
12 PM: Tech stack decision made in 15 minutes (Next.js + Supabase + OpenAI)
2 PM: Database designed and deployed to production
4 PM: Basic authentication working with Clerk
6 PM: First AI email generated (it was terrible, but it generated)
8 PM: UI mockups created and basic interface deployed
10 PM: Payment processing integrated (Stripe in 2 hours)
12 AM: MVP is completely functional
Lines written: 25,000 and only 3 coffees done as a result.
Sunday: Day 2 - The Template Empire (24 hours)
This is where it gets absolutely insane...
7 AM: Started building template processing system
8 AM: Reached out to email marketing agencies for template partnerships
10 AM: First agency responds with 5,000 high-converting templates
12 PM: Built automated processing pipeline to categorize and analyze templates 2 PM: Second agency partnership secured (10,000 more templates)
4 PM: Vector database populated with all 15,000+ templates
6 PM: AI now generating human-quality, personalized emails
9 PM: HubSpot integration started
10 PM: Breaking through HubSpot's API authentication maze
11 PM: HubSpot CRM integration working perfectly
Total lines: 65,000 Template partnerships: 2 agencies
Monday: Day 3 - The Enterprise Polish (24 hours)
9 AM: Built comprehensive analytics dashboard
10 AM: Added A/B testing framework for email optimization
11 AM: Customer support chatbot implemented
12 PM: Load testing and performance optimization
2 PM: Security audit and compliance features
4 PM: Enterprise SSO integration prepared
6 PM: Documentation written and published
8 PM: Product Hunt submission prepared
10 PM: Final testing and bug fixes
12 AM: 100,000+ lines milestone reached, product launched
Final architecture:
Frontend: 35,000 lines (Next.js + TypeScript + Tailwind)
Backend: 28,000 lines (Supabase + Custom APIs)
AI Engine: 15,000 lines (OpenAI + Custom RAG system)
Integrations: 12,000 lines (HubSpot + Stripe + Auth)
DevOps/Scripts: 8,000 lines (Deployment + Monitoring)
Analytics: 2,000 lines (Custom tracking + dashboards)
and I don’t know whether it's good or bad; I just know for sure that it’s working and I did it.
💰 The Numbers That Made VCs Cry (Literally)
Revenue Trajectory
Hour 72: Product launched at https://generate.folderly.com/
Current status: $0 revenue, infinite potential
The goal: Document the path to $2M ARR in real-time
Your role: Watch it happen (and maybe become customer #1?)
The Unit Economics That Will Scale
Cost per AI-generated email: $0.04
Target revenue per email: $5.00
Projected customer lifetime value: $2,400
Break-even point: 12 customers
Path to $2M ARR: 834 customers at $200/month average
Plan to sell an annual $5,000 subscription with full functionality.
The advantage: Starting from zero with a complete product means every dollar is pure growth.
Usage-Based Pricing Strategy
STARTER: $49/month (150 AI emails)
GROWTH: $199/month (1,000 AI emails)
PRO: $499/month (2,500 AI emails)
The psychology: Users don't buy "credits", they buy confidence that their emails will get responses.
The Features That Shocked Enterprise Clients (Built in Hours, Not Months)
