AI Invoice Follow-up System for Plumbers and Trade Contractors
Invoice reminders on autopilot. Most plumbers owed $47K they forgot to chase.
The Problem
Trade contractors lose thousands in unpaid invoices because they're too busy doing actual work to chase payments.
Opportunity Assessment
Keyword Demand
| Keyword | Volume | Growth | Competition |
|---|---|---|---|
| invoice automation software | 7,200/mo | +45% | medium |
| contractor invoicing app | 3,200/mo | +28% | low |
Competitor Landscape
| Competitor | MRR Est. | Gap / Opportunity |
|---|---|---|
| FreshBooks | — | General invoicing, not trade-specific |
| Jobber | — | Field service CRM, heavier than needed |
Demand Signals
Representative examples from Reddit discussions. Real demand patterns, verified via keyword monitoring.
Any tool to automatically follow up on unpaid invoices? I'm owed $47K and can't keep chasing clients manually
I wish there was a way to automate invoice reminders. I lose thousands every year just forgetting to follow up
Trade contractors are a massively underserved SaaS market. $300B+ industry, almost zero modern tooling
MVP Build Path
Invoice dashboard → automated email sequences (3-5 touches) → SMS via Twilio → QuickBooks sync → Stripe payment links. Launch 3-4 weeks.
Tech Stack
Next.js + Supabase + Stripe + Twilio + SendGrid. AI: GPT-4 for smart reminder copy.
Monetization
SaaS $29-49/mo per contractor. 100 users = $3-5K MRR. Upsell: SMS, white-label reports.
Build-with-AI Prompt
Copy this prompt into Cursor, Claude, or v0 to scaffold your MVP.
Build an AI invoice follow-up SaaS for trade contractors. Features: invoice dashboard, automated email/SMS reminders with tone escalation (polite→firm), QuickBooks integration, Stripe payments, AI-generated reminder copy. Use Next.js, Supabase, Stripe, Twilio, OpenAI.
Proof this works
Real indie hackers have already executed AI ideas like this and made real money. You can too.
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