Platform for Fixing Typos in Newsletters

Web app
Platform to identify and fix email subscriber typos and recover missing subscribers
Published on
April 16, 2025
Main Metrics
$157
ARR
5
Customers
2024
Launched

$50,000

Asking Price
Already Sold
Main Metrics
$157
ARR
5
Customers
2024
Launched

Overview

<p><b>Key Highlights</b></p><ul><li>💸 <b>Lifetime Revenue</b>: $380</li><li>💰 <b>Lifetime Profit</b>: $120</li><li>📉 <b>Churn</b>: 0% — Our original customers are still active</li><li>💵 <b>MRR</b>: ~$10</li><li>🧠 <b>LTV</b>: Best customer has spent $216</li><li>🔁 <b>CAC</b>: Low — acquired via cold email or Twitter</li><li>📦 <b>Business Model</b>: $0.60 per recovered subscriber</li></ul><p><b>Team</b></p><p>My platform was built by two friends on the side—one focused on product and tech (React frontend, Flask backend), and one on early marketing efforts.</p><p><b>Tech Stack</b></p><ul><li><b>Frontend</b>: React</li><li><b>Backend</b>: Flask (Python)</li><li><b>Scripts</b>: Python for validation &amp; automation</li><li><b>Hosting</b>: AWS (Elastic Beanstalk &amp; EC2)</li></ul><p>Transfer to a new owner will be simple: clean codebase, clear dependencies, and minimal infrastructure.</p><p><b>Marketing and Growth</b></p><p>We experimented lightly with cold email and Twitter posts but never invested heavily in marketing. Customers we’ve acquired love the product and have stuck around, but we haven’t had the bandwidth to scale customer acquisition or explore other channels like paid search, or affiliate partnerships.</p><p><b>Revenue and Profit</b></p><ul><li><b>ARR</b>: ~$120</li><li><b>MRR</b>: ~$10</li><li>AWS hosting: ~$40/month</li><li>Email validation API: $67 lifetime</li><li><b>Revenue model</b>: Usage-based, billed through Stripe</li><li><b>Churn</b>: 0% from initial users</li></ul><p><b>Return on Investment</b></p><p>We’re pricing this primarily at <b>replacement cost</b>—not on a revenue or profit multiple. A buyer could 3x their money with just <b>100 customers paying $2.50/month</b>, and there’s a clear opportunity to grow by targeting e-commerce platforms like Klaviyo, where subscriber value is higher.</p><p><b>Startup Assets (included in sale)</b></p><ul><li>💻 Full codebase</li><li>🌐 Domain name</li><li>📈 Stripe account (with transaction history)</li><li>🐍 AWS account with infrastructure</li><li>🧠 Brand/logo and light marketing copy</li></ul><p><b>Risks</b></p><p>The biggest risk is that growth requires more focused effort on marketing. But the product is solid, infrastructure is light, and it’s already proven some users are willing to pay. Email validation costs scale with usage, so margins stay manageable.</p><p><b>Summary</b></p><p>My platform is a simple, clean micro-SaaS with real paying customers, a stable product, and a low-maintenance stack. It’s a great opportunity for someone with marketing expertise who is looking for a side project with upside. We’re selling it at cost to free up time and focus—so if you’re looking for a no-fuss SaaS starter, this is a strong pick.</p></br>✅ $157 in Annual Revenue✅ 5 customers✅ Business model: One-time sales✅ Built with AWS, Fast API, Python

$157

Annual Revenue

5

Number of Customers

Expenses

$40\/mo for AWS. ~$20\/yr Email Validation.

Business Model

Charge $0.60 per saved subscriber.

Target Audience

Newsletter operators.

Asking Price Reasoning

Replacement cost is likely much higher. $7,500 worth of development time was invested in building it.

Reason for Selling

Focus on other startups.

Growth Opportunity

Marketing, cold outreach, paid ads, affiliates.

30 days free support from seller

Competitors

Unbounce.

Tech Stack

AWS, Fast API, Python, React.

Traffic Metrics

Revenue Metrics

How it works

Main Metrics
$157
ARR
5
Customers
2024
Launched

$3,000

Asking Price
Already Sold
Founder Details
Read the story
Main Metrics
$157
ARR
5
Customers
2024
Launched