FormMaillyGo – Free, Serverless Contact Form to Email Gateway

FormMaillyGo is a lightweight backend that turns any contact form submission into a real email — fast, secure, and completely free (within generous AWS Lambda limits ).

🧑‍💻 Whom is this for?

• Solo developers, indie hackers, or small startups
• Static websites (like those on Netlify, Vercel, GitHub Pages)
• Anyone tired of paid contact form services (like Formspree, Getform, etc.)

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🚀 Why Use FormMaillyGo?

Most free contact form services only allow 50–100 submissions/month. That’s very limited.

FormMaillyGo runs on AWS Lambda (or any serverless platform), which has a much higher free tier. It’s ideal for scaling contact form handling at zero or ultra-low cost.

You only pay if your usage goes beyond free limits — and even then, it’s cheaper than paid form services.

The AWS Lambda free tier includes one million free requests per month and 400,000 GB-seconds of compute time per month

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🛠️ How It Works

1. Your frontend sends a JSON POST request to /api/contact

2. FormMaillyGo:

   • ✅ Validates input (like name, email, etc.)
   • 📧 Formats a clean HTML email
   • 📤 Sends the message via SMTP (Gmail, SES, Postmark, etc.)

3. You receive the message directly in your inbox.

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🔐 Key Benefits

• Zero dependency: No external SDKs or vendor lock-in.
• Military-grade validation: Validates names, emails, message content.
• Fully async-ready: No delay to your main app.
• Perfect for serverless: Cold-start optimized.

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🧪 API Endpoints

Method	Endpoint	Description
GET	/api/health	Check if the server is live
POST	/api/contact	Send contact form data

Example Contact Form Payload:

{
  "name": "Alice",
  "email": "alice@email.com",
  "subject": "Product Feedback",
  "message": "Loved your product!",
  "product_name": "MySite",
  "product_website": "https://mysite.com"
}

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🧾 Setup

1. Set up your .env file:

SENDER_EMAIL=your@gmail.com
SENDER_EMAIL_PASSWORD=your-gmail-app-password
RECEIVER_EMAIL=you@example.com
SMTP_HOST=smtp.gmail.com
SMTP_PORT=587

2. Run the server:

go run main.go

Works out-of-the-box on port 8080.

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📁 File Structure (Simplified)

File	Role
main.go	Sets up server + routes
handler.go	Handles requests + JSON validation
email.go	Sends emails using SMTP
contact.go	Defines the contact form structure
validator.go	Validates inputs like email, URL, etc.
config.go	Loads SMTP config from .env
template/contact.go	Generates HTML email template

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🧘 Simplicity + Power

FormMaillyGo gives you control without complexity. You get:

• Unlimited usage (within AWS/GCP free tier)
• Full validation
• Fully customizable
• No monthly fees

License & Attribution

This project is under MIT License

Read carefully MIT License NOTICE