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Raguel
Raguel

Posted on • Originally published at rapidapi.com

I Built a Free Email Validation API - Here's Why You Should Stop Paying $50/mo for One

#api #webdev #productivity #programming

The Problem

You're building a SaaS app. You need email validation. You Google it. Every API wants $29-99/month for basic validation.

You need phone validation too? That's another subscription. Text analysis? Another one. QR code generation? You get the idea.

I got tired of this. So I built DataForge API - one API with 25+ endpoints covering everything a developer needs, with a free tier of 500 requests/month.

What DataForge Does

Email Validation

Not just regex. Full validation with:

  • MX record verification
  • Disposable email detection (140+ domains)
  • Free provider detection (Gmail, Yahoo, etc.)
  • Role-based email detection (admin@, info@, etc.)
  • Deliverability scoring (0-100) 
import requests

url = "https://dataforge.p.rapidapi.com/validate/email"
headers = {
    "X-RapidAPI-Key": "YOUR_KEY",
    "X-RapidAPI-Host": "dataforge.p.rapidapi.com"
}
params = {"email": "test@gmail.com"}

response = requests.get(url, headers=headers, params=params)
print(response.json())
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Response:

{
  "email": "test@gmail.com",
  "is_valid": true,
  "score": 75,
  "checks": {
    "syntax_valid": true,
    "mx_exists": true,
    "is_disposable": false,
    "is_free_provider": true,
    "is_role_based": false
  }
}
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Phone Validation

International phone number validation with country detection, carrier info, and formatting.

URL Validation

Validate URLs with optional live HTTP check - verify the URL actually responds.

Text Analysis

  • Word count, sentence count, paragraph count
  • Reading time estimation
  • Readability scores (Flesch Reading Ease, Flesch-Kincaid)
  • Sentiment analysis
  • Word frequency analysis

Hashing and Security

  • 10+ hash algorithms (MD5, SHA-256, SHA-512, BLAKE2, etc.)
  • HMAC generation
  • Hash comparison
  • Secure password generation
  • UUID v4 generation
  • Cryptographic token generation

QR Code Generation

Generate QR codes as base64 PNG or direct image download. Customizable size.

IP Geolocation

Free IP-to-location lookup with country, city, timezone, ISP info.

Pricing

Plan Price Requests/mo
Basic Free 500
Pro $9.99 10,000
Ultra $19.99 50,000
Mega $49.99 500,000

Compare that to paying $30/mo for email validation alone + $20/mo for phone validation + $15/mo for text analysis...

Why I Built This

Most API providers charge separately for each service. If you're a solo developer or a small startup, those costs add up fast. DataForge bundles everything into one subscription.

One API key. 25+ endpoints. Done.

Try It Now

DataForge API on RapidAPI

The free tier gives you 500 requests/month - enough to test everything and build your MVP.

Tech Stack (for the curious)

  • Backend: Python + FastAPI
  • Hosting: Render.com (Docker)
  • Marketplace: RapidAPI
  • Validation: dnspython, phonenumbers, Pydantic
  • QR Codes: qrcode + Pillow
  • Rate Limiting: slowapi

The entire API is open source: GitHub Repository

If you're building something and need data validation without the $100/mo bill, give DataForge a try. I'd love to hear your feedback.

What other endpoints would you find useful? Drop a comment below.

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