Free Email Providers

A comprehensive list of free email providers and domains for validation and filtering

Overview

• Filter free email providers during user registration
• Implement business email validation
• Enhance spam prevention systems
• Complement disposable email detection

Statistics

• Total Domains: 96,748
• JSON Format: 96,748 entries
• Text Format: Raw domain list
• Regular Updates: Monthly maintenance and community contributions

Available Formats

JSON Format

The free-email-providers.json file contains an array of domain strings with 96,748 entries.

Usage Example:

const providers = require('./free-email-providers.json');
console.log(`Total domains: ${providers.length}`);

Source Data

The project maintains source data that gets processed into the final JSON format through an automated build script that handles deduplication and sorting.

Quick Start

Node.js

const freeEmailProviders = require('@emailcheck/free-email-providers');

function isFreeEmail(email) {
  const domain = email.split('@')[1]?.toLowerCase();
  return freeEmailProviders.includes(domain);
}

// Examples
console.log(isFreeEmail('user@gmail.com')); // true
console.log(isFreeEmail('user@company.com')); // false

Python

import json
import re

with open('free-email-providers.json', 'r') as f:
    providers = json.load(f)

def is_free_email(email):
    domain = email.split('@')[1].lower() if '@' in email else ''
    return domain in providers

# Examples
print(is_free_email('user@gmail.com'))  # True
print(is_free_email('user@company.com'))  # False

Integration Examples

Regex Pattern

const providers = require('@emailcheck/free-email-providers');
const escapedDomains = providers.map(domain => domain.replace(/\./g, '\\.'));
const freeEmailPattern = new RegExp(`@(${escapedDomains.join('|')})$`, 'i');

function isFreeEmail(email) {
  return freeEmailPattern.test(email);
}

Form Validation

document.getElementById('email').addEventListener('blur', function(e) {
  const email = e.target.value;
  if (isFreeEmail(email)) {
    showError('Please use a business email address');
  }
});

Server-side Validation (Express.js)

const express = require('express');
const providers = require('@emailcheck/free-email-providers');

const app = express();

app.post('/register', (req, res) => {
  const { email } = req.body;
  const domain = email.split('@')[1]?.toLowerCase();

  if (providers.includes(domain)) {
    return res.status(400).json({ error: 'Free email providers are not allowed' });
  }

  // Continue with registration
});

Maintenance

• Daily Monitoring: Automated checks for provider availability
• Monthly Updates: Manual review and new provider additions
• Community Contributions: Pull requests reviewed and merged
• Quality Assurance: Automated duplicate removal and domain validation
• Source Aggregation: Multiple reputable sources combined
• Build Process: Automated script processes and consolidates data from multiple sources

License

This project is licensed under the MIT License - see the LICENSE.md file for details.

Contributing

1. Fork the repository
2. Create a feature branch
3. Add your changes to the source files
4. Run the build script to process and deduplicate the data
5. Submit a pull request with a clear description

Important Notes

• Active Providers Only: List contains only currently active free email services
• Regular Updates: Providers are verified monthly for availability
• Comprehensive Coverage: Includes webmail, temporary, and regional providers
• Automated Processing: All entries are deduplicated and sorted alphabetically via build script
• Performance Optimized: JSON format for efficient parsing and lookup
• Quality Assured: Multi-source aggregation with automated validation

Related Projects

• email-validator-js - JavaScript email validation library using this provider list
• Email Check API - Cloud service for email validation and deliverability checking
• disposable-email-providers - List of disposable/temporary email providers

Support

• Issues: Create an issue for bugs or requests
• Discussions: Join discussions for questions
• Website: Email Check App

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Made with ❤️ by Email Check App

If you find this useful, please give us a ⭐ on GitHub!