⚡ Edge-computed · Zero Latency · 30,000+ Blocked Domains

Stop Fake Signups with Real-Time Email Validation

Instantly detect throwaway email addresses, verify MX DNS records, and protect your platform against spam and abuse.

Block Disposable Emails in 3 Lines of Code

Copy & paste these ready-to-use snippets into your signup or auth handler.

// Node.js / Express Example
const res = await fetch(`https://api.mailguard.dev/?email=${encodeURIComponent(userEmail)}`);
const data = await res.json();

if (data.is_disposable || !data.is_safe_to_deliver) {
  return res.status(400).json({ error: "Temporary and disposable emails are not permitted." });
}

# Python / FastAPI Example
import requests

res = requests.get(f"https://api.mailguard.dev/?email={user_email}")
data = res.json()

if data.get("is_disposable") or not data.get("is_safe_to_deliver"):
    raise HTTPException(status_code=400, detail="Disposable emails not allowed")

<?php
// PHP / Laravel Example
$json = file_get_contents("https://api.mailguard.dev/?email=" . urlencode($user_email));
$data = json_decode($json, true);

if (!empty($data['is_disposable']) || empty($data['is_safe_to_deliver'])) {
    die("Error: Temporary and fake email addresses are blocked.");
}

Predictable Developer Pricing

Scale without friction. Upgrade only when your traffic demands it.

Developer

For local debugging & side projects

$0 / forever

100 queries / day
MX DNS Validation
Disposable Domain Blocklist

Production Pro

For production SaaS and online apps

$19 / month

50,000 queries / month
Real-time daily list updates
Global Cloudflare Edge CDN
Zero rate limiting

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Scale Ultra

For high-traffic platforms & stores

$49 / month

250,000 queries / month
Dedicated priority throughput
Offline dataset download sync

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