Introducing MailCheck: Real-Time Disposable Email Detection API

Shlok Kesharwani April 29, 2025

Tired of spam signups, fake accounts, and free trial abuse? Say hello to MailCheck – your platform’s new gatekeeper against disposable and suspicious emails. 🔒📩

❌ The Problem

Fake emails hurt your platform in real ways:

  • Abused free trials 🎁

  • Inflated analytics 📉

  • Wasted server/API resources 💸

  • Extra load on customer support 🙄

  • Skewed user metrics = bad decisions 😤

✅ The Solution: MailCheck

MailCheck offers a real-time email validation API that doesn’t just check the format — it goes deep. It checks:

  • Domain & MX records

  • Known disposable email providers

  • User behavior signals (for high-risk ones)

🧠 How It Works

Two-level smart checks:

🔹 S1 Check (Standard):
✅ Fast, checks domains, MX, and disposable lists
✅ Ideal for sign-up forms
➡️ Returns is_valid + needs_TBA

🔹 TBA Check (Task-Based Authentication):
🧐 Behavioral analysis for risky emails
🐢 Slower but smarter – only runs if flagged by S1

⚙️ Sample Workflow

  1. Run S1 for every signup

  2. If is_valid = true & needs_TBA = false → ✅ Accept

  3. If is_valid = false → ❌ Reject

  4. If needs_TBA = true → 🔍 Run TBA check

🛠️ API Usage

All requests → https://api.mail-check.tech
Auth → X-API-Key header
Format → JSON POST

Example S1 Request:

curl -X POST https://api.mail-check.tech/api/v0/validate/email \
  -H "Content-Type: application/json" \
  -H "X-API-Key: your_api_key_here" \
  -d '{"email": "user@example.com"}'

Example Response:

{
  "is_valid": true,
  "needs_TBA": false,
  "reason": "Domain has valid MX records and passes all verification checks"
}

🔍 Why MailCheck?

✅ Stops disposable/fake signups in real-time
✅ Saves backend + support costs
✅ Keeps your analytics clean
✅ Developer-friendly & blazing fast 🚀
✅ Seamless integration

🆚 How MailCheck Stacks Up

MailCheck competes with tools like MailerCheck, Bouncer, and Mailcheck.co.
But here’s the edge 👇
Two-tiered verification system = accuracy and speed ⚡

📬 Got questions or wanna partner up?
Drop us a line: product@mail-check.tech

If you're building something real, keep your users real.
MailCheck helps you keep the bots out and the data clean. 🧼🤖

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