99.9% Accuracy
Enterprise-Grade Validation

Stop Email Bounces.
Protect Your Sender Reputation.

Upload your email list — we'll deep-verify every address with 7-layer validation including SMTP mailbox checks, MX record lookups, disposable email detection, and more.

SMTP Verification
MX Record Check
Disposable Detection
Catch-All Detection
Deduplication
Role-Based Filter

Drop your file here

or click to browse — supports .xlsx, .xls, .csv

We'll extract emails from any column, handle comma-separated values, and remove duplicates automatically

Quick Check — Single Email

How to Use MailGuard Pro

1. What kind of file can I upload?

You can upload any .csv, .xls, or .xlsx file. You do not need to format your columns perfectly. Our engine automatically scans every cell in your spreadsheet to extract email addresses seamlessly.

2. Daily Quota (1,000 Emails)

Your license key grants you exactly 1,000 email validations per day. If your file contains duplicates, our system automatically removes them before processing so they never count against your daily quota.

3. The Vercel Super-Speed Optimization

Because we run securely on high-speed serverless platforms, our engine leverages 100 simultaneous verification threads. This guarantees your list is verified instantly, preventing any cloud timeouts.

4. Understanding the Results

  • Valid: Fully verified. Safe to send.
  • Risky: Catch-all domains or role-based (info@).
  • Invalid: Bad syntax or dead domain. Delete immediately.
  • Disposable: Temporary, fake throwaway emails.