Free Bulk Email Verification
Upload a CSV file and verify up to 100 email addresses instantly. UDecode’s bulk email verifier performs syntax validation, MX record lookup, disposable email detection, free provider checks, and role-based filtering. No signup required.
How Bulk Email Verification Works
- Email syntax validation detects formatting errors
- MX record lookup confirms mail server availability
- Disposable email detection blocks temporary inboxes
- Free provider check identifies Gmail, Yahoo, Outlook, etc.
- Role-based filtering flags generic addresses like info@ or sales@
How to Use the Bulk Email Verifier
- Create a CSV file with one email address per row
- Upload the file using the form above
- Wait a few seconds for verification to complete
- Download your verified results instantly
Why Use UDecode for Bulk Email Verification?
Reduce Bounce Rates
Remove invalid addresses before sending campaigns.
Protect Sender Reputation
Avoid spam traps and blacklist risks.
Save Time & Cost
Clean large lists quickly with no signup required.
Fast & Private
Files are processed instantly and never stored.