Bulk Email Checker
Email list validator tool
Validate large email lists at once and export results. Free to try; paid plans handle up to 100,000 addresses per file.
Bulk Validation
Upload a file or paste a list of email addresses
0 emails entered
Bulk checks: 25 free to try, sign in to run your full list (up to your plan limit).
Bulk Validation Features
File Upload
Support for .txt files and multi-column .csv files with column selection
Paste List
Simply paste a list of email addresses in the text field
Export Results
Download results in CSV format for further analysis
Detailed Statistics
Complete statistics on valid and invalid email addresses
Security
Your lists stay private - we never sell or share them, and bulk results are auto-deleted after a short retention window
Fast Processing
Server-side processing of large lists, up to 100,000 addresses per file
Real-time Progress
Live progress bar showing validation status and speed
Bulk Email Validation Guide
Bulk email validation is essential for businesses and organizations that manage large email lists. It helps identify invalid, inactive, or non-existent email addresses before sending campaigns, improving deliverability rates and protecting your sender reputation.
Why use bulk email validation?
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Improve deliverability: Remove invalid addresses that could harm your sender reputation
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Save costs: Avoid sending emails to non-existent addresses
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Better engagement: Focus on valid addresses for higher open rates
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Compliance: Maintain clean lists for GDPR and other regulations
Supported file formats
Text files (.txt)
One email address per line
CSV files (.csv)
Multi-column CSV with column selection
Processing limits and recommendations
Best practices for bulk validation
Understanding validation results
✅ Valid Emails
Passed all validation checks and can receive emails
❌ Not Valid
Failed a validation check - bad format, no mail server, or the mailbox doesn't exist