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Dedupe Email Lists
Clean up email lists before importing into Mailchimp, SendGrid, or other ESPs.
No login required
Output will appear hereβ¦Email Lists tips
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Most ESPs charge per subscriber and reject duplicates anyway. Dedupe before importing to save credits and prevent errors.
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Enable "Ignore case" β Alice@Example.com and alice@example.com are the same address.
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Use "Count occurrences" mode first to see if you have a few duplicates or thousands β gauges the data quality.
How It Works
1
Enter
Enter your data into the tool above. Everything stays local to your browser.
2
Process
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Download
Get your result instantly. Nothing is stored after you leave the page β complete privacy.
Why use ours?
βCompletely free β no hidden costs, ever
βNo account, email, or login required
βFiles never leave your device
βNo file size limits whatsoever
βNo watermarks on any output
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