Remove Duplicate Emails
Remove duplicate email addresses from list online — paste any messy list and get clean, unique emails in seconds. Use the free Remove Duplicate Emails below — enter your values and get instant results, right in your browser. Logic: email addresses are matched with the pattern [A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}; duplicates are removed by keeping only the first occurrence of each exact line. Matching is case-sensitive, so "Ali@x.com" and "ali@x.com" count as different lines.
How to use the Remove Duplicate Emails
Mailing lists, signup exports and copied contact lists almost always contain the same email address two or three times, which wastes sends and can get you flagged for spam. This tool pulls every valid email address out of any pasted text, removes the duplicates automatically, and hands you back one clean list with one address per line. It works entirely in your browser, so private contact lists are never uploaded anywhere.
- Paste your messy list — emails mixed with names, commas or notes all work — into the input box.
- Click the Extract Emails button to pull out every valid email address, one per line.
- Click Remove Duplicate Lines to delete repeated addresses, keeping the first occurrence.
- Optionally click Sort Lines A-Z to alphabetize the cleaned list.
- Click Copy to copy the unique emails for your newsletter tool or spreadsheet.
Formula
Worked example
Frequently asked questions
No, it only cleans formatting and removes duplicates. It does not verify whether an address actually exists or accepts mail.
Yes. The extractor finds addresses no matter how they are separated — commas, semicolons, spaces, new lines or mixed text.
Yes. Everything runs in your browser with no uploads, so your contact list never reaches any server.