Remove Duplicate Lines from Email Lists
Before sending newsletters or outreach campaigns, you need a clean list with no duplicates. Paste your email list here to instantly remove repeated addresses.
How to do this
Export your email list
Paste all emails (one per line)
Run to deduplicate
Copy your clean list
Paste text below and run the tool. Everything runs locally in your browser. No data is stored.
Remove Duplicate Lines
Paste text with duplicate lines and instantly get a deduplicated version. Useful for cleaning lists, log files, CSV data, and any text where repetition needs to be eliminated.
Example
Input
apple banana apple cherry banana
Output
apple banana cherry
How Remove Duplicate Lines Works
Paste text with duplicate lines and instantly get a deduplicated version. Useful for cleaning lists, log files, CSV data, and any text where repetition needs to be eliminated.
This tool runs entirely in your browser — no data is sent to any server. Paste your text, click Run, and get your result instantly. You can also chain this tool with others using the pipeline feature: run Remove Duplicate Lines, then continue with a related tool to build a multi-step text workflow.
Related Tools
TextRefinery is a free, open-source text processing toolkit. Learn more about regular expressions and text processing on the web.
Example: Remove Duplicate Lines from Email Lists
Input
alice@company.com bob@example.org alice@company.com charlie@test.com bob@example.org
Output
alice@company.com bob@example.org charlie@test.com
Related Use Cases
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Remove Duplicate Lines from Log Files
Clean up repeated entries in server logs, application logs, and error logs.
Remove Duplicate Lines from Spreadsheet Data
Clean duplicate entries from Excel or Google Sheets data pasted as text.