Clean up your email lists in seconds. Remove duplicates, invalid entries, and messy formatting. 100% private - no uploads required.
Remove duplicate email addresses
Data never leaves your browser
Clean thousands in milliseconds
Paste your list above to sort, clean, and transform. All processing happens in your browser — your data never leaves your device.
Everything you need to clean, deduplicate, and organize your email lists.
Instantly find and remove duplicate email addresses from your list, keeping only unique entries.
Catch duplicates like "John@email.com" and "john@email.com" with smart case-insensitive comparison.
Organize emails alphabetically to group by domain (gmail.com, yahoo.com, etc.) for easy review.
Trim extra whitespace, remove blank lines, and clean up messy copy-pasted email lists.
Download your cleaned email list as TXT or copy directly. Ready for your email marketing platform.
All processing happens in your browser. Your email list never leaves your computer.
Clean up your subscriber lists before sending campaigns to improve deliverability and reduce bounce rates.
Remove duplicate contacts after exporting from Salesforce, HubSpot, or other CRM systems.
Combine email lists from different sources and automatically remove duplicates.
Prepare your email list for verification services by removing obvious duplicates first.
Keep your newsletter subscriber list clean and organized for better engagement.
Clean up prospect email lists before outreach to avoid sending duplicate messages.
Simply paste your email list into the editor above, then click the 'Clean' menu and select 'Remove Duplicates'. You can choose case-insensitive matching to catch duplicates like 'John@email.com' and 'john@email.com'. The duplicates are removed instantly.
Absolutely. All processing happens entirely in your browser using JavaScript. Your email list never leaves your device and is never sent to any server. We have no way to see, store, or access your data. ListWrangler is 100% private.
Yes! ListWrangler can handle email lists with tens of thousands of entries. There's no artificial limit - the only constraint is your browser's memory. Processing is fast even with very large lists.
After cleaning your list, click the download button in the toolbar to save as a TXT file, or simply select all and copy. You can also use the 'Export' options to download as CSV format for importing into email marketing platforms.
ListWrangler removes duplicates, empty lines, and extra whitespace. For validating email address format, you can use the 'Filter Lines' feature with a regex pattern. However, for verifying if emails actually exist, you'll need a dedicated email verification service after cleaning.
Yes! Use the 'Sort' menu to sort your email list alphabetically. Since the domain comes after the @ symbol, emails will naturally group by domain when sorted A-Z. You can also sort Z-A for reverse order.
Copy your email list from any source and paste it into the editor above.
Click Clean > Remove Duplicates to instantly eliminate duplicate emails.
Optionally sort alphabetically and trim whitespace for a clean list.
Copy your clean list or download as TXT for your email platform.
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