Duplicate Email Cleaner

Deduplicate pasted or CSV emails entirely in your browser.

How it works

Remove duplicate emails from a list

Paste addresses → click Remove duplicates → get a unique list (case-insensitive). Nothing is uploaded.

Or start from a real-life example

Results appear here after you click Remove duplicates.

Ready to send with MailShrine?

New accounts get free signup credits. Fix the copy, then send from MailShrine.