Email List Cleaner
Turn a messy email list into a clean, send-ready list. Remove duplicates and invalid addresses, normalize case, and export a tidy CSV — all in your browser.
How it works
Get started with email list cleaner in a few simple steps.
Paste your list
Paste emails from any source — a spreadsheet, your CRM export, or plain text.
Choose your options
Toggle lowercase, remove invalid addresses, and remove duplicates.
Export a clean list
Copy the cleaned list or download it as a CSV ready for your email tool.
Why use this free tool
Everything you need, integrated in one workspace.
- Removes duplicates and invalid addresses automatically
- Normalizes case so you never send to the same address twice
- Reduces bounces and protects your sender reputation
- Free forever, private, and runs entirely in your browser
Related tools
More free tools to power your email workflow.
Frequently asked questions
Is the email list cleaner free?
Yes, it is completely free and works in your browser with no account required.
Why should I clean my email list?
Duplicate and invalid addresses cause bounces, which hurt your sender reputation and email deliverability. A clean list protects your domain.
What happens to my data?
Nothing leaves your browser. All cleaning is done locally, and you choose whether to download the result.
Ready to send better emails?
OutSends helps you run cold email campaigns from your own Gmail, SMTP, or API provider — free, no credit card.