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Email List Cleaner

Paste a messy list of emails and get a clean, deduplicated, validated list ready to import into your email tool. Everything stays on your device.

Your data is never sent to our servers

Clean list

Frequently asked questions

What does an email list cleaner do?

It removes duplicate addresses, fixes formatting errors, strips invalid syntax, and filters out disposable or role-based emails — all locally in your browser.

Is my email list uploaded to a server?

No. Your email list is processed entirely in your browser. It never leaves your device or touches any server.

What file formats are supported?

You can paste email lists as plain text, or upload CSV and TXT files. The tool handles comma, semicolon, newline, and space-separated addresses.

Can I download the cleaned list?

Yes. After cleaning, you can download the deduplicated, validated list as a CSV or TXT file.

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Read our detailed guide about this tool

Why clean your email list?

A dirty email list is one of the fastest ways to destroy your sender reputation. Bounce rates above 2% can get your domain blacklisted by Gmail, Outlook, and Yahoo — meaning all your emails land in spam, even for valid addresses. Duplicate emails waste your marketing budget and annoy subscribers who receive the same message twice. Invalid syntax (like "user@gmial.com") and disposable addresses (like tempmail.com) inflate your list size without adding real prospects. Our Email List Cleaner fixes all of this in seconds: it deduplicates, validates syntax, filters role-based addresses (info@, admin@, support@), and flags disposable domains. Everything happens locally in your browser — your subscriber data never touches any server, making it safe for GDPR-sensitive lists. Whether you are preparing a newsletter launch, migrating to a new platform, or auditing an old database, a clean list improves deliverability, reduces costs, and protects your domain reputation.