Clean Your Email List for Free — Deduplicate & Validate
A messy email list hurts your deliverability and wastes your marketing budget. Paste your list and get a clean, deduplicated, validated file in seconds.
Nothing is uploaded — runs entirely in your browserWhy clean your email list?
Duplicate emails mean you pay twice for the same contact. Invalid emails bounce, damaging your sender reputation. Cleaning before every campaign is the simplest way to improve open rates and protect your domain.
What does this tool remove?
The tool removes exact duplicates, flags invalid formats, normalizes everything to lowercase, and exports a clean CSV ready for Mailchimp, Brevo, HubSpot or any other platform. It also tells you exactly how many duplicates and invalids were found.
Is my list private?
Completely. Your email list is processed in your browser and never sent to our servers. This is especially important for GDPR-regulated lists or confidential business contacts that you cannot risk uploading to a third-party service.
Free, instant, and 100% private. No account needed.
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