Email List Cleaner
Paste emails and get a cleaner deduplicated list.
Tidy an email list fast
Email lists collect duplicates, stray whitespace, inconsistent casing, and obvious non-emails. This cleaner trims each entry, lowercases addresses, removes duplicate lines, and flags anything that still looks wrong, so you get a tidy, deduplicated list.
A clean list means fewer bounces, no double-sends, and better deliverability. Paste your addresses and get a reviewed, deduplicated result — and because it runs locally, even a list you would never paste into an unknown site stays private.
Cleaner lists, privately
Trimming, lowercasing, and dropping obvious non-addresses cuts bounces and duplicates before you import. The list is cleaned in your browser and never uploaded.
Frequently asked questions
What does the cleaner change?
It trims spaces, lowercases every address, and removes duplicates, so "Jane@Acme.com" and "jane@acme.com " become one entry. Plus-addressing like jane+news@acme.com is kept.
How does it flag bad entries?
Lines that do not look like name@domain.tld after cleaning are listed under "Needs review", such as missing @ signs, missing domains, or stray text pasted with the address.
Does it verify that addresses exist?
No. It checks format only. Verifying deliverability means checking the domain's mail records or sending a confirmation email, which this tool does not do.
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