HeroTools / SEO & Marketing
Local · Private · Free

Email List Cleaner

Trim, dedupe, validate and de-junk your email list — disposable domains, role accounts & typo fixes, all on your device.

⬆
Drop a .txt / .csv file
or click to browse — the column containing @ is picked automatically

🔒 Your list never leaves your browser — nothing is uploaded.

Suggested typo fixes
Paste a list (or load the sample) and hit Clean list to dedupe, validate and de-junk it.
0
Total found
0
Valid
0
Invalid
0
Duplicates removed
0
Disposable
0
Role accounts
0
Typos fixed

Honest limits: this tool runs local syntax & pattern checks only. True deliverability (MX records, SMTP mailbox checks) needs a mail server and is impossible to verify in-browser — so a "valid" address here is well-formed, not guaranteed to exist.

About Email List Cleaner

Email List Cleaner is a free, private seo & marketing tool that runs entirely in your web browser. Validate, dedupe & clean email lists locally — syntax checks, disposable-domain detection, CSV export. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for email list cleaner, email validator, verify emails, dedupe. Like every HeroTool by Digital Heroes, Email List Cleaner is 100% free with no limits.

How to use Email List Cleaner

  1. Open Email List Cleaner — it runs entirely in your browser, with no signup.
  2. Fill in the fields or choose the options you want.
  3. Adjust the options to match exactly what you need.
  4. Copy or download your result — it is free, and your data stays on your device.

Frequently asked questions

Is Email List Cleaner free?

Yes — Email List Cleaner is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Email List Cleaner runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Email List Cleaner do?

Validate, dedupe & clean email lists locally — syntax checks, disposable-domain detection, CSV export.

Related SEO & Marketing tools

Browse all SEO & Marketing tools →

🏷Meta Tag GeneratorGenerate SEO + Open Graph + Twitter tags with a live preview.{ }Schema Markup GeneratorBuild valid JSON-LD for rich results (FAQ, Article, Local…).🔍SERP Snippet PreviewPreview how your page looks in Google with pixel widths.◐Color & ContrastBuild palettes & check WCAG contrast for accessible color.🤖Robots.txt GeneratorCreate a robots.txt with allow/disallow rules and your sitemap.🗺Sitemap.xml GeneratorTurn a list of URLs into a valid XML sitemap.