How to Use the Email List Cleaner
Paste or upload the list, choose the filters, and the cleaner returns the kept addresses with a reason for every removal.
- Paste your addresses, one per line, or upload a TXT, CSV or TSV file.
- Choose whether to lower-case addresses and remove role or disposable addresses.
- Select Clean list and wait for the progress message on large lists.
- Copy or download the clean list, or export every row with its reason as CSV.
What the Email List Cleaner Removes
The email list cleaner removes duplicates and invalid syntax, and optionally role addresses and disposable domains.
Bulk Email List Cleaning
The cleaner reads up to 10,000 entries per run and removes spaces, display names and mailto: prefixes. Each address is checked against RFC 5322 syntax and the SMTP length limits, and entries that fail are removed with the reason shown. Duplicates are found after normalizing, so Ana@Example.com and ana@example.com count as one address.
Email List Clean Up
Two optional filters handle addresses that are valid but often unwanted. Role addresses such as info@, sales@ and noreply@ reach a team or a system rather than a person. Disposable domains are matched, parent domains included, against a public list of nearly 10,000 temporary inbox providers.
Email List Cleaning Best Practices
Clean the list before every large send and after importing addresses from forms or events. The per-domain counts show typos such as a misspelled provider domain and reveal how much of the list depends on one company. Clean syntax is only the first step, so check mail routing for the kept addresses before sending.
Frequently Asked Questions
What Is Email List Cleaning?
Email list cleaning removes addresses that cannot or should not receive your mail, such as duplicates, typos and temporary inboxes. A cleaner list bounces less, which protects the sender reputation of your domain.
How Do You Clean an Email List for Free?
Paste the list into this cleaner or upload the CSV export from your mail platform, then select Clean list. It runs in your browser without an account, and you can download the result as a text file or CSV.
How Do You Clean an Email List in Excel?
Export the sheet as CSV with a column named Email and upload it here; the cleaner reads that column and ignores the others. Export the result as CSV and open it in Excel to filter the kept rows.
Are Email Cleaners Safe?
A cleaner that uploads your list shares your contacts with another company. This cleaner processes the list in your browser and only downloads the public disposable-domain list from this site, so the addresses never leave your device.
Related Email Tools
Continue with the guide Why Are My Emails Going to Spam?. Investigate configuration, content and reputation.