Free Local Node CLI Cleans Email Lists Without Uploading Contacts
The author, who built and maintains the open-source MIT-licensed tool email-list-cleaner, describes a way to clean contact lists on your own machine to avoid sending data to third-party verification services. The Node.js command-line tool checks syntax, looks up mail servers via public DNS without contacting them, flags disposable and role-based addresses, suggests typo fixes, and removes duplicates. Results are appended as columns marking each address as valid, invalid, risky, or unknown. The free edition processes up to 500 rows per file, and a paid Pro version removes that cap and adds batch mode and a summary report.
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