How to Clean an Email List Locally with a Free Open-Source Node CLI

Описание и применение

Инструмент email‑list‑cleaner позволяет локально очистить список адресов, проверяя синтаксис, MX‑записи, наличие бесплатных и ролевых аккаунтов, а также исправляя опечатки, без отправки данных сторонним сервисам.

Задача

Bounces hurt sender reputation and many list verification services require uploading contacts to a third party.

Результат

The tool removes invalid syntax, checks MX records via DNS, flags disposable and role accounts, suggests typos, and deduplicates case‑insensitively, producing a cleaned CSV without sending data outside the machine.

Рабочий процесс

• Run npx github:5012763083a-oss/email-list-cleaner contacts.csv -o cleaned.csv
• Optionally specify --column to target a specific CSV column
• Use --no-mx for fully offline operation
• Use --no-dedupe to keep duplicates
• Open cleaned.csv in a spreadsheet
• Filter by status column: drop 'invalid', review 'risky', fix 'didYouMean' suggestions
• Export final list for use

Доказательства

Bounces hurt sender reputation, and many "list verification" services require uploading your contacts to a third party.

Источник

Nothing in your list leaves your machine. The only network traffic is DNS lookups for the domains.

Источник

The free edition processes the first 500 rows per file.

Источник