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

说明与用途

email‑list‑cleaner CLI 通过验证语法、检查 MX 记录、标记一次性和角色账户并建议拼写错误修正，帮助用户在本地清理邮件列表，且不将数据发送至第三方服务。

问题

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

结果

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.

工作流

• 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

证据

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

来源

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

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The free edition processes the first 500 rows per file.

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