Free Email List Cleaner

What this checks

• Format — validates each address against a strict email pattern.
• Disposable domains — flags 60+ known throwaway providers like Mailinator, Guerrilla Mail, and YOPmail.
• Major providers — recognizes Gmail, Outlook, Yahoo, and iCloud as trusted, format-verified addresses.
• Duplicates — removes case-insensitive duplicates, keeping the first occurrence.

Download a cleaned CSV of valid emails, or a full report with a status and reason for every address. Want live SMTP mailbox verification? See our plans.

Cleaning your list improves deliverability — read our email deliverability guide and why emails go to spam.