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Email Address Validator

Check the format of one address or a full list.

This checks how an address is written. It cannot tell whether the mailbox exists.

Clean a mailing list before you use it. Paste your addresses to catch mistakes in how they are written, remove duplicates, and spot domain typos.

Features

Bulk Checking
Paste a full list, one per line or separated by commas.
Typo Suggestions
Spots mistakes such as gmial.com and suggests a fix.
Private
Addresses are checked in your browser and never uploaded.

Use Cases: When This Tool Helps

  1. Clean a mailing list before a campaign

    Remove typos and invalid formats so fewer emails bounce.

  2. Catch domain typos

    Spot gmial.com, hotmial.com, and yaho.com mistakes in sign-up lists.

  3. Remove duplicates from contact lists

    Merge exports from several sources without emailing anyone twice.

  4. Check event registration data

    Validate attendee emails before sending tickets and reminders.

  5. Protect sender reputation

    Lower bounce rates help keep your emails out of spam folders.

  6. Validate CRM imports

    Check a CSV of leads before importing it into HubSpot, Mailchimp, or Salesforce.

How to Use

  1. Paste one or more addresses.
  2. Review the result and reason for each one.
  3. Copy the valid addresses.

FAQ

Does this confirm a mailbox exists?▾

No. It checks the format only. Confirming a mailbox requires contacting the mail server.

Are my addresses stored?▾

No. Nothing leaves your browser.

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