Free Email Validator Online — Check Deliverability & Domain Health
Before you send a campaign, some addresses on your list are typos, dead, or spam traps — and mailing them hurts your deliverability so even your good emails start landing in spam. Validating checks each address's format, domain health, and likely deliverability before you hit send, protecting your sender reputation. Verify one address or a whole list here; teams can automate it through the API.
Frequently Asked Questions
- Does email validation send an actual email?
- No — validation checks DNS records and pattern analysis only. It does not send a test email or confirm the inbox exists.
- Can this validate bulk email lists?
- The tool validates one address at a time. For bulk validation, consider a dedicated email verification service.
- What is a catch-all domain?
- A catch-all domain accepts email for any address, regardless of whether the mailbox exists. These are flagged as they can inflate apparent deliverability.