Email Normalizer & Validator
Reduce an email address or a whole list to one canonical mailbox: strip dots and +tags for Gmail/Googlemail, lowercase everyone, check validity, and remove duplicates in a single click.
Email addressesOne address per line
3Total
3Valid
0Invalid
1Duplicates
2Unique
Normalized addresses
- Valid
[email protected] - Valid
[email protected]Duplicate - Valid
[email protected]
How normalization works
Every address is lowercased. For Gmail and Googlemail addresses the dots in the local part are removed, any +tag suffix is dropped, and the domain is rewritten to gmail.com, so all aliases fold to the same mailbox. For other providers dots are preserved and a +tag is stripped only when you ask for it. Validation catches the mistakes people actually make (missing @, double @, spaces, a missing or malformed domain) rather than the full RFC 5322 grammar. No address is sent or transmitted anywhere.