Normalize emails (Gmail dots/plus) and find duplicates
Normalize email addresses (strip +tags, remove Gmail dots, lowercase) and find duplicates in a list. Everything runs in your browser.
Checking whether an address can actually receive mail is a different job — for syntax validation and a live MX-record deliverability check, use the Email Checker.
| Input | Normalized | Status |
|---|---|---|
| John.Doe+news@Gmail.com | johndoe@gmail.com | valid |
| johndoe@gmail.com | johndoe@gmail.com | valid |
| A.B@outlook.com | a.b@outlook.com | valid |
Strips +tags for all providers; removes dots and canonicalises the domain for Gmail. Everything runs in your browser.
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