Email Normalizer
Reduce an email address to its canonical form (Gmail dots, plus-tags).
Normalised in your browser to help you spot duplicate sign-ups. Nothing is sent anywhere.
| Canonical form | — |
|---|---|
| Local part | — |
| Domain | — |
| Provider rules applied | — |
Frequently asked questions
What does normalizing an email address do?
It reduces an address to a canonical form by lowercasing it and, for providers that ignore them, stripping dots and plus-tag suffixes. This gives one consistent version of an address that may be written many ways.
Why are Gmail dots removed?
Gmail ignores dots in the local part, so john.smith and johnsmith deliver to the same inbox. Removing the dots reveals the single underlying address.
What is a plus-tag or plus-address?
A plus-tag is text added after a plus sign in the local part, like name+news, used to filter or label mail while still reaching the same inbox. Normalizing strips it to reveal the base address.
Is normalization safe for all email providers?
The dot and plus-tag rules apply mainly to Gmail and some others, so treat the canonical form as a best guess rather than a universal rule. Not every provider ignores dots.
Does this tool send the email address anywhere?
No. Normalization runs entirely in your browser, so the address you enter is never uploaded. It stays private on your device.
Why would I normalize emails?
Canonicalising addresses helps detect duplicate signups, spot the same user behind plus-tags, and deduplicate mailing lists. It gives a single comparable form.
Does normalizing change the domain part?
The domain is lowercased for consistency, but the dot and plus-tag stripping applies only to the local part before the at sign. The domain itself is otherwise left intact.