Trims, lowercases the domain and collapses Gmail dots/plus tags.
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About this tool
Normalise an email address to a canonical form: lowercase the domain, strip a +tag from the local part, and remove dots for providers where they are ignored. Useful for deduplicating a mailing list.Questions
- Is removing dots always safe?
- No. This implementation removes dots only for
gmail.comandgooglemail.com, but removes a+suffix for all domains. That second rule may also merge different addresses at some providers. Keep the original address; do not use normalized text as proof two people are the same.