Email Normalizer
Normalize email addresses — lowercase, remove Gmail dots, strip +aliases, and trim whitespace.
Frequently Asked Questions
What does email normalization do?
Email normalization standardizes email addresses by lowercasing, removing dots from Gmail local parts (since Gmail ignores dots), stripping +alias suffixes, and trimming whitespace. This helps identify duplicate accounts and clean up email lists.
Why remove dots from Gmail addresses?
Gmail ignores dots in the local part of an email address. So 'john.doe@gmail.com', 'johndoe@gmail.com', and 'j.o.h.n.d.o.e@gmail.com' all deliver to the same inbox. Removing dots helps identify these as the same address.
What is a +alias in an email?
Many email providers (Gmail, Outlook, etc.) support 'plus addressing' where you can append +anything to your local part (e.g., user+newsletter@gmail.com). The alias is ignored for delivery but useful for filtering. This tool strips aliases to find the base address.