Normalize email addresses — lowercase, remove Gmail dots, strip +aliases, and trim whitespace.
Frequently Asked Questions
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.
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.
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.