An attribute representing a standardized email address, following Narrative's prescribed normalization process. NQL exposes a function to make this easy: `NORMALIZE_EMAIL(field)`. This normalization removes periods and any content after the '+' sign for Gmail addresses, converts all characters to lowercase, and trims whitespace around the email. This ensures consistent formatting for email addresses for querying and data processing. For more information, see https://www.narrative.io/knowledge-base/how-to-guides/how-to-normalize-emails-prior-to-hashing.
This is the canonical input form for the hashed email attributes (74, 75, 76): hash the normalized email, never the raw one.