An electronic mail identifier may include a dash as a valid character. For example, `john-doe@example.com` is a permissible formation, where “john-doe” represents the local part before the “@” symbol. This convention allows for greater flexibility in creating memorable or descriptive identifiers.
The allowance of this character in email identifiers broadens the scope for personalized addresses, particularly useful in professional settings where separation of first and last names is desired. Historically, email naming conventions were more restrictive; the inclusion of this character reflects a gradual relaxation to accommodate user preferences and clarity. This flexibility assists in maintaining an organized digital communication system.
