When adding usernames, group names, and group descriptions to Google Workspace or another Google Cloud account, use the following guidelines.
Usernames can contain letters (a-z), numbers (0-9), dashes (-), underscores (_), apostrophes ('), and periods (.).
Letters in usernames must be lowercase. If you enter uppercase letters when creating a username, they are converted to lowercase letters.
- Usernames can't contain more than one period (.) in a row, accents, accented letters, ampersands (&), equal signs (=), brackets (<,>), plus signs (+), commas (,), or exclamation points (!).
- Periods (.) are not ignored in usernames the way they are in gmail.com accounts. If you create a user account called username, this user will not be able to receive messages addressed to user.name, or us.er.na.me, or any other combination of periods. To let a user receive mail with these variations, create an email alias for them.
- Usernames can begin or end with non-alphanumeric characters except periods (.), with a maximum of 64 characters.
- Because abuse and postmaster are reserved words, you can't use them as usernames or aliases. Learn more about reserved words.
- First and last names support unicode/UTF-8 characters, with a maximum of 60 characters.
Group names and descriptions
- Names can be up to 73 characters long.
- Use names that make it easy to identify the group’s purpose.
- Groups created in the Admin console: Names and descriptions can’t contain equal signs (=), brackets (<>), or ampersands (&).