- Usernames may contain letters (a-z), numbers (0-9), dashes (-), underscores (_), apostrophes ('}, and periods (.), and may not contain an equal sign (=) or brackets (<,>). They can't contain more than one period in a row.
- Passwords may contain any combination of ASCII characters, but a minimum of 8 characters is required.
- First and last names support unicode/UTF-8 characters, with a maximum of 60 characters.
Dots (.) are recognized by Google Apps. This is not the same as Gmail. 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 dots that are used in Gmail. To allow your users to receive mail with dot variations, create a nickname.