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The local-part of an email address can contain any of the following ASCII characters:
  • Uppercase and lowercase Latin letters A to Z and a to z
  • Digits 0 to 9
  • The following printable characters: !#$%&'*+-/=?^_`{|}~
The following guidelines apply to the local-part of a valid email address:
  • The dot (.) character is allowed but cannot be the first or last character and cannot appear consecutively.
  • Spaces are not allowed.
  • The length is not validated.