Are there any characters that cannot be registered in the user ID?
Question
Are there any characters that cannot be registered in the user ID?
Answer
The following characters cannot be used before @.
[]^<>\()”@;:,*
The following characters cannot be used after @.
[]^<>\()”;:,*
The patterns of following user ID can be registered;
admin@example.com
admin.bar@example.com
The patterns of following user ID can not be registered;
admin.bar￥biz@example.com
admin@bar.biz@example.com
The maximum number of characters for the user ID is 80.
Last Updated : 10 Jun 2021
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