Please enter a valid email

Brilliant Staff have emails like or, i.e. a single alphanumeric word (sometimes with underscores or periods) or name followed by the site address.

Kenji wants to build an app which only the brilliant staff could use. Which of the following regex would be the best for him to use?

  1. .*@brilliant\.org

  2. \w+@brilliant\.org

  3. \

  4. \w*@brilliant\.org

  5. .+@brilliant\.org


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