Email Validator
Checks if the provided value is a valid email address. The default matching for an email is
/^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$. It means any word symbol plus a ‘-’ or ‘.’followed by ‘@’ and then again the same word symbols. Both of those at lease once. Followed by between 2 and 4 word symbols
Default error message:
Value is not a valid email address.