proper email id validation regex for laravel validator code example

Example 1: email validation in laravel

'email' => 'required|email|unique:users,email',
//@sujay

Example 2: email validation in laravel

$validator = Validator::make($request->all(), []);

 $validator->sometimes('email', 'unique:users,email', function ($input) {
            return $input->email !== Auth::user()->email;
        });
//@sujay