Function validEmail

src/components/Letter.jsx:10–15

(email)

  const [error, seterror] = useState("");

  function validEmail(email) {
    let re =
      /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    if (re.test(email)) return true;
    else return false;
  }

  const handleSubmit = (e) => {
    e.preventDefault();