可以在没有后端的情况下从SendGrid & React.js发送电子邮件吗？

import React, { useState } from 'react';
import axios from 'axios';

const EmailForm = () => {
  const [email, setEmail] = useState('');
  const [message, setMessage] = useState('');

  const sendEmail = async () => {
    try {
      await axios.post('https://api.sendgrid.com/v3/mail/send', {
        personalizations: [
          {
            to: [{ email: email }],
            subject: 'Hello from SendGrid',
          },
        ],
        from: { email: 'your-email@example.com' },
        content: [{ type: 'text/plain', value: message }],
      }, {
        headers: {
          Authorization: 'Bearer YOUR_SENDGRID_API_KEY',
        },
      });

      alert('Email sent successfully!');
    } catch (error) {
      console.error('Failed to send email:', error);
    }
  };

  return (
    <div>
      <input type="email" value={email} onChange={(e) => setEmail(e.target.value)} />
      <textarea value={message} onChange={(e) => setMessage(e.target.value)} />
      <button onClick={sendEmail}>Send Email</button>
    </div>
  );
};

export default EmailForm;