企业级邮件发送平台选 SendGrid：API 集成与 ROI 提升方案

const sgMail = require('@sendgrid/mail');
sgMail.setApiKey(process.env.SENDGRID_API_KEY);
const msg = {
  to: 'user@example.com',
  from: 'sender@example.com',
  subject: 'Hello from SendGrid',
  text: 'This is a test email sent through SendGrid API.',
  html: 'This is a test email sent through SendGrid API.'
};
sgMail.send(msg);

require('dotenv').config();
const SENDGRID_API_KEY = process.env.SENDGRID_API_KEY;