如何在 sendgrid v3 node.js 中向多个收件人发送电子邮件

Question

有人可以帮我在 sendgrid v3 + node.js 中向多个收件人发送电子邮件吗？我注意到当我在to 字段中输入多个电子邮件地址时，只有第一个电子邮件地址会收到电子邮件。第一个之后的邮箱没有收到邮件：

send: function(email, callback) {
    var from_email = new helper.Email(email.from);
    var to_email = new helper.Email('emailUser1@gmail.com,emailUser2@gmail.com,emailUser3@gmail.com');
    var subject = email.subject;
    var content = email.content
    var mail = new helper.Mail(from_email, subject, to_email, content);
    var sg = require('sendgrid')(process.env.SENDGRID_API_KEY);
    var request = sg.emptyRequest({
      method: 'POST',
      path: '/v3/mail/send',
      body: mail.toJSON(),
    });

    sg.API(request, function(err, res) {
        console.log(res);
        if(err) {
            console.log('---error sending email:---');
            console.log(err);
            console.log(err.response.body);
            callback(500);
        } else {
            callback(200);
        }
    });

}

在上面的例子中，只有emailUser1@gmail.com 会收到邮件； emailUser2@gmail.com 和 emailUser3@gmail.com 没有收到电子邮件。

有人可以帮忙吗？

提前致谢！

Answer 1

node js 邮件助手允许您通过将to 属性指定为数组来发送给多个收件人。然后，根据您是否希望收件人能够看到彼此的地址，您发送消息的方式略有不同：

要允许查看，请使用sgMail.send(msg)：

const sgMail = require('@sendgrid/mail');
sgMail.setApiKey(process.env.SENDGRID_API_KEY);
const msg = {
  to: ['recipient1@example.org', 'recipient2@example.org'],
  from: 'sender@example.org',
  subject: 'Hello world',
  text: 'Hello plain world!',
  html: '<p>Hello HTML world!</p>',
};
sgMail.send(msg);

为防止看到，请使用sgMail.sendMultiple(msg) 或sgMail.send(msg, true)

const sgMail = require('@sendgrid/mail');
sgMail.setApiKey(process.env.SENDGRID_API_KEY);
const msg = {
  to: ['recipient1@example.org', 'recipient2@example.org'],
  from: 'sender@example.org',
  subject: 'Hello world',
  text: 'Hello plain world!',
  html: '<p>Hello HTML world!</p>',
};
sgMail.sendMultiple(msg);

https://github.com/sendgrid/sendgrid-nodejs/blob/b3b2092b7a150ffc5d68c9bb6575810a5827f69e/docs/use-cases/single-email-multiple-recipients.md

在幕后，助手使用Personalizations，您可以使用它进行更好的控制：

https://sendgrid.com/docs/for-developers/sending-email/personalizations/

Answer 2

const sgMail = require('@sendgrid/mail');
module.exports.send = function () {
    sgMail.setApiKey('XYZ');
    const msg = {
        to: ['abc@gmal.com', 'xyz@gmail.com'],
        cc: ['test@gmail.com', 'testing@gmail.com'],
        from: 'no-reply@mail.total.fr',
        subject: 'Subject of mail',
        html: 'html body',
        text: 'text message'
    };
    // console.log('message in mail :: ', msg);
    sgMail.send(msg).catch(console.error);
};

Answer 3

Sendgrid API V3

希望这会有所帮助。

https://www.npmjs.com/package/sendgrid-v3-node

示例： https://runkit.com/embed/ne9asbfj59fr

var sendgrid = require("sendgrid-v3-node")

const mailOptions = {
    sendgrid_key: 'SENDGRID_KEY',
    from_email: 'FROM_EMAIL',
    from_name: 'FROM_NAME',
    to: ['TO_EMAIL1', 'TO_EMAIL2']
};

mailOptions.subject = 'SUBJECT';
mailOptions.content = 'CONTENT';
sendgrid.send_via_sendgrid(mailOptions).then(response => {
    console.log(response);
});

Answer 4

您使用的是 SendGrid 的 Helper Library 吗？你会想要利用Personalizations。

如果您希望收件人互相看到，您应该在单个个性化对象中命名并填充每个收件人。如果您不希望他们看到彼此，并且希望他们每个人都能清楚地收到消息，那么您需要为每个不同的收件人组创建一个新的 Personalization 对象。

Answer 5

{
  "from": "sender@yourdomain.com",
  "template_id": "YOUR TEMPLATE ID",
  "personalizations": [
    {
      "to": [
        {
          "email": "john@example.com"
        }
      ],
      "send_at": 1600188812
    },
    {
      "to": [
        {
          "email": "jane@example.com"
        }
      ],
      "send_at": 1600275471
    }
  ]
}