如何在nodejs中使用nodemailer进行批量数据发送? [英] how to use nodemailer in nodejs for bulk data sending?

问题描述

我在下面有nodemailer代码，它正常工作.我的问题是将单个数据发送到单个电子邮件.id_array有两个电子邮件，no_array有两个单独的数据，我如何将"1"发送到[e-mail]，将"2"发送到[e-mail]?

i have nodemailer code below, its fine and working.My problem is to send individual data to individual email. id_array have two emails and no_array have two individual data, How do i send "1" to [e-mail] and "2" to [e-mail]?

var id_array = ["[e-mail]","[e-mail]"];
var no_array = ["1","2"];


var mailer = require("nodemailer");

// Use Smtp Protocol to send Email
var smtpTransport = mailer.createTransport({
    service: "Gmail",
    auth: {
        user: "[e-mail]",
        pass: "mypassword"
    }
});

var mail = {
    from: "Sachin Murali <[e-mail]>",
    to: [id_array],
    subject: "Sachin's Test on new Node.js project",
    text: [no_array]
   // html: "<b>"\"[no_array]\""</b>"
}

smtpTransport.sendMail(mail, function(error, response){
    if(error){
        console.log(error);
    }else{
        console.log("Message sent: " + JSON.stringify(response));
    }

    smtpTransport.close();
  });

推荐答案

为循环中的每个接收者准备参数，并使用promise并行运行所有电子邮件

Prepare the parameters for each receiver in a loop and use a promise to run all emails in parallel

  var id_array = ["[e-mail]","[e-mail]"];
  var no_array = ["1","2"];

  var mailer = require("nodemailer");

    // Use Smtp Protocol to send Email
  var smtpTransport = mailer.createTransport({
    service: "Gmail",
    auth: {
        user: "[e-mail]",
        pass: "mypassword"
    }
 });

 let emailPromiseArray = [];

    //prepare the email for each receiver
    for(let i=0;i<id_array.length;i++){
         emailPromiseArray.push(
             sendMail({
                  from: "Sachin Murali <[e-mail]>",
                  to: id_array[i],
                  subject: "Sachin's Test on new Node.js project",
                  text:no_array[i]
             })
         )
    }

    //run the promise
    Promise.all(emailPromiseArray).then((result)=>{
        console.log('all mail completed');
    }).catch((error)=>{
        console.log(error);
    })

    function sendMail(mail){

        return new Promise((resolve,reject)=>{
            smtpTransport.sendMail(mail, function(error, response){
        if(error){
            console.log(error);
            reject(error);
        }else{
            console.log("Message sent: " + JSON.stringify(response));
            resolve(response);
        }

        smtpTransport.close();
            });
        })
    }

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