I am using nodemailer and I need to send email to all the users in a array?

Question

I am using nodejs with nodemailer for sending emails to users.

I have a list of users like this :-

[
  {
    name: "John Doe",
    email: "john@something.com"
  }, 
  { 
    name: "Jane Doe",
    email: "jane@something.com"
  }
  ...and more.
]

How can I send email to all the users in array using nodemailer.

See my code -

users.map(user => {
          const mailOptions = {
              from: '*****@gmail.com',
              to: user.email,
              subject: subject, // Any subject
              text: message // Any message
          }

          transporter.sendMail(mailOptions, (err, info) => {
              if (err) {
                  console.log(err)
              } else {
                  console.log(info)   
              }
          })
   })

Is this a correct way of doing this ?

Thanks in advance !

This information is not adequate to understand what exactly do you want... — DecPK, Jun 04 '21 at 04:59
Hey! @decpk, I want to send a email to all the users in a array. — The Plier, Jun 04 '21 at 05:05
Check this link. https://stackoverflow.com/questions/64412815/sending-multiple-emails-at-once-with-nodemailer — Yonghoon Lee, Jun 04 '21 at 05:07

score 0 · Answer 1 · answered Jun 04 '21 at 05:10

0

Convert the array of emails to a comma separated string

const recipients = users.map(user=>user.email).join(',');
// 'john@something.com','jane@something.com'

Now you have all the recipients. Next use the nodemailer example to send emails to all the recipient at once

answered Jun 04 '21 at 05:10

Suraj Sharma

777
6
10

What is the max. number of people I can send email with this method ? – The Plier Jun 04 '21 at 05:49
I'm not sure. I think it depends on the email server you're using – Suraj Sharma Jun 04 '21 at 06:12

score 0 · Accepted Answer · answered Jun 04 '21 at 05:30

Your code will work. But if you want to send the same email to many recipients, there is an easier way to do this.

As you can see in the nodemailer documentation, the field to is a comma-separated list or an array of recipients email addresses that will appear on the To: field. So something like this will do the job

const userEmails = users.map(item => item.email); // array of user email
const mailOptions = { // send the same email to many users
    from: '*****@gmail.com',
    to: userEmails, 
    subject: subject, // Any subject
    text: message // Any message
}

transporter.sendMail(mailOptions, (err, info) => {
   if (err) {
      console.log(err)
   } else {
      console.log(info)   
   }
})

I am using nodemailer and I need to send email to all the users in a array?

2 Answers2