OTP_VERIFY

Description

A Module that allows nodejs to send and verify otp through user emails. This module serves for usecases like signup email verification, User identification, Payment Confirmations. The otp sent is a random 5 digit number. The user receives the otp through email like shown in the image below.

Functions

• setupSenderEmail()
• sendOTP()

Function Description

1. setupSenderEmail(options)

This function is used to setup email that is used to send otp through mail, i.e, sender email. An options object is passed as argument to the function. Key-Value pairs that can be sent in options are

Key	Description
service	Email service provider
user	Email id
pass	Password

setupSenderEmail() function

otp_verify.setupSenderEmail({
  service: "gmail",
  user: "[e-mail]",
  //for gmail, create an app password and use it
  pass: "app_password",
});

2. sendOTP(options, callback_function)

This function is used to send otp through emails. Callback function is called at the end of the function. Key-Value pairs that can be sent in options are

Key	Description
to	Email id of receiver
message	Message to be sent along with the otp (Optional)
subject	Subject of the email (Optional)

sendOTP() function

otp_verify.sendOTP(
  {
    to: "[e-mail]",
    message: "Enter the below OTP for email validation",
    subject: "Email Verification",
  },
  (err, otp) => {
    if (err) console.log(err);
    else console.log("Email sent", otp);
  }
);

Usage

Example code to send otp through email using Node.js.

const otp_verify = require("otp-verify");

otp_verify.setupSenderEmail({
  service: "gmail",
  user: "[e-mail]",
  //for gmail, create an app password and use it
  pass: "app_password",
});

otp_verify.sendOTP(
  {
    to: "[e-mail]",
    message: "Enter the below OTP for email validation",
    subject: "Email Verification",
  },
  (err, otp) => {
    if (err) console.log(err);
    else console.log("Email sent", otp);
  }
);

Issues

Gmail

When using gmail, we need to give app password in the setupSenderEmail() function. If you find difficulty in creating an app password, follow these steps

• Go to your Google account at https://myaccount.google.com/
• Go to Security
• In "Signing in to Google" section choose 2-Step Verification - here you have to verify yourself, in my case it was with phone number and a confirmation code send as text message. After that you will be able to enabled 2-Step Verification
• Back to Security in "Signing in to Google" section choose App passwords
• From the Select app drop down choose Other (Custom name) and put a name e.g. nodemailer
• A modal dialog will appear with the password. Get that password and use it in your code.

Read more about it here

Hotmail/Outlook

If the mail is not being sent, once check the inbox for any confirmations to be done.