nodemailer-otp

Nodemailer-otp is a simple Node.js package that allows developers to easily generate OTPs (One Time Passwords) and send email notifications using Nodemailer. This package provides easy integration into your Node.js projects and supports customizable OTP lengths.

Features

• Generate OTPs for use in your application
• Send OTPs and custom messages via email using Nodemailer
• Simple and customizable integration with your Node.js project
• Easy setup and usage

Installation

To get started with nodemon-helper, follow these steps:

npm install nodemailer-otp 

Create a .env file in your project's root directory:

[email protected]
EMAIL_PASS=your-email-access-key

Setup Instructions

Email Provider Configuration

1. Gmail Setup:

   • Enable "Less Secure Apps" in your Gmail account settings, or
   • Generate an App-Specific Password if using 2-factor authentication
   • Use the app password in your .env file

2. Dependencies:

   npm install nodemailer

Usage

Basic Setup

const NodemailerHelper = require('nodemailer-otp');
require('dotenv').config();

// Initialize the helper
const helper = new NodemailerHelper(process.env.EMAIL_USER, process.env.EMAIL_PASS);

For (ESM) Syntax

import NodemailerHelper from 'nodemailer-otp';
import dotenv from 'dotenv';

// Load environment variables from .env file
dotenv.config();

// Initialize the helper
const helper = new NodemailerHelper(process.env.EMAIL_USER, process.env.EMAIL_PASS);

Generate OTP

// Generate a 6-digit OTP
const otp = helper.generateOtp(6);
console.log(`Generated OTP: ${otp}`);

Send OTP via Email

helper.sendEmail('[email protected]','subject','your message here!', otp)
  .then((response ) => {
    console.log(response );
  })
  .catch((err) => {
    console.error(err);
  });

API Reference

NodemailerHelper(email, emailAccessKey)

Constructor for initializing the helper with your email credentials.

• email: Your email address
• emailAccessKey: Email provider access key or app-specific password

generateOtp(length)

Generates an OTP.

• length: Number (4) //you can generate any length of otp.
• Returns: String containing the generated OTP

sendOtp(recipientEmail, otp)

Sends OTP via email.

• recipientEmail: Recipient's email address
• otp: OTP to send
• Returns: Promise

Troubleshooting

Gmail Issues

• Verify "Less Secure Apps" is enabled or use App-Specific Password
• Confirm email credentials in .env file are correct

OTP Generation Issues

• Check console logs for generated OTP is working

Email Sending Issues

• Review error logs
• Verify email configuration in .env
• Check email service status and account restrictions

Contributing

We welcome contributions! Feel free to:

1. Fork the repository
2. Create a feature branch
3. Submit a pull request

License

This project is licensed under the MIT License - see the LICENSE file for details.