$ sudo npm install nodemailer
$ sudo npm install -g nodemailer

If want to update the nodemailer package execute the command as below,

$ sudo npm update nodemailer

Update package globally,

$ npm install -g nodemailer

Git clone:

$ sudo  git clone https://github.com/rektide/nodemailer.git

$ sudo  npm install -g ./nodemailer

nodemailer@4.4.0 /usr/lib/node_modules/nodemailer

How to remove nodemailer package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall nodemailer

Basic Information of nodemailer NPM Package: