What is node.js? Node.js is a server-side platform built-in JavaScript framework The steps to be followed : Step 1: Install node.js Step 2: Install npm (node package manager) Step 3: Install node mailer by running : “ npm install nodemailer “ Step 4: Create a file called “package.json” in your project folder and write the following code : Step 5: Run “ npm install “ Step 6: Create a “Server.js” Step 7: Create a form on index.html page Step 8: Write js code form Submit button, this code will check the validation before sending mail. Include this file on index.html by using : “ http://js/node-mailer-contact.js “ index.html form (view) : Step 9 : Create a method for SMTP ( Simple Mail Transfer Protocol ) in “Service.js” file through which email will be send: Step 10: Create a method for sending email in “Server.js” file: Step 11: Start the node js server on the terminal by running : “ node Server.js “ It will look like : Af...