In this tutorial, we will learn how we can send email using sendgrid's API and node.js .

1. Node.js installed : You can download it here .
2. Sendgrid account : Follow the steps given below to create an account on sendgrid and send email using it.
3. Sendgrid NPM package

As per wikipedia :

SendGrid provides a cloud-based email delivery service that assists businesses with email delivery. The service manages various types of email including shipping notifications, friend requests, sign-up confirmations, and email newsletters. It also handles internet service provider (ISP) monitoring, domain keys, sender policy framework (SPF), and feedback loops. Additionally, the company provides link tracking, open rate reporting.It also allows companies to track email opens, unsubscribes, bounces, and spam reports.

• We are selecting try for free option for this tutorial as shown below :
  
  



• Now input the required details which includes :
  
  1. Username : This needs to be unique.
  2. Password : Enter a secure alphanumeric password here.
  3. Confirm password : Enter the password again to confirm it.
  4. Email : Enter a valid email address here which you want to link with your sendgrid account.
  
  
  



• Your account is created Now input details about you in order to proceed. We've marked the details we entered while creating this tutorial in the image given below :
  
  



• Congratulations! you have successfully created account on sendgrid. Now move to the guides section to create your first application. You can click on the guides provided in the help link given on the bottom right corner of dashboard as shown below or you can simply click here .
  
  



• Now click on the start link provided in front of " Integrate using our Web API or SMTP relay " as shown below :
  
  



• Now we need to choose the setup method. We are using Web API method for our tutorial which , as per sendgrid , is fastest and most flexible way to send email using languages like Node.js, Ruby, C#, and more.
  
  



• Choose node.js as the language you want to use as shown below :



• Now we need an API key. We can create an API by adding some random content as the name of the API key and clicking on the create API key button as shown below:



• Now you need to update development environment with SENDGRID_API_KEY by running the following commands in your shell :
  

  										
  echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
  echo "sendgrid.env" >> .gitignore
  source ./sendgrid.env
  										
  									

  
  The screenshot of the following is given here :
  
  



• Install the sendgrid NPM package with the following command :
  

  										
  npm install --save @sendgrid/mail
  										
  									

  
  
• Now copy the minimum code required to send an email as shown below :
  
  
  You can copy it from here in a email.js file :
  

  										
  //Name of the file : email.js
  // using SendGrid's v3 Node.js Library
  // https://github.com/sendgrid/sendgrid-nodejs
  const sgMail = require('@sendgrid/mail');
  sgMail.setApiKey(process.env.SENDGRID_API_KEY);
  const msg = {
    to: '[email protected]',					//receiver's email
    from: '[email protected]',			//sender's email
    subject: 'I think its working',				//Subject
    text: 'and finally  i can send email from sendgrid',		//content
    html: 'and easy to do anywhere, even with Node.js',			//HTML content
  };
  sgMail.send(msg);
  										
  									

  
  
  you can run it using the following command :
  

  										
  >node email.js
  										
  									

  
  
  And if it runs without any error you can click on the I've integrated the code above check box and click on verification button and sendgrid will check whether your mail came through or not.

We learned how we can send a mail using sendgrid.