Email send operation via Gmail

This tech article explains how to send an email using Mule 4 via Gmail integration.

1. Start by adding a Listener in Mule flow and configuring the Listener configuration
   
2. Provide a suitable method for a resource. 
3. Add an email connector in your working space and drag/send email activity to Mule Canvas.
   
4. Configure the email connector
   

   Username: This is the Gmail ID for which you want to configure SMTP details.

   Password: For this, you need to generate a Google token. Follow the steps below steps to generate a token: 

   1. Enable Gmail 2-step verification: https://www.google.com/landing/2step/
      
   2. Go to https://security.google.com/settings/security/apppasswords and try to generate an app password.
      
   3. Select Mail in the app list, then select your preferred device and generate a token.
      
   4. Paste the token generated in password.
      
5. On your Mule application, define an SMTP configuration.
   1. Go to the Advanced tab in configuration.
   2. In Properties, select edit inline and set value as follows: 

      Key: “mail.smtp.starttls.enable”

      Value: “True”

      
6. In mail activity, provide the following info:
   •   To address 
   •   From address
   •   Subject
   •   Body
   
7. Build and deploy the application.
8. Test the application — hit Listener with URL.
   
9. Check mail.
   

— By Ritendra Dhakciya