Action Mailer is the Rails component that enables applications to send and receive emails. In Rails, emails are used by creating mailers that inherit from “ActionMailer::Base” in app/mailers. Those mailers have associated views that appear alongside controller views in app/views. Now we will build a rails application which will send an email to the user when a new user is created. Let’s create a new rails application. $ rails new sample_app $ cd sample_app $ rails generate scaffold user first_name:string last_name:string phone_number:string email:string $ rake db:migrate Action Mailer- Configuration: Following are the steps you have to follow to complete your configuration before proceeding with the actual work. We will just add following lines of code in config/environments/development.rb config.action_mailer.delivery_method = :smtp #It tells ActionMailer that you want to use the SMTP server. Generate a Mailer : We now have a basic application, let’s make ...