Add user mailer

app/mailers/user_mailer.rb

@@ -0,0 +1,6 @@
+class UserMailer < ApplicationMailer
+  def welcome_email(user)
+    @user = user
+    mail(to: @user.email, subject: 'Welcome to Anity Jobs')
+  end
+end

app/views/user_mailer/welcome_email.html.erb

@@ -0,0 +1,6 @@
+<h1>Welcome to Anity Jobs, <%= @user.email %></h1>
+  <p>
+    You have successfully signed up to example.com,
+    your username is: <%= @user.email %>.<br>
+  </p>
+<p>Thanks for joining and have a great day!</p>

app/views/user_mailer/welcome_email.text.erb

@@ -0,0 +1,5 @@
+Welcome to Anity jobs, <%= @user.email %>
+===============================================
+You have successfully signed up to Anity jobs,
+your username is: <%= @user.email %>.
+Thanks for joining and have a great day!

config/environments/development.rb

@@ -39,7 +39,21 @@
   config.active_storage.service = :local
 
   # Don't care if the mailer can't send.
-  config.action_mailer.raise_delivery_errors = false
+
+  config.action_mailer.delivery_method = :smtp
+  config.action_mailer.perform_deliveries = true
+  config.action_mailer.raise_delivery_errors = true
+  config.action_mailer.default_options = {from: '[email protected]'}
+
+  config.action_mailer.smtp_settings = {
+    address:              'smtp.gmail.com',
+    port:                 587,
+    domain:               'example.com',
+    user_name:            '<username>',
+    password:             '<password>',
+    authentication:       'plain',
+    enable_starttls_auto: true
+  }
 
   config.action_mailer.perform_caching = false
 

spec/mailers/previews/user_mailer_preview.rb

@@ -0,0 +1,4 @@
+# Preview all emails at http://localhost:3000/rails/mailers/user_mailer
+class UserMailerPreview < ActionMailer::Preview
+
+end

spec/mailers/user_mailer_spec.rb

@@ -0,0 +1,5 @@
+require "rails_helper"
+
+RSpec.describe UserMailer, type: :mailer do
+  pending "add some examples to (or delete) #{__FILE__}"
+end