Feature: Conversation creation email notifications (#576)

* Clean up the mailers

* Disable assignment mailer if setting is turned off

* Email notifications on conversation create

* Specs

app/mailers/agent_notifications/conversation_notifications_mailer.rb

@@ -0,0 +1,21 @@
+class AgentNotifications::ConversationNotificationsMailer < ApplicationMailer
+  default from: ENV.fetch('MAILER_SENDER_EMAIL', 'accounts@chatwoot.com')
+  layout 'mailer'
+
+  def conversation_created(conversation, agent)
+    return unless smtp_config_set_or_development?
+
+    @agent = agent
+    @conversation = conversation
+    subject = "#{@agent.name}, A new conversation [ID - #{@conversation.display_id}] has been created in #{@conversation.inbox&.name}."
+    mail(to: @agent.email, subject: subject)
+  end
+
+  def conversation_assigned(conversation, agent)
+    return unless smtp_config_set_or_development?
+
+    @agent = agent
+    @conversation = conversation
+    mail(to: @agent.email, subject: "#{@agent.name}, A new conversation [ID - #{@conversation.display_id}] has been assigned to you.")
+  end
+end