Rails - shortcut

rails g mailer UserMailer welcome

#app/mailers/application_mailer.rb

class ApplicationMailer < ActionMailer::Base
  defalt

end

class UserMailer < ApplicationMailer
  def welcome
  @greeting = "Hi"
  mail to: "to@example.org"
  end
end

# Create Server on Heroku
heroku create project-name --region=us

# Bind your local project to the new server
heroku git:remote -a project-name