Email setup for google apps

configuration.yml

production:
  email_delivery:
    delivery_method: :async_smtp
    smtp_settings:
       tls: true
       enable_starttls_auto: true 
       address: "smtp.gmail.com"
       port: '587'
       domain: "smtp.gmail.com"
       authentication: :plain
       user_name: "[email protected]"
       password: "password"