I struggled to get this working and finally did. Here is the configuration.yml I used for Amazon AWS Simple Email Service (SES).

production:
  email_delivery:
    delivery_method: :smtp
    smtp_settings:
      enable_starttls_auto: true
      address: email-smtp.us-east-1.amazonaws.com #Yours might be different
      port: 587
      domain: domain.com #This needs to be an verifed domain or the "Emission email address" needs to be a verified sender
      authentication: :login
      user_name: 6HA9QD6M6YA2WF5EZYKX #Put your user here. This not my real user
      password: KQHMGDS/4J9L9KZIIW63GUJ1SR31 #Put your password here. This is not my real password

rails_cache_store: :memcache