Rails 4, how to correctly configure smtp settings (gmail)

Question

I am trying to create a contact form in Rails 4. I did some digging around here and was able to get most of the stuff to work. (followed @sethfri\'s work here Contact Form M

Answer 1

2020, Rails 6 updated answer:

  config.action_mailer.perform_deliveries = true
  config.action_mailer.raise_delivery_errors = true
  config.action_mailer.perform_caching = false
  config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {
    address: "smtp.gmail.com",
    port: 587,
    authentication: "plain",
    enable_starttls_auto: true,
    user_name: "blabla@gmail.com",
    password: "blabla", 
    domain: "smtp.gmail.com",
    openssl_verify_mode: "none",
  }