Add production config and credentials

config/environments/production.rb

@@ -59,6 +59,17 @@ Rails.application.configure do
 
   config.action_mailer.perform_caching = false
 
+  config.action_mailer.delivery_method = :smtp
+
+  config.action_mailer.smtp_settings = {
+    address: "mail.gandi.net",
+    port: "587",
+    user_name: Rails.application.credentials.smtp[:username],
+    password: Rails.application.credentials.smtp[:password]
+  }
+
+  config.action_mailer.default_url_options = { host: "accounts.kosmos.org", protocol: "https" }
+
   # Ignore bad email addresses and do not raise email delivery errors.
   # Set this to true and configure the email server for immediate delivery to raise delivery errors.
   # config.action_mailer.raise_delivery_errors = false