[ENV] Mailjet delivery method

config/environments/production.rb

@@ -67,6 +67,20 @@ Rails.application.configure do
   # Set this to true and configure the email server for immediate delivery to raise delivery errors.
   # config.action_mailer.raise_delivery_errors = false
 
+  if ENV['MAILTRAP_ENABLED'] == 'enabled'
+    config.action_mailer.delivery_method = :smtp
+    config.action_mailer.smtp_settings = {
+      user_name: Rails.application.secrets.mailtrap[:username],
+      password: Rails.application.secrets.mailtrap[:password],
+      address: 'smtp.mailtrap.io',
+      domain: 'smtp.mailtrap.io',
+      port: '2525',
+      authentication: :cram_md5
+    }
+  else
+    config.action_mailer.delivery_method = :mailjet
+  end
+
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
   # the I18n.default_locale when a translation cannot be found).
   config.i18n.fallbacks = true