.

config/environments/development.rb

@@ -76,7 +76,7 @@ Rails.application.configure do
   # Uncomment if you wish to allow Action Cable access from any origin.
   # config.action_cable.disable_request_forgery_protection = true
 
-  config.action_mailer.default_url_options = {host: 'localhost', port: 3000}
+  config.action_mailer.default_url_options = {host: 'dev.j4.pm'}
 
   config.action_mailer.smtp_settings = {
     address: ENV['MAILER_ADDRESS'],

config/environments/production.rb

@@ -117,4 +117,15 @@ Rails.application.configure do
   # config.active_record.database_selector = { delay: 2.seconds }
   # config.active_record.database_resolver = ActiveRecord::Middleware::DatabaseSelector::Resolver
   # config.active_record.database_resolver_context = ActiveRecord::Middleware::DatabaseSelector::Resolver::Session
+  config.action_mailer.default_url_options = {host: 'UNSET.j4.pm'}
+
+  config.action_mailer.smtp_settings = {
+    address: ENV['MAILER_ADDRESS'],
+    port: 587,
+    domain: ENV['MAILER_DOMAIN'],
+    user_name: ENV['MAILER_USERNAME'],
+    password: ENV['MAILER_PASSWORD'],
+    authentication: 'plain',
+    enable_starttls_auto: true,
+  }
 end

config/environments/test.rb

@@ -57,4 +57,15 @@ Rails.application.configure do
 
   # Annotate rendered view with file names.
   # config.action_view.annotate_rendered_view_with_filenames = true
+  config.action_mailer.default_url_options = {host: 'dev.j4.pm'}
+
+  config.action_mailer.smtp_settings = {
+    address: ENV['MAILER_ADDRESS'],
+    port: 587,
+    domain: ENV['MAILER_DOMAIN'],
+    user_name: ENV['MAILER_USERNAME'],
+    password: ENV['MAILER_PASSWORD'],
+    authentication: 'plain',
+    enable_starttls_auto: true,
+  }
 end