README.md in rails-settings-cached-2.7.1 vs README.md in rails-settings-cached-2.8.0

@@ -281,9 +281,13 @@
   config.action_mailer.delivery_method = :smtp
   config.action_mailer.smtp_settings = Setting.mailer_options.deep_symbolize_keys
 end
 ```
 
+TIP: You also can follow this file to rewrite ActionMailer's `mail` method for configuration Mail options from Setting after Rails booted.
+
+https://github.com/ruby-china/homeland/blob/main/app/mailers/application_mailer.rb#L19
+
 ## Caching flow:
 
 ```
 Setting.host -> Check Cache -> Exist - Get value of key for cache -> Return
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