#206 Action Mailer in Rails 3

I wonder how many people actually know about the mail interceptor feature available in Rails3 via the mail gem

ActionMailer::Base.smtp_settings = { :address => "smtp.gmail.com", :port => 587, :domain => "railscasts.com", :user_name => "railscasts", :password => "secret", :authentication => "plain", :enable_starttls_auto => true } ActionMailer::Base.default_url_options[:host] = "localhost:3000" Mail.register_interceptor(DevelopmentMailInterceptor) if Rails.env.development?

Full article: http://railscasts.com/episodes/206-action-mailer-in-rails-3