collector.rb Ruby on Rails 5.1.2 collector.rb actionmailer/lib/action_mailer/collector.rb on GitHub Last modified: 2017-07-12 08:38:24 -0700 Required Files abstract_controller/collector active_support/core_ext/hash/reverse_merge active_support/core_ext/array/extract_options Namespace MODULE ActionMailer CLASS ActionMailer::Collector