1 files changed, 26 insertions, 0 deletions
diff --git a/lib/action_mailbox/callbacks.rb b/lib/action_mailbox/callbacks.rb
new file mode 100644
index 0000000000..33caaafd2a
--- /dev/null
+++ b/lib/action_mailbox/callbacks.rb
@@ -0,0 +1,26 @@
+require "active_support/callbacks"
+
+module ActionMailbox
+  module Callbacks
+    extend  ActiveSupport::Concern
+    include ActiveSupport::Callbacks
+
+    included do
+      define_callbacks :process
+    end
+
+    module ClassMethods
+      def before_processing(*methods, &block)
+        set_callback(:process, :before, *methods, &block)
+      end
+
+      def after_processing(*methods, &block)
+        set_callback(:process, :after, *methods, &block)
+      end
+
+      def around_processing(*methods, &block)
+        set_callback(:process, :around, *methods, &block)
+      end
+    end
+  end
+end