diff --git a/lib/templates/initializer.rb b/lib/templates/initializer.rb
new file mode 100644
index 0000000..9abde06
--- /dev/null
+++ b/lib/templates/initializer.rb
@@ -0,0 +1,36 @@
+# This monkey patch allows you to customize the message format that you publish to your broker. 
+# By default, Outboxable publishes a CloudEvent message to your broker.
+module Outboxable
+  module RabbitMq
+    class Publisher
+      # Override this method to customize the message format that you publish to your broker
+      # DO NOT CHANGE THE METHOD SIGNATURE
+      def to_envelope(resource:)
+        {
+          id: resource.id,
+          source: 'http://localhost:3000',
+          specversion: '1.0',
+          type: resource.routing_key,
+          datacontenttype: 'application/json',
+          data: @resource.payload
+        }.to_json
+      end
+    end
+  end
+end
+
+Outboxable.configure do |config|
+  # Specify the ORM you are using. For now, only ActiveRecord is supported.
+  config.orm = :activerecord
+
+  # Specify the message broker you are using. For now, only RabbitMQ is supported.
+  config.message_broker = :rabbitmq
+
+  # RabbitMQ configurations
+  config.rabbitmq_host = ENV.fetch('RABBITMQ__HOST')
+  config.rabbitmq_port = ENV.fetch('RABBITMQ__PORT', 5672)
+  config.rabbitmq_user = ENV.fetch('RABBITMQ__USER')
+  config.rabbitmq_password = ENV.fetch('RABBITMQ__PASSWORD')
+  config.rabbitmq_vhost = ENV.fetch('RABBITMQ__VHOST')
+  config.rabbitmq_event_bus_exchange = ENV.fetch('EVENTBUS__EXCHANGE_NAME')
+end
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