[Feature] Email collect message hooks (#331)

- Add email collect hook on creating conversation
- Merge contact if it already exist

config/environments/test.rb

@@ -29,7 +29,7 @@ Rails.application.configure do
   config.cache_store = :null_store
 
   # Raise exceptions instead of rendering exception templates.
-  config.action_dispatch.show_exceptions = false
+  config.action_dispatch.show_exceptions = true
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false