The existing options are great, however, there is a major flaw in that watchers added are not notified of issue creation. We use Autowatch Rules for issue types that are created from email automatically generated by our various platform and system alerts, and have the same resulting problem.
This was a feature request, but now we have Autowatch Rules or other plugins as an option, or can add watchers at issue creation through the Cc field. That issue is solved for many scenarios, thus reducing the urgency of the original request. What is not working is a notification that should go to the watchers surrounding an issue creation notification.
The former is a feature request, and the latter is the failure of a feature (or combination of features) to operate as expected. Even the information provided on the Marketplace about Autowatch suggests that users are added as watchers, and issue creation notifications go out to those watchers. While I understand that this is in queue for future development, it needs to be escalated.