It would be great if vFire had the capability to detect a email flood (aka a bunch of emails from the same address within a short time space) we have had issues with emailing to external ticketing systems where the two systems don't recognize the subject string and begin spamming each other with ticket responses.
This would ensure that mass emails are not clogging up the support system when this occurs.
At the moment we use the IPK Workflow rules to respond to the customer which allows us to make exceptions, however the default auto reply does not have this flexibility and would be better if you could set a global option to detect email flood and stop it at the connector.