Glad to see you enjoy the Smart E-mailer program and it is working well for you.
I created it so you can trigger e-mails from virtually any device configured in HG even virtual devices (not just security sensors).
With a little creativity I'm sure you can get your emails down two just one per event.
I've been playing with Wemo devices and the HG code for those devices using this emailer. Originally it was triggering every status update check but no longer so I suspect other device code may also need some tweaking to prevent false email alerts.
The custom recipient and message options allows you to send more personal emails or texts messages to different devices from different module "On" event trips.
I'm sure other Options may present themselves down the road for this but I currently have no plans for a version 3.