If you have an Android device and use the Tasker automation app, you can simply use IFTTT triggers to send WebHooks messages to the device and let Tasker handle the logic–which can be as complex as you like.
I’m using this approach to make sure I don’t leave my garage door open all night. I track the state of the door in Tasker through Sense triggers and then use the WU sunset trigger on IFTTT to initiate a notification if the door appears to still be open.
You just need the AutoRemote plugin for Tasker to handle messages.