Google Drive folder monitor with email alert
This code suits if you want to be emailed if a file is added to a folder from outside your domain. This can be easily edited to alert for filed added inside your domain also. Take a look at line 75.
Set the global variables to suit your own domain.
To monitor a folder go to 'file > project properties > project properties' and add row to include the folder id as property and empty array as value.
I hope you find this useful.