Getting notified when my iPhone is found at a different email address?
You can setup your gmail account as default iCloud account.

To do this : 


Go to settings
Mail Contacts, Calenders option
Add new Email Account
Choose iCloud Account
Choose Get a Free Apple ID
When it asks for Email provide your Gmail Address
It will then pair your email with iCloud account so that you can use it as primary iCloud account
Once setup is done go to iCloud in Settings and change the account from iCloud me address to your newly setup Gmail iCloud Account


Hope it helps :)