How Far Back Can Gmail Retrieve Messages if Served with Warrant

My question involves criminal law for the state of: ny

hi, if the police are granted access to a suspects email account, gmail specifically, how far back are emails still available on Gmail servers?
For instance, if you delete an email then empty the trashfolder, supposedly the messages are still on the gmail servers for some period of time, and even after that can they still be retrieved?
Anyone have any experience there?

Thanks!

How Far Back Can Gmail Retrieve Messages if Served with Warrant