Just for sending plain old spam because they know these notifications bypass a lot of the filtering. Removed the names in case they've come from hacked accounts.

Google Drive

> Random Name (randomcharactershere@gmail.com) has invited you to view the following document: Private__file-Nyela-(random characters)

> If you don't want to receive files from this person, block the sender from Drive

The painful part is the last bit, you can only block that single sender, you can't turn off all notifications.

Google Docs

> Random Name (randomcharactershere@gmail.com) mentioned you in a comment in the following document Direct_message_with_Salma

> 1 comment

> Random Name • 4:58 PM, Jul 11 Contact Helen and rate her request to date here https://morerandomcharacters.example/evenmoremorerandomchara...

Google Docs has the same problem, you follow the link to turn it off and you end up at:

> Notification settings of myemailaddress@gmail.com for Direct_message_with_Salma

So you can only ever disable notifications from that single document.