Google provides quite comprehensive documentation about how to send files in Google Chat messages, but I have been unable to find any information about how such files affect the sender's Google Drive storage quota.
Of course, none of the files I've attached to chat messages (images or video clips pasted into the text box on Chat's desktop site) in my organization's Workspace account show up in Drive's quota viewer—but neither does my email, so it's clear that that tool doesn't show everything. But there's also no category for Chat in the details shown in the Google Workspace view for Drive storage (e.g. https://drive.google.com/u/1/settings/storage).
I'm a bit wary of continuing to send files in Chat without knowing their impact on my storage quota. Additional information—whether a direct answer or a pointer to documentation I haven't managed to find on my own—would be much appreciated!
Best Answer
When "sending a file" from Google Drive on Google Chat you are actually sending a link, so there isn't any impact on the sender's storage quota.