I have been using gmail for two decades but nearly never used the web app. So I had these “Important” IMAP folders (based on Google’s opinion) synced on all my machines filling up the disk with duplicates of the same thing in “All Mail”. Only noticed now after setting up aerc lately and now @thunderbird
Disabling these in IMAP in my three remaining google accounts will definitely save some space on all my devices. One day I will have zero google accounts but not today.