Ran the following command (located on another thread, thanks Ross!):gam csv User.csv gam user "~userEmail" modify messages query "to:~~userEmail~~ in:inbox" addlabel "ToMe" removelabel "INBOX" maxtomodify 1000000 doit
Worked like a charm. Mostly.
I completed some spot checks and can see that accounts still have some messages in their inbox––not many, just a random amount across the users, maybe 5-10 messages. I can't figure out what the reason is––perhaps the messages are marked important? Maybe the user has a split pane view?