They called me frantic - they had a bunch of emails in their inbox for their POP3 mail that they were saving and now (as of this morning) they are gone (they said they had 'loads' of emails and now only 14.
The missing emails were as current as today and others were months old.
There's no filter applied (at least no 'filter applied' message at the bottom of the screen.
Yeah, they could have dragged a bunch into another folder. but there's no easy way to see files that were moved / deleted today / get things that were in the inbox back in there, right?
They don't have backups. Previous versions for their appdata/microsoft/outlook folder has only 1 previous version from this afternoon when I looked late this afternoon.