Hm, but if you marked them as "done" in inbox they should have been archived in gmail and not show as "unread" on the app icon as that only shows unread in inbo

Hm, but if you marked them as "done" in inbox they should have been archived in gmail and not show as "unread" on the app icon as that only shows unread in inbox? That's they way it works for me at least. I use inbox and gmail both as apps on my iPhone and in the browser. I've been archiving and marked e-mails as "done" without reading them for years and never had this problem.