How to expand/collapse folders in iOS Mail?
I just moved an IMAP account over to my iPhone. This IMAP account is organized with dozens and possibly hundreds of folders and subfolders. On the Macintosh, Mail.app does a great job of allowing me to expand and contract folders to view their subfolders. On iOS I can't find any way to do this. All the folders and subfolders appear to be permanently expanded. Surely that's not the case! This is very basic functionality and the iOS mail app has been around for years. Can anyone tell me how to do this?