collapse

I am familiar with VBA, but most of my VBA experience is with Access. I would like to write VBA Code to collapse or expand all Task folder groups. This works with the tasks themselves using the native option under View - Expand/Collapse; however, it does not expand or collapse the sidebar groups...

I have hundreds of folders in my exchange server email account (at outlook.com). In PC Outlook, folders can be collapsed and expanded; in Android Outlook, I cannot see how to collapse folder. I'm getting the feeling it's not possible- is that correct?