Folder tree as navigation pivot + Refresh icon


I’d like to know if there is a way to configure K9 mail in a way that the folder tree / structure of a specific account is the navigation pin point. This is:

After K9 launching, it goes by default to a specifc account, displaying its folder structure (see example enclosed)

At this point, I choose, for instance “Junk Email”, do whatever I need and, when I go back, I’d like to return to the folder structure, instead being redirected to Inbox.

Another think I’d like to request is an Update / Refresh to perform the same action that now is only achievable by swiping down.

Thank you in advance.