I'm looking for an email app that will allow me to have my email sub folders in a tree view.

[AC Question]

.My stock email app on my LG g5 will not sync emails older than 60 days other wise it would be perfect. My old Note 3 worked perfectly. Everything I have tried Aquamail,mymail,Gmail,etc etc do not do this. They list all the subfolders and sub sub folders in one column.
thanks so much