Instead of creating them manually, which is very time-consuming, you can use a simple method to create multiple folders at once from Excel cell values.

Warning: All 3 sub-folders and all 42 notes within them will be deleted That would make it clearer that you’re about to do something you may not intend. Got any Notes tips of your own?

How to create labels, which are like folders, for the Gmail email platform and organize your inbox.

While the answer to that may be regular backups, this freeware utility lets you create copies of folders. How to mirror a folder in Windows 10 Mirror Folders is a free tool for Windows.