Support Start > Email > Setting Up An Email Program > Apple Mail > Dragging Folder Bug

The Apple Mail software program has a bug that sometimes prevents you from dragging a folder to move it inside another. After you drag a folder, it may simply “pop back” to its original location, like this:

The bug happens when you drag a folder “on top of” an already-open destination folder icon or name.

There are two ways to work around this problem. The first is to release the dragged folder below the opened destination folder, like this:

It can be a little tricky to release the pointer at the exact right location, though, so there’s a simpler second way: close the destination folder, then drag the source folder on top of the closed destination folder icon or name, like this:

The closed destination folder will automatically open by itself after you drag the new folder onto it.